Black Box MD1641A manual

CUSTOMER SUPPORT INFORMATION Order toll-free in the U.S.: Call 7877-877-BBOX (outside the U.S. call 724-746-5500 ) FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 Mailing address: Black Box Corporation , 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • Email: info@blackbox.com AUGUS[...]

Series II Intelligent Data/Fax Modems Model 336 (Product Code MD1641A) Model 336+ (Product Code MD1640A) User Guide 336 and 336+ Series II Modems[...]

2 SERIES II INTELLIGENT DA T A/F AX MODEMS DISCLAIMER This publication may not be reproduced, in whole or in part, without prior expressed written permission from the manufacturer . The manufacturer makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitn[...]

3 T able of Contents Contents Chapter 1 - Introduction and Description 1.1 Introduction............................................................................7 1.2 How T o Use This Manual ......................................................7 1.3 What is in Y our Modem Package? ......................................10 1.4 Modem Features .....[...]

4 SERIES II INTELLIGENT DA T A/F AX MODEMS 3.7 When to Disable Data Compression ..................................33 3.7.1 Disabling Error Correction ..........................................34 Chapter 4 - Manual Dial and A utomatic Answer 4.1 Introduction ........................................................................35 4.2 Dialing/On-Li[...]

5 T able of Contents 5.4.12 Immediate Action Commands ....................................85 5.4.13 Line Probe Commands ................................................90 Chapter 6 - S-Registers 6.1 Introduction..........................................................................92 6.2 Reading and Assigning S-Register V alues .................[...]

6 SERIES II INTELLIGENT DA T A/F AX MODEMS 8.8 Digital Loopback T est (Local/Manual) (Sync Mode) ......124 8.9 Digital Loopback T est (Remote/Auto.) (Sync Mode) ......125 Chapter 9 - DIP-Switch Settings 9.1 Introduction..........................................................................127 9.2 DIP-Switch Option Settings ......................[...]

7 CHAPTER 1: Introduction and Description 1. Introduction and Description 1.1 Introduction W elcome to the world of data communications. Y ou have acquired one of the finest intelligent desktop data/fax modems available today , a Series II Modem from Black Box. Y our Series II Modem provides data communication at 33,600-14,400 bps ( Enhanced V .34/[...]

8 SERIES II INTELLIGENT DA T A/F AX MODEMS Chapter 2 - Installation and Connection Chapter 2 covers the procedure for connecting the Series II Modem to your computer and to the phone line. Details are given, supported by illustrations on the Modem's back panel connections as a guide to install your Modem to the point of operation. Chapter 3 - [...]

9 CHAPTER 1: Introduction and Description Chapter 7 - Callback and Remote Configuration Chapter 7 documents instructions on how to operate the Series II Modem's Callback and Remote Configuration features; and the usage of LOGIN Passwords, Set-Up Passwords and Remote Escape Characters as network management tools. Chapter 8 - T esting Y our Mode[...]

10 SERIES II INTELLIGENT DA T A/F AX MODEMS 1.3 What is in Y our Modem Pac kage? Y our Series II Modem is made up of many components. Make sure you have them all before trying to operate your modem. Y our package should include: • The Series II Modem itself • AC Power T ransformer • (2) RJ-11 to RJ-11 telephone cords • This Owner’ s Manua[...]

11 CHAPTER 1: Introduction and Description Y our Series II Modem offers interactive automatic dialing, as well as Command Mode option configuration. Y ou may store up to ten command line/telephone numbers, of up to 60 characters each, in the modem’ s nonvolatile memory . The modem pulse or tone dials, and recognizes dial tones and busy signals fo[...]

12 SERIES II INTELLIGENT DA T A/F AX MODEMS 1.6 T echnical Specifications Y our Series II Modem data/fax modem meets the specifications listed below: Data Rates (modem) 33,600, 31,200, 28,800, 26,400, 24,000, 21,600, 19,200, 16,800, 14,400, 12,000, 9600, 7200, 4800, 2400, 1200, 0-300 bps Data Rates (fax) 14,400, 9600, 7200, 4800 bps Data Format Ser[...]

13 CHAPTER 1: Introduction and Description Mode of Operation Full duplex over both dial-up lines and 2-wire or (336+ [MD1640A] only) 4-wire leased lines; automatic or manual dialing, automatic or manual answer; and (336+ [MD1640A] only) automatic dial backup on separate lines in leased line operation Intelligent Features Fully “A T command” com[...]

14 SERIES II INTELLIGENT DA T A/F AX MODEMS Fax Carrier V .21CH2 (Half Duplex) Frequencies 1650Hz Mark, 1850Hz Space for T ransmit Originate 1650Hz Mark, 1850Hz Space for T ransmit Answer V .27 ter 1800Hz Originate/Answer V .29 QAM 1700Hz Originate/Answer V .17 TCM 1800Hz Originate/Answer Lease Line Restoral 336+ (MD1640A) only: When in dial backup[...]

15 CHAPTER 1: Introduction and Description Receiver Sensitivity -43 dBm under worst case conditions A GC Dynamic Rang e 43 dB Interface EIA RS-232C/ITU V .24 Connectors Both models: (1) DB25 female for RS232C, (1) RJ-11 female for phone hadset, (1) Power inlet; 336+ (MD1640A) model only: (1) RJ-11 female for dialup line, (1) RJ-11 female for 2- or [...]

16 SERIES II INTELLIGENT DA T A/F AX MODEMS 1.7 P ower Power is supplied through an AC power transformer terminated with a standard two-prong plug. The transformer supplies low voltage AC to the modem, and plugs into any conventional 115 volt AC, 60 Hz, two- prong power outlet. The power transformer supplied with the modem is the only one that shou[...]

17 CHAPTER 1: Introduction and Description 4) 28,800 bps (28.8). This LED behaves differently depending on your connection: • When the modem is connected at 33,600 bps , it blinks 5 times/sec.; • When the modem is connected at 31,200 bps , it blinks once/sec.; • When the modem is connected at 28,800 bps , it is solidly lit. Note: if the modem[...]

18 SERIES II INTELLIGENT DA T A/F AX MODEMS 13) F AX (FX). This LED is lit when the modem is connected in FAX mode. 14) 336+ (MD1640A) only: ERROR (ERR). When this LED is lit, either the leased line is down and the modem is in dial backup mode, or else the self-test has failed. 1.9 Controls on PC Boar d The Series II Modem is designed on a single p[...]

19 CHAPTER 2: Installation and Connection 2. Installation and Connection 2.1 Safety W arnings 1. Never install telephone wiring during a lightning storm. 2. Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations. 3. Never touch uninsulated telephone wires or terminals unless the telephone line has [...]

20 SERIES II INTELLIGENT DA T A/F AX MODEMS 2.2 Installation The installation of the Series II Modem consists of making the physical connections necessary to render the modem functional with your computer . This includes making the proper serial, phone line, and power connections. Refer to Figure 2-1 below for the Series II Modem 336 (MD1641A) or t[...]

21 CHAPTER 2: Installation and Connection wall jack or the leased-line wall jack or terminal (refer to Figure 2-1 below). For the 336+ (MD1640A) model, run a cord from the PSTN jack to the dialup wall jack if you’re connecting to a dialup line; run a cord from the LEASE jack to the 2- or 4-wire leased-line wall jack or terminal if you’re connec[...]

22 SERIES II INTELLIGENT DA T A/F AX MODEMS 2. Attach your Modem to your PC or terminal with an RS-232 (or V .24) cable. 3. Connect telephone set to phone jack (if desired). 4. Attach your Modem to the AC Power transformer and plug t he AC connector into a live AC outlet. 5. T urn on power by flipping the "ON/OFF" switch at the left rear [...]

23 CHAPTER 2: Installation and Connection Note: Appendix A lists some basic and specific troub leshooting actions to take if your Modem is not operational. 2.3 Is Y our Series II Modem Ready f or Use? As soon as you connected power to the modem, it per formed a diagnostic self-test. The speed indicators flashed in sequence for approximately four se[...]

24 SERIES II INTELLIGENT DA T A/F AX MODEMS 2.4 Operating Y our Series II Modem Y ou control your Series II Modem by issuing AT commands, setting S-Registers, and setting DIP-Switches. Y ou can easily change the settings of your DIP-Switches, as they are located on the right side of your Modem’ s chassis. Right now your Modem is set up for the mo[...]

25 CHAPTER 2: Installation and Connection 2.4.1 Simple Operations Y ou can dial a number by using the AT D command and the phone number of the modem with which you wish to connect, e.g., A TD6127853500 . Y our modem will dial the number , and hear a “scrambling” noise as the modem negotiates the kind of connection it can make, and once the mode[...]

26 SERIES II INTELLIGENT DA T A/F AX MODEMS 3. Software Configuration 3.1 Introduction Since your communications software configuration is affected by the capabilities of your computer , this chapter begins with a discussion of the limitations of some serial ports and how to identify them. It then discusses communications configuration in general a[...]

27 CHAPTER 3: Software Configuration Macintosh ® computers do not use UAR T s. The Macintosh SE through IIfx models use a Zilog ® Z8530 chip called a Serial Communications Controller , or SCC, that has a maximum speed of 57,600 bps. This speed can be compromised by other serial communications, including printer transmissions and Appletalk ® , th[...]

28 SERIES II INTELLIGENT DA T A/F AX MODEMS 3.2.2 The 16550 U ART and Windows 3.1 Windows 3.1 may cause a loss of data when communicating at high speed, even with a 16550 UAR T installed. Because Windows is multitask- ing—it switches between several programs running at the same time — it can make the serial port wait briefly while Windows per f[...]

29 CHAPTER 3: Software Configuration 3.3 Configuring Y our Software Communications software must be configured to work with your mo- dem, your computer , and the remote system it is calling. Fortunately , most communications programs make the process easy by providing a default initialization string for your modem as well as defaults for most of th[...]

30 SERIES II INTELLIGENT DA T A/F AX MODEMS 3.4 PC Initialization Strings W e recommend the following initialization string for a Series II Modem connected to a PC-compatible computer when sharing a line with a telephone: A T &F X4 S0=0 ^M This string resets the Modem to the factory default settings, selects ex- tended result codes with NO DIAL[...]

31 CHAPTER 3: Software Configuration This string selects the factory default parameters, then turns auto- answer off and stores that setting, along with all other current para- meters, in nonvolatile memory . The &F9 command causes the modem to load the values from nonvolatile memory the next time it receives the &F command. Y ou will use t[...]

32 SERIES II INTELLIGENT DA T A/F AX MODEMS Chapter 3: Software Configuration Y ou can store the initialization string in nonvolatile memor y . With your communications software open and connected to the modem’ s COM port, type the initialization string in the terminal window , substituting a carriage return for ^M . T o store the string, enter A[...]

33 CHAPTER1: Specifications User Guide for Series II Modems 3.6.2 T erminal Emulation If you are accessing the remote computer as if from an on-site terminal, the keyboard codes used by your computer may not match the ones used by the remote computer . T o be compatible with the remote com- puter , your software must be able to substitute the appro[...]

34 SERIES II INTELLIGENT DA T A/F AX MODEMS The command to disable compression is A T &E14 <CR> . If you have an older UAR T or if you use your modem mostly for downloading long, compressed files from BBSs, you may want to include the &E14 command in your initialization string as follows: A T &F S0=0 X4 &E14 ^M As a general ru[...]

35 CHAPTER 4: Manual Dial and Automatic Answer 4. Manual Dial and Automatic Answer 4.1 Introduction W e’ll assume that yours is the ver y common application, where you are using a Series II Modem to dial up a remote computer . The Series II Modem has been factory preset for originating a call to a compatible 33,600 bps modem (also set up for hard[...]

36 SERIES II INTELLIGENT DA T A/F AX MODEMS Entering AT automatically sets the modem’ s speed to match the speed of the computer or terminal, and also sets the modem’ s parity . The A T characters alert the modem that a command follows. The A T Command can also be used to clear the command buffer , by simply typing AT and hitting RETURN. The le[...]

37 CHAPTER 4: Manual Dial and Automatic Answer 4.3 A utomatic Leased Line Restoral Operation (336+ Only) When the Series II Modem 336+ (MD1640A) is in Dial Backup mode, it periodically checks the leased line to see if it's operational and tries to restore the leased line if possible. S-Register S18 determines how often restoral attempts occur [...]

38 SERIES II INTELLIGENT DA T A/F AX MODEMS After a preset period of time (determined by S-Register S18), the modem automatically tries to restore the leased line. The parameters used to determine if a leased line is down (so automatic dial back can occur), is based on the Series II Modem doing a “retrain” on the leased line due to an error con[...]

39 CHAPTER 4: Manual Dial and Automatic Answer 4.6 Dial-Up Operation (336+ Only) When your Series II Modem 336+ (MD1640A) is used as a dial-up modem (DIP-Switch #10 in the UP position), it can both originate and answer calls. T o originate calls, you use the automatic dialing capability of the Modem's Command mode. T o do this, use the compute[...]

40 SERIES II INTELLIGENT DA T A/F AX MODEMS Once you press the switch, the tone you hear should change to another pitch, or change into a rough-sounding scrambled noise. Y ou then replace the telephone handset in its cradle, and your data communications begins. Note that the Series II Modem may call manually via the keyboard command AT D , or by pr[...]

41 CHAPTER 4: Manual Dial and Automatic Answer 4.9 Manual Ans wering W e have shown that the Series II Modem can automatically answer incoming calls. The Modem can also answer manually , under your control. The most typical application involves you and another person, who, after carrying on a voice conversation, want to convert to data communicatio[...]

42 SERIES II INTELLIGENT DA T A/F AX MODEMS When a call is dialed from the originating modem, the called modem responds to the ringing by switching into Answer mode and by turning on its RI (Ring Indicator , RS-232C/V .24 Pin 22) signal as the rings are detected. (The Modem-MAC does not use DTR.) Note that in order for the called modem to be able t[...]

43 CHAPTER 4: Manual Dial and Automatic Answer 4) Abort Timer . Answer Mode: When OH ( Of f Hook ) comes on, the called modem starts a forty-five-second timer and waits for a carrier signal from the originating modem. If carrier is not detected within this period, the modem disconnects (hangs up) and is ready for another call. Originate Mode: The a[...]

44 SERIES II INTELLIGENT DA T A/F AX MODEMS 5. Command Mode 5.1 Introduction A T commands are the means by which you, and your communications software, are able to communicate with and configure your modem. They enable you to establish, read, and modify parameters in addition to dialing. The following provides both a summary and a detailed explanat[...]

45 CHAPTER 5: Command Mode 5.1.2 Functional Modes The Series II Modem can be in one of two functional states (see Figure 5-1 ). These are "Command mode" and "On-line mode" . (There is also an in- between state, "W ait-for-Car rier" , where the modem is out of Command mode but not yet really On-Line. When the modem is i[...]

46 SERIES II INTELLIGENT DA T A/F AX MODEMS Figure 5-1. Functional Modes 5.2 Summary of A T Commands A wide variety of autodial operations and modem options can be con- trolled when the Series II Modem is in Command Mode. Remember , nearly all commands begin with AT . These commands are organized into several functional groups. An al- phabetical su[...]

47 CHAPTER 5: Command Mode ; Return to Command Mode After Dial Command R Reverse Mode of Operation ! Flash On Hook $ A T&T "Calling Card" T ones @ Quiet Answer MEMORIZE PHONE NUMBERS D ...N Store Phone Numbers NN Number Linking L List Numbers Stored in Memory ST ORE MODEM &F Load Factory Defaults CONFIGURA TIONS &W Store Confi[...]

48 SERIES II INTELLIGENT DA T A/F AX MODEMS CONTROL RS232C &C Carrier Detect Control INTERF A CE &D Data T erminal Ready Control &R Clear T o Send Control &S Data Set Ready Control &RF CTS/R TS Control &SF DSR/CD Control CONFIGURE &E0 Normal Mode ERROR &E1 Auto-Reliable Mode CORRECTION &E2 Reliable Mode #L0 Negot[...]

49 CHAPTER 5: Command Mode $EB 336 (MD1641A) only: 10/11-Bit Asynchronous Format #P Parity Selection CONFIGURE D A T A &E14 Data Compression Disabled COMPRESSION &E15 Data Compression Enabled CONFIGURE SPEED $B A0 Speed Conversion On CONVERSION $B A1 Speed Conversion Off $MB Set modem speed (e.g., $MB33600) $SB Set serial port speed (e.g., [...]

50 SERIES II INTELLIGENT DA T A/F AX MODEMS READ AND Sr? Read Current S-Register V alue ASSIGN Sr= Assign S-Register V alue S-REGISTER V ALUES REMO TE #CBN Passwords for Callback Phone #s CONFIGURA TION #DB Callback Security Enable/Disable & CALLB A CK #I Change LOGIN Password SECURITY #RCBNxx Erase Password Linked with Memory Location xx #S Ch[...]

51 CHAPTER 5: Command Mode The following tables define the result codes generated by the &Q command (refer to Appendix G for Result Code Summary). T able 5-1 &Q0 "Series II" Result Codes TERSE VERBOSE TERSE VERBOSE 0 OK 11* CONNECT 4800 1 CONNECT 12* CONNECT 9600 2 RING 13* CONNECT 14400 3 NO CARRIER 19* CONNECT 19200 4 ERROR 21* [...]

52 SERIES II INTELLIGENT DA T A/F AX MODEMS 5.4 Dialing Commands 5.4.1 Dialing Action Commands Dial Command D The letter D in a command causes the Series II Modem to dial the telephone number immediately following it. For example, if you enter A TD5551212 and hit RETURN, the Modem dials the number 555-1212. The D command is also used in conjunction[...]

53 CHAPTER 5: Command Mode This command would be used only if you had already reached a busy number after executing a normal dial command. Y ou simply enter A: (you need not enter A T , nor do you need to hit RETURN), and the modem will redial the number for you. If you again reach a busy signal, it re-dials again and again until it no longer detec[...]

54 SERIES II INTELLIGENT DA T A/F AX MODEMS V oice/Data Dialing $VD Another alternate method of causing the Series II Modem to automatically dial is V oice/Data Dialing. With V oice/Data Dialing, the modem automatically dials the phone number stored in the N1 position of memory whenever the V oice/Data switch is toggled. Y ou must first enter A T$V[...]

55 CHAPTER 5: Command Mode Nearly all telephone systems in the U.S. are now compatible with tone dialing. Since that is the faster method, you will probably choose the tone method for your dialing. An example of combining pulse and tone dialing could involve a PBX system where 9 had to be pulse-dialed first, then the rest of the number tone-dialed [...]

56 SERIES II INTELLIGENT DA T A/F AX MODEMS W ait f or Ne w Dial-T one W A W inserted in the dialing command causes the Series II Modem to wait for another dial tone, and not resume dialing until another dial tone is detected. It is not necessary to enter a W at the beginning of the dialing command to wait for a modem dial tone, because the modem w[...]

57 CHAPTER 5: Command Mode Flash On Hook ! Some switchboard systems react to a momentary On Hook. An exclamation mark inserted in the command causes the modem to “flash” on hook for a half of a second, as if you had held the switch hook button on a telephone down for a half second. For example, to flash On Hook after dialing the number 555-1234[...]

58 SERIES II INTELLIGENT DA T A/F AX MODEMS for at least one ringback and 5 seconds of silence. If a busy signal is detected, the Series II Modem hangs up and generates a BUSY result code. If it does not detect 5 seconds of silence, a NO ANSWER result code is generated after hanging up. If 5 seconds of silence is detected, the second number (746-55[...]

59 CHAPTER 5: Command Mode T o link the number in N1 to the number N2, simply enter A TN1N2 and hit RETURN. Several numbers can be linked in the same command. For example, you could link N1 to N2 to N3 to N4 by entering A TN1N2N3N4 and RETURN or you could link N1 to N2 and back to N1 and then back to N2 by entering A TN1N2N1N2 and RETURN. The only [...]

60 SERIES II INTELLIGENT DA T A/F AX MODEMS 5.4.4 Configuration and Default Storage Commands Store Configuration & S-Register P arameter s in Non-V olatile Memory &W The Series II Modem can store configuration parameters and S-Register values in its nonvolatile read/write Random Access Memory (RAM) memory . The &W command does this, whi[...]

61 CHAPTER 5: Command Mode Many datacomm program issue the &F command automatically—the &F9 command allows the user to select their own factory defaults. Note that the &F8/&F9 commands should be used with &W0 . Following is a summary of how the &F and Z reset commands interact with the &W command; note how the &F r[...]

62 SERIES II INTELLIGENT DA T A/F AX MODEMS User Guide for Series II Modems The #V command gives the user the option of including V .32 terbo as part of the handshaking process in both Orignate and Answer modes. Entering A T#V0&W0<CR> includes the V .32 terbo mode in handshaking. Entering A T#V1&W0<CR> disables the Series II Mod[...]

63 CHAPTER1: Specifications Chap 5: Command Modeter 5.4.5 Command Response (Result Code) Commands Echo Command Mode Characters E If the Series II Modem is connected to a full-duplex computer , it may be necessary for the modem to be configured to echo back characters entered while in the Command Mode in order for them to be displayed. The E command[...]

64 SERIES II INTELLIGENT DA T A/F AX MODEMS Result Codes (V erbose/T erse) V The V command controls whether the Series II Modem’ s result codes are displayed as word ( “verbose” ) or single digit ( “terse” ) messages. For example, if after dialing, no carrier signal is detected, the resulting message can be displayed either as NO CARRIER [...]

65 CHAPTER 5: Command Mode Regarding the Series II Modem’ s method of dialing, the Modem can detect standard dial tones and busy signals. This capability ( “smart dialing” ) allows the modem to wait for a dial tone, and when one is detected, to begin dialing immediately . The Modem also can detect a distant busy signal if, after dialing, it r[...]

66 SERIES II INTELLIGENT DA T A/F AX MODEMS 5.4.6 Phone Line Conditioning Commands Guard T ones &G The &G command is used to control the presence or absence of guard tones from the transmitter when in Answer mode, at either 1200 or 2400 bps. Guard tones are used in Europe and other areas for the modem to function in the telephone systems. G[...]

67 CHAPTER 5: Command Mode codings except under an unusual line condition called impulse noise. A T#T0 turns T rellis coding off and A T#T1 turns T rellis coding on (factory default). Fallbac k Modes When On-Line #F If line conditions deteriorate, the Series II Modem automatically drops its transmission speed ( “fallback” ). The #F command cont[...]

68 SERIES II INTELLIGENT DA T A/F AX MODEMS A uto Speed Detect #A The function of the #A command is to detect and select the operational data rates (the “starting” speeds) with which the Series II Modem uses for initial handshake and speed selection. Remember , this command does not control the originating data rate of the modem (that is done b[...]

69 CHAPTER 5: Command Mode Data T erminal Ready Contr ol &D Data T erminal Ready (DTR) on Pin 20 of the RS232C inter face is required in order for the Series II Modem to operate. A high DTR signal tells the modem that the device to which it is connected is active, or "ready" to communicate through the modem. If the signal is not being[...]

70 SERIES II INTELLIGENT DA T A/F AX MODEMS Data Set Ready Contr ol &S The &S command allows you to control the status of the Data Set Ready signal (DSR, Pin 6) on the RS232C inter face. Y ou have three choices. Y ou can force the signal high, allow it to act normally , or set it to stay high until the modem disconnects, go low momentarily [...]

71 CHAPTER 5: Command Mode Normal Mode &E0 In Normal mode of operation, the Series II Modem’ s V .42 error correc- tion capabilities are disabled, and the modem functions as a non-error - correcting modem. A uto-Reliab le Mode &E1 In Auto-Reliable mode during the handshaking procedures at the start of the on-line connection, the Series II[...]

72 SERIES II INTELLIGENT DA T A/F AX MODEMS Reliable Mode &E2 In Reliable mode, the Series II Modem uses its V .42 error correction capabilities during all transmissions, and must be connected to another modem with a similar protocol activated (MNP or LAP-M). V .42 Mode Select #L The V .42 standard implements both MNP Class 3 & 4 and LAP-M [...]

73 CHAPTER 5: Command Mode This command is for Originate mode only . Answer mode still accepts MNP or LAP-M. #L3 Command In the prior commands, the modems use a two phase process to establish a V .42 connection (detection to establish whether the remote modem is also error correcting, and then protocol establishment to deter- mine parameters and to[...]

74 SERIES II INTELLIGENT DA T A/F AX MODEMS The $F command can be used to disable this fallback-to-Normal-due-to- CARRIAGE-RETURN feature. The Auto-Reliable fallback character ( $F ) and Auto Reliable buffering ( $A ) commands can be used together to cause the modem to buffer all data received up until the CARRIAGE RETURN, and then drop to Normal m[...]

75 CHAPTER 5: Command Mode V .42 Error Correction/300bps $E At 300 bps, error correction is not typically used. $E1 lets the Series II Modem function at 300 bps in either Normal ( &E0 ), Auto-Reliable ( &E1 ) or Reliable ( &E2 ) mode. $E0 , which is the Modem’s default, disables 300 bps/V .42 error correction altogether . A T$E0 = No [...]

76 SERIES II INTELLIGENT DA T A/F AX MODEMS Figure 5-2. Flow Control and Pacing Hard ware Flow Contr ol &E4 With Hardware Flow Control, the modem uses its RS232C inter face to control the flow of data from the computer or terminal to which it is attached. The CTS (Clear to Send) signal on Pin 5 of the RS232C inter face is brought low to stop th[...]

77 CHAPTER 5: Command Mode Xon/Xoff Flow Contr ol &E5 Xon/Xoff is the most commonly used method of flow control. Under this method, control characters known as “Xon” and “Xoff” are inserted by the modem into the data to start and stop the flow of data from the computer or terminal to which the modem is attached. Xoff, which is a Control[...]

78 SERIES II INTELLIGENT DA T A/F AX MODEMS When two Series II Modems are connected in Normal mode (not using error correction), Xon/Xoff can be used to control the flow of data between the modems. Flow Control can be turned on or off with the Normal Mode Modem Flow Control commands. When the modems are connected in Reliable mode, a different metho[...]

79 CHAPTER 5: Command Mode connected in Reliable mode, a different method of modem flow control is used, and the commands for Normal Mode Modem Flow Control are ignored. When you are using Speed Conversion in Normal Mode, you must activate the modem’ s Normal Mode Modem Flow Control. (Speed Conversion is explained in Section 5.4.11 .) T erminal/C[...]

80 SERIES II INTELLIGENT DA T A/F AX MODEMS Asynchr onous W ord Length Selection $EB (336 Onl y) The Series II Modem 336 (MD1641A) has an 11-bit capacity when operating asynchronously . The $EB command selects between 11-bit and 10-bit operation. A T$EB1 enables 11-bit format (1 start bit, 8 data bits, 1 parity bit, and 1 stop bit). A T$EB0 (defaul[...]

81 CHAPTER 5: Command Mode 5.4.10 Compression, Error Correction, Flow Control, Pass-Thr ough and Pacing Commands The Series II Modem has a variety of commands to control its error correction and data compression options. These additional commands are listed below . (Remember to precede each command with the A T characters.) Factory-default settings[...]

82 SERIES II INTELLIGENT DA T A/F AX MODEMS Enq/Ack P acing Commands: &E8 = Enq/Ack method of pacing off* &E9 = Enq/Ack method of pacing on Normal Mode Modem Flow Contr ol Commands: &E10 = Normal Mode Modem Flow Control off* &E11 = Normal Mode Modem Flow Control (Xon/Xoff) on Computer-or T erminal-Initiated Flow Contr ol (P acing) C[...]

83 CHAPTER 5: Command Mode computer must be set at a fixed baud rate, regardless of whether the modem is communicating over the phone line at 300, 1200, 2400, 9600, 14,400,19,200, 24,000, 28,800 or 33,600 bps. In this application, speed conversion allows the modem to match its speed to that of the calling modem, while at the same time communicating[...]

84 SERIES II INTELLIGENT DA T A/F AX MODEMS The command to set the Modem Baud Rate is A T$MBn , where n can be 300, 1200, 2400, 4800, 9600, 14,400,19,200, 28,800 or 33,600 bps as listed below: A T$MB300 = 300 bps A T$MB1200 = 1200 bps A T$MB2400 = 2400 bps A T$MB4800 = 4800 bps A T$MB9600 = 9600 bps A T$MB14400 = 14400 bps A T$MB19200 = 19200 bps A[...]

85 CHAPTER 5: Command Mode same. This provides you with a convenient way to switch the serial port speed, and still make it easy to go back to the original speed automati- cally the next time the modem is powered up or reset with an AT Z command. The command to set the Serial Port Baud Rate is A T$SBn , where n can be 300, 1200, 2400, 4800, 9600, 1[...]

86 SERIES II INTELLIGENT DA T A/F AX MODEMS At the time of this writing, we have three screens of Help information (Screen #1, #2 and #3), and more screens may be added in the future. The Help commands are structured so that you can call up one of three Help screens, as follows: A T$H1 = Help Screen #1 A T$H2 = Help Screen #2 A T$H3 = Help Screen #[...]

87 CHAPTER 5: Command Mode Listing Current Operating P arameter s L5 L7 The L5 and L7 commands list the current operating parameters of your modem. This information can be very useful when you are changing communications software or when you are changing modem default settings. The command to list the Series II Modem’ s current operating parame- [...]

88 SERIES II INTELLIGENT DA T A/F AX MODEMS Figure 5-2. On-line diagnostics information. On or Off Hook H Y ou can make the Series II Modem hang up (go On Hook). Entering A TH1<CR> brings the line Off Hook, just as if you picked up the telephone set. Y ou can hang up by entering A TH0 or A TH (the default is 0 when no number is entered). Esca[...]

89 CHAPTER 5: Command Mode When this is done, the modem escapes to Command Mode, executes the command (if any), and then remain in Command mode. For example, to hang up the modem at the end of a call, enter +++A TH and hit RETURN. There is no need to incorporate pauses before and after the plus signs, as done in earlier modems. BREAK A T<CR> [...]

90 SERIES II INTELLIGENT DA T A/F AX MODEMS Force Ans wer Mode A Y ou can force the Series II Modem into Answer mode with the modem’s A command. Entering ATA when in Command mode immediately brings your mo- dem off-hook, out of Command mode and into On-Line Answer mode, and causes it to transmit its carrier signal over the phone line. If no respo[...]

91 CHAPTER1: Specifications These commands are listed below . Enable/Disable Reading of Line Pr obe Information Commands: %DP0 Do not read Line Probe information from DSP during handshake (Default). %DP1 Read Line Probe information from DSP during handshake. Format of Line Probe ( Graph or T able ) Commands: %DF0 Data is displayed in Graph format. [...]

92 SERIES II INTELLIGENT DA T A/F AX MODEMS 6. S-Register s 6.1 Introduction Certain Command Mode configurations are stored in memory registers called, S-Registers. The S command is used to assign a value to, and to read the current value of an S-Register . T o assign a value to an S- Register , enter the letter S , followed by the S-Register numbe[...]

93 CHAPTER 6: S-Registers time an incoming ring signal is detected, S1 increases its value by one, up to a maximum of 255. If you set S1 to a value other than its default value of zero, or if the value is increasing with rings, this new value remains stored in S1 for eight seconds after the last ring is counted, after which time the value reverts t[...]

94 SERIES II INTELLIGENT DA T A/F AX MODEMS S5 Backspace Character Unit: Decimal equivalents of ASCII characters Range: 0-127 Default: 8 (^H) Description: S5 defines the character recognized as BACKSP ACE. S5 may be set for any ASCII character . S6 W ait Time f or Dial T one Unit: Seconds Range: 2-255 Default: 2 Description: S6 sets the time the mo[...]

95 CHAPTER 6: S-Registers default setting is two seconds. S8 may be set for up to 255 seconds. S8 also sets the time the modem waits before retrying a call after detecting a busy signal. Some computer systems need more than two seconds to reset (in which case you should increase the value of S8). S9 Carrier Detect Response Time Unit: 100-mSec inter[...]

96 SERIES II INTELLIGENT DA T A/F AX MODEMS S11 T one Dialing: T one Spacing and Duration Unit: Milliseconds (mSec) Range: 1-255 Default: 70 Description: S11 sets the speed of tone dialing (spacing and tone duration times). The default value is 70 mSec, meaning that each tone is on for 70 mSec with a 70 mSec pause between each. The minimum S11 valu[...]

97 CHAPTER 6: S-Registers S16 Callback Attempts Unit: Attempts Range: 1-255 Default: 4 Description: S16 defines the number of attempts allowed after initial passwords have been exchanged between modems. S17 Changing Break Time Unit: 10-mSec intervals Range: 0-250 Default: 250 Description: S17 defines the break time ( space ) sent to the local PC. T[...]

S19 Dial-Back Timer (336+ Only) Unit: Minutes Range: 0-255 Default: 1 Description: In the Series II Modem 336+ (MD1640A), S19 is a timer that begins when the lease line goes down. S19 specifies the duration of time the modem attempts to reestablish the lease line connection. S24 PBX/CBX Disconnect Drop Time for DSR/CTS/CD Unit: 50-mSec intervals Ra[...]

99 CHAPTER 6: S-Registers dropout time can be increased in 100-mSec intervals, up to a maximum of 25.5 seconds (S25 set to 255). The default S25 setting of zero corresponds to a dropout time of 50 mSec. All other possible settings (1 through 255) correspond to their multiples of 100 mSec. S26 Failed P asswor d Attempts Unit: Failed attempts Range: [...]

100 SERIES II INTELLIGENT DA T A/F AX MODEMS S30 Inactivity Timer Unit: Minutes Range: 0-255 Default: 0 Description: S30 causes the modem to disconnect if no data is transmitted or received for a specified time. This timer runs during both Reliable and Normal error correction connections. The timer restarts any time a data character is passed throu[...]

101 CHAPTER 6: S-Registers S36 Time Between DTR Inactive and Modem Off-Hook Unit: Seconds Range: 0-255 Default: 0 Description: The DTR Busy-out feature uses S-Register S36 to set the time between DTR inactive (low) and the modem going off-hook . S36 can be set in one- second intervals from 0 to 255 seconds. With the default setting of S36=0, DTR Bu[...]

102 SERIES II INTELLIGENT DA T A/F AX MODEMS 6.2 Reading and Assigning S-Register V alues The S command is used to assign a value to, and to read the current value of, an S-Register . T o read an S-Register value, enter the letter S followed by the S-register number and a question mark ( ? ), then hit RETURN. For example, entering A TS7? and hittin[...]

103 CHAPTER 6: S-Registers 6.2.2 Examples of Reading V alues T o verify that you entered the value correctly in the above examples, enter A TS8? and hit RETURN in the first example, A TS0? in the second, and A TS2? in the third example. Y ou should receive the response 005 in the first example, 030 in the second example, and 055 in the third exampl[...]

104 SERIES II INTELLIGENT DA T A/F AX MODEMS 7. Callback Security and Remote Configuration 7.1 Introduction This chapter describes how the Series II Modem Callback and Remote Configuration features operate. These features use a multilevel security system, which involves the use of LOGIN Passwords, Setup Passwords and Remote Escape Characters. The p[...]

105 CHAPTER 7: Callback Security and Remote Configuration long). Y ou use the modem's LOGIN Password and the Set-Up Password plus special Callback commands to access this memory . The memor y is thirty numbers long and replaces your modem's normal phone number memory . Each number is 35 characters long and can contain commands as well as [...]

106 SERIES II INTELLIGENT DA T A/F AX MODEMS T able 7-1. Modem LOGIN, Setup and Remote Escape Code Procedures T o change y our modem’ s LOGIN Passw ord and Setup P asswor d: Step Procedure Note: Passwords are upper/lower case sensitive. The case you enter here is the case that must be used at Log-In. 1. T ype A T#IBLA CK BO X and hit RETURN. Y ou[...]

107 CHAPTER 7: Callback Security and Remote Configuration T o turn y our modem's Callbac k Security feature on and off: 7. If you want Callback Security with both remote and local password security , enter A T#DB1 and hit RETURN. Y ou must turn on Callback Security to be able to enter dial back phone numbers. 8. If you want Callback Security o[...]

108 SERIES II INTELLIGENT DA T A/F AX MODEMS T able 7-2. Callbac k P ass wor d and Dial Back Phone Number Entry Procedures Step Procedure 1. Enter your modem's LOGIN Password (as selected in T able 7-1 ) by entering the following: A T#Ixxxxxxxxxx<CR> (xxxxxxxxxx from T able 7-1 ) Enter your modem's Setup Password (as selected in T a[...]

109 CHAPTER 7: Callback Security and Remote Configuration A T+ - DT ...????N1 <CR> (number for location N1)...etc Note: Y ou must indicate within the command string that the modem either Pulse dials ( A TDP ...) or T one dials A TDT ...). The maximum length of the number is 35 characters. The number may include commands as well as your number[...]

110 SERIES II INTELLIGENT DA T A/F AX MODEMS T able 7-3. Callbac k Operational Sequence Procedures Per form the following steps when dialing into a dialback modem: Step Pr ocedure 1. When called, the modem answers and after a slight delay , responds with: Password> 2. Enter your modem's LOGIN Password ( T able 7-1 ) and hit RETURN. If enter[...]

111 CHAPTER 7: Callback Security and Remote Configuration 7.3.2 Remote Configuration Procedures The procedures for using the Remote Configuration features are the same whether or not a call originates from the remote modem. Once the modem is on-line, per form the procedures in T able 7-4 . T able 7-4 Remote Configuration Operation Pr ocedures Step [...]

112 SERIES II INTELLIGENT DA T A/F AX MODEMS 7.4 Remote Configuration and Callback Security A T Commands The following A T commands are used with Remote Configuration and Callback Security features. Assign P ass w or ds f or Callbac k Phone Numbers #CBN When you have callback security enabled for the Series II Modem, anyone trying to connect with t[...]

113 CHAPTER 7: Callback Security and Remote Configuration Change LOGIN Pass wor d #I The default LOGIN password for your Series II Modem is "BLACK BOX" . If you choose to activate callback security , you should change the LOGIN password using this command in the following format: A T#Ixxxxxxxxxx <CR> (where xxxxxxxxxx is the current[...]

114 SERIES II INTELLIGENT DA T A/F AX MODEMS 7.5 Remote Configuration/Callback Security S-Registers The following S-Registers are used with Remote Configuration and Callback Security features. Remote Configuration Character (S13) S13 defines the Series II Modem remote configuration escape character . When the S13 character is entered three consecut[...]

115 CHAPTER 7: Callback Security and Remote Configuration Failed P asswor d Attempts (S26) S26 counts the number of times there has been a failed password attempt. For example, if you entered A TS26? and the message 003 were displayed, that would mean someone had failed three times to gain access to your modem using its password security system. Un[...]

116 SERIES II INTELLIGENT DA T A/F AX MODEMS 8. Modem T esting 8.1 Introduction Each time you power up the Series II Modem, it per forms an automatic self- test to ensure proper operation. The Modem also has four diag- nostic test features: Local Analog Loopback, Digital Loopback (remote/automatic), Digital Loopback (local/manual) and a modem Back-[...]

117 CHAPTER 8: Modem T esting 8.2 Local Analog Loopback T est/V .54 Loop 3 In this test, data from your computer or terminal is sent to your modem's transmitter , converted into analog form, looped back to the receiver , converted into digital form and then received back at your monitor for verification. No connection to the phone line is requ[...]

118 SERIES II INTELLIGENT DA T A/F AX MODEMS 5. When testing is completed, you may exit Answer mode by entering an Escape Sequence ( +++A T<CR> or <BREAK>A T<CR> ), which returns the modem to Command mode. 6. Y our modem passes this test if the data entered from your keyboard is the same as the data received on your monitor . If d[...]

119 CHAPTER 8: Modem T esting In this test the local modem is placed in Digital Loopback mode. Data is entered and transmitted from the remote modem (which is not in digital loopback mode), sent across the phone line to the local modem and looped back to the remote modem. The test procedure is as follows: 1. Go into T erminal mode. T ype AT and hit[...]

120 SERIES II INTELLIGENT DA T A/F AX MODEMS 8.4 Digital Loopback T est/V .54 Loop 2 (Remote/A utomatic) In this test, your modem must be On-line with another modem set up to respond to a request for Digital Loopback, such as another Series II Modem. With the Modem, this ability to respond is controlled by the &T command. A T&T4 enables the[...]

121 CHAPTER 8: Modem T esting 3. T ype the Escape Sequence ( +++A T<CR> or <BREAK>A T<CR> ) which brings your modem into Command mode, while still main- taining the connection with the remote modem. 4. T ype A TU2 and hit ENTER. The local modem responds to this command by transmitting an unscrambled marking signal, which causes th[...]

122 SERIES II INTELLIGENT DA T A/F AX MODEMS 6. Set DIP-Switch # 3 UP on both local and remote modems. This changes the transmit level to -15dB and this change is necessary to operate in back-to-back mode 7. T urn on both units and wait for carrier detect (CD). 8. Short out pins 2 and 3 on the RS-232C interface on the remote modem (with a paper cli[...]

123 CHAPTER 8: Modem T esting 9. Entered characters should echo back to the sending modem. Figure 8-4B. Back-to-Back T esting 8.6 Synchr onous Mode T esting The following tests must be run with your modem in Synchronous mode (DIP Switch #12 in the Up (OPEN) position), DIP Switch #9 controls the modem’ s Synchronous mode testing function. (Refer t[...]

124 SERIES II INTELLIGENT DA T A/F AX MODEMS T o initiate the Local Analog Loopback T est, with the modem in Synchronous mode: 1. Enter A T&M1U . This first switches your modem form asynchro- nous to synchronous mode, and places it into the Analog Loop- back/Originate mode. The modem is now out of the Command mode and in the pseudo On-Line mode[...]

125 CHAPTER 8: Modem T esting data passed from the remote modem’ s transmit circuit are looped back from the local modem and are received at the remote modem’ s receive circuit (multiple upper case “U” characters in Figure 8-6 ). First make certain that you are set up for Synchronous operation by placing DIP-Switch #12 in the UP position. T[...]

126 SERIES II INTELLIGENT DA T A/F AX MODEMS in Figure 8-6 ), the Local Analog Loopback T est should be per formed on both the remote and local modems. If that test is successful, the problem may be the phone lines. First make certain that you are set up for Synchronous operation by placing DIP-Switch #12 in the UP position. T o initiate the Digita[...]

127 CHAPTER 9: DIP-Switch Settings 9. DIP-Switch Settings 9.1 Introduction There are several DIP-Switch options on the Series II Modem’ s printed circuit (PC) board. The DIP-Switches are accessible through a cut-out on the side of the modem. This chapter explains the Modem printed- circuit board options. Sixteen DIP-Switch settings and the modem&[...]

128 SERIES II INTELLIGENT DA T A/F AX MODEMS Figure 9-2. Series II Modem 336+ (MD1640A) PC Board 9.2 DIP-Switch Option Settings Switch #1 Forced DTR -- "DTR" (Asynchr onous/Sync hr onous Mode/Leased Line/Dial-Up) The Series II Modem must have a high DTR signal in order to operate. DTR is provided to the modem by the terminal or computer t[...]

129 CHAPTER 9: DIP-Switch Settings Switch #2 Flow Contr ol - &E4/&E5 (Asynchr onous Mode/Leased Line/Dial-Up) With Hardware Flow Control, the modem uses its RS-232C/V .24 inter face to control the flow of data from the computer or terminal to which it is attached. The CTS signal on Pin 5 of the RS-232C/V .24 is brought low to stop the flow [...]

130 SERIES II INTELLIGENT DA T A/F AX MODEMS Switch #3 Enable/Suppress Responses -- "Q" (Asynchr onous Mode/Dial-Up) In some Asynchronous mode applications, you may want to suppress all responses from the modem. Place DIP-Switch #3 in the DOWN position to enable Result Code responses ( Q0 ). Place DIP-Switch #3 in the UP position, and ans[...]

131 CHAPTER 9: DIP-Switch Settings AS/400 Mode Enabled = Switch #4 DOWN AS/400 Mode Disabled = Switch #4 UP Factory Default Setting = UP Switch #4 Unix UUCP Spoofing (Asynchr onous Mode/Leased Line/Dial-Up) The Series II Modem can be configured for use with Unix equipment which employs ACK flow control to monitor data integrity . The Modem can do &[...]

132 SERIES II INTELLIGENT DA T A/F AX MODEMS Originate Mode Enabled = Switch #5 DOWN Answer Mode Enabled = Switch #5 UP Factory Default Setting = UP) Switch #6 Maximum Thr oughput Setting (Asynchr onous Mode/Leased Line/Dial-Up) Some applications require you to dial into services with maximum throughput on, and other applications where maximum thro[...]

133 CHAPTER 9: DIP-Switch Settings applications, especially asynchronous, this switch should be set so that R TS is forced On (DIP-Switch #7 DOWN) R TS functions Normally = Switch #7 UP R TS forced On = Switch #7 DOWN Factory Default Setting = DOWN Switch #8 Enable/Disable Command Mode -- "Com" (Asynchr onous/Sync hr onous Mode/Leased/Dia[...]

134 SERIES II INTELLIGENT DA T A/F AX MODEMS Switch #10 Leased Line/Dial-Up Operation -- "DDD" (Asynchr onous/Sync hr onous Mode/Leased Line/Dial-Up) The Series II Modem operates in either leased-line or dial-up modes. This switch controls leased-line/dial-up operation. Place DIP-Switch #10 in the UP position for Dial-Up operation. Place [...]

135 CHAPTER 9: DIP-Switch Settings Switch #12 Asynchr onous/Sync hr onous Operation -- "Sync" (Asynchr onous/Sync hr onous Mode/Leased Line/Dial-Up) The Series II Modem can operate in either Asynchronous mode or Synchronous mode. In Synchronous mode, start and stop bits are eliminated. The modem's internal clock circuits on the RS-23[...]

136 SERIES II INTELLIGENT DA T A/F AX MODEMS Command mode. This is done by setting DIP-Switch #15 DOWN. With DIP-Switch #15 in the UP position, both CD and DSR will be either on or off, depending on the On-Line status. CD and DSR normal = Switch #15 UP CD and DSR forced On = Switch #15 DOWN Factory Default Setting = UP Switch #16 2 Wire/4 Wire Oper[...]

137 CHAPTER 9: DIP-Switch Settings 9.4 Recording Option Configurations This section lets you record any changes you may have made to the DIP- Switch settings. Circle the appropriate setting and record the effect for future reference. DIP-Switches Sw . Function P osition Effect #1 Force DTR/DTR from Inter face* UP* DOWN #2 Flow Control &E4*/&[...]

138 SERIES II INTELLIGENT DA T A/F AX MODEMS Sw . Function P osition Effect #8 Command Mode Enabled* UP (Sync/Async/Dial/Leased) DOWN* #9 Local/Remote* LoopBack UP (Async/Sync/Dial/Leased) DOWN* #10 Dial-Up*/Leased-Line UP* DOWN #11 “A T" vs. “Series II" Result Codes* UP (Asynchronous) DOWN* #11 Internal*/External Clocking UP (Synchro[...]

139 APPENDIX A: T roubleshooting Appendixes Appendix A - T roubleshooting Y our Series II Modem was thoroughly tested at the factor y before it was shipped. If you are unable to make a successful connection or if you experience data loss or garbled characters during your connection, it is possible that the modem is defective. However , it is more l[...]

140 SERIES II INTELLIGENT DA T A/F AX MODEMS • If the power strip is on and the modem switch is on, try moving the modem power supply to another outlet on the power strip. • T est that the outlet is live by plugging a lamp into it. • The modem or power supply may be defective. If you have another Series II Modem, try swapping modems. If the p[...]

141 APPENDIX A: T roubleshooting • Y our communications software settings may not match the physical port the modem is connected to. The serial cable may be plugged into the wrong connector—check your computer documentation to make sure. Or you may have selected a COM port in your software other than the one the modem is physically connected to[...]

142 SERIES II INTELLIGENT DA T A/F AX MODEMS it will appear in the Conflicting Device List. Uncheck Use Automatic Settings to change the port’ s settings so they do not conflict with the other device, or select the port the conflicting device is on and change it instead. If you need to open your computer to change switches or jumpers on the confl[...]

143 APPENDIX A: T roubleshooting internal dial tone that sounds different from the normal dial tone. In that case, the modem may not recognize the dial tone and may treat it as an error . Check your PBX manual to see if you can change the internal dial tone; if you can’ t, change your modem’ s initialization string to replace X4 with X3 , which[...]

144 SERIES II INTELLIGENT DA T A/F AX MODEMS The Modem Disconnects While On-line • If you have call waiting on the same phone line as your modem, it may interrupt your connection when someone tries to call you. If you have call waiting, disable it before each call. In most telephone areas, you can disable call waiting by preceding the telephone n[...]

145 APPENDIX A: T roubleshooting File T ransfer Is Slower Than It Should Be • Y ou may have an older UART . For best throughput, install a 16550AFN UAR T . See the “Quick Start” chapter for information on how to identify your UAR T . • If you are running under Windows 3.1 and have a 16550AFN UAR T , you must replace the Windows serial drive[...]

146 SERIES II INTELLIGENT DA T A/F AX MODEMS • T r y entering the L8 (List Online Diagnostics) command in on-line mode, making a screen print of the diagnostics listing, and checking for parameters that may be unacceptable (number of re- trains, round trip delay , etc.). I Am Getting Garbage Characters on the Monitor • Y our computer and the re[...]

147 APPENDIX A: T roubleshooting A.2 Contacting Black Bo x A.2.1 Recording Modem Inf ormation Please fill in the following information on your Series II Modem on a photocopy of this page. This will help tech support in answering your questions. Modem Model No.: Modem Serial No.: Modem Firmware V ersion: COM Port #: F AX Software T ype and V ersion:[...]

148 SERIES II INTELLIGENT DA T A/F AX MODEMS A.2.2 Making the Call If you determine that your Series II Modem is malfunctioning, do not attempt to alter or repair the unit . It contains no user -ser viceable parts. Call Black Box T echnical Support at 724-746-5500. Before you do, make a record of the history of the problem. W e will be able to prov[...]

149 APPENDIX A: T roubleshooting A.4 Upgrading the Series II Modem’ s Firmware The Series II Modem has a Flash PROM which contains firmware code for the hardware and DSP code for the digital signal processor chips. At various times, we may add enhancements and/or fixes to the firmware. The flash technology used in the Series II Modem lets you loa[...]

150 SERIES II INTELLIGENT DA T A/F AX MODEMS Appendix B - Dial Pulse and T one-Dial Frequencies Dial Pulses In the example above, the digit 2 is pulse dialed, followed by the digit 1. Each pulse consists of an A mSec open and a B mSec closed, where A will be either 60 or 67 mSec and B will be either 40 or 33 mSec, for a total of 100 mSec per pulse,[...]

151 APPENDIX C: Command Summary Appendix C - Command Summary Command V alues Description AT Attention Code that precedes most comd. strings except A/, A: and Escape Codes. RETURN Pressing RETURN key executes most commands. $ In Dial Comd. This symbol placed in dialing string enables the modem to detect A T&T's "call card" tones f[...]

152 SERIES II INTELLIGENT DA T A/F AX MODEMS Command V alues Description &B n n = 0 or 1 *&B0 means normal transmit buffer size. &B1 means reduced transmit buffer size. &BS n n = 0 or 1 &BS0 means maximum transmit block size of 64 characters. *&BS1 means maximum transmit block size of 256 characters. $B A n n = 0 or 1 *$BA0 [...]

153 APPENDIX C: Command Summary %DF n n = 0 or 1 *%DF0 Line Probe Data in Graph Format. %DF1 Line Probe Data in T able Format. %DP n n = 0 or 1 *%DP0 do not read Line Probe Information from DSP during handshaking. %DP1 read Line Probe Information from DSP during handshaking. $D n n = 0 or 1 *$D0 disables DTR Dialing. $D1 enables DTR Dialing. E n n [...]

154 SERIES II INTELLIGENT DA T A/F AX MODEMS $E n *$E0 disables error correction at 300 bps. $E1 enables Autoreliable Mode at 300 bps. $E2 enables Reliable Mode at 300 bps. $EB n** n = 0 or 1 *$EB0 enables 10 bit mode. $EB1 enables 11 bit mode. %E n n=0 thru 5 % E0 = Modem W on’ t Escape. *% E1 = +++ Method (default setting). % E2 = Break Method.[...]

155 APPENDIX C: Command Summary &G n n = 0, 1 or 2 *&G0 turns off CCITT guard tones. &G1 turns on CCITT 550 Hz guard tone. &G2 turns on CCITT 1800 Hz guard tone. H n n = 0 or 1 H0 means Hang Up (go on hook). H1 means Go Off Hook. $H n n = 1 thru 3 $H1 brings up Help Screen #1. $H2 brings up Help Screen #2. $H3 brings up Help Screen [...]

156 SERIES II INTELLIGENT DA T A/F AX MODEMS #L n n = 0 thru 3 *#L0 means modems negotiate V .42 Mode. #L1 means MNP on and LAP-M off. #L2 means LAP-M on and MNP off. #L3 means no detection phase but go directly to LAP-M. * Factory Default Setting Command V alues Description M n n = 0 thru 3 M0 means Monitor speaker always Off. *M1 means Monitor sp[...]

157 APPENDIX C: Command Summary P In Dial Comd. *Modem will pulse-dial numbers following the P . &P n n = 0 or 1 *&P0 means 60-40 pulse ratio. &P1 means 67-33 pulse ratio. #P n n = 0, 1, or 2 *#P0 selects no parity . #P1 selects odd parity . #P2 selects even parity . * Factory Default Setting Command V alues Description Q n n = 0, 1 or [...]

158 SERIES II INTELLIGENT DA T A/F AX MODEMS Command V alues Description Sr =n r = 0-11, 13, Sets value of Register “r” to value of “n”, 15-19, 24-26, where “n” is entered in Decimal format. 29, 30, 32, 34... S r? r = 0-11, 13, Reads value of Register “r” and displays 15-19, 24-26, value in 3-digit Decimal format. 30, 32 or 34... $S[...]

159 Command V alues Description T In Dial Comd. Modem will tone-dial numbers following the T . &T n n = 4 or 5 &T4 means Enable Response to Request for Remote Digital Loopback. *&T5 means Disable Response to Request for Remote Digital Loopback. #T n n = 0 or 1 #T0 turns off T rellis Coded Modulation *#T1 turns on T rellis Coded Modulati[...]

160 SERIES II INTELLIGENT DA T A/F AX MODEMS Command V alues Description X n n = 0,1,2,3 or 4 *X0 selects Basic Result Codes (w/o CONNECT 1200, CONNECT 2400). X1 selects Extended Result Codes (w/CONNECT 1200, CONNECT 2400). X2 selects Standard A T Command set with NO DIAL TONE. X3 selects Standard A T Command set with BUSY . X4 selects Standard A T[...]

161 APPENDIX C: Command Summary Command V alues Description +++A T<CR> In-band Escape Sequence. Places modem in Command Mode while still remaining On- Line. Enter +++ followed by the letters A and T , up to ten command characters, and a RETURN. BREAK A T<CR> Out-of-band Escape Sequence. Places modem in Command mode while still remaining[...]

162 SERIES II INTELLIGENT DA T A/F AX MODEMS location. The (-) preceding the phone number enables direct entry when the caller uses the correct password without the callback modem having to return the call. The ??? entry at the end of the phone number represents an extension added to the main phone number . The Nxx is the memory location of the cal[...]

163 APPENDIX C: Command Summary V .25bis Commands Command Description $Vn $V0 returns modem to A T command mode when in V .25bis mode. $V1 enables V .25bis mode of operation. $V2 allows modem to receive one V .25bis command while in A T command mode without leaving A T command mode. $V5 DSR follows DTR in V .25bis mode. $V6 DSR does not follow DTR [...]

164 SERIES II INTELLIGENT DA T A/F AX MODEMS Appendix D - DIP-Switch Summary Asynchr onous Mode DIP-Switc h Condition Effect #1 UP* DTR dependent on inter face Down DTR forced On at all times #2 UP* Hardware Flow Control Down Xon/Xoff Flow Control #3 UP -15 dB T ransmission (leased line) Down* -9 dB T ransmission (leased line) #4 UP* UUCP Spoofing [...]

165 APPENDIX D: DIP-Switch Summary Synchr onous Mode DIP-Switc h Condition Effect #1 UP* DTR Dependent On inter face Down DTR forced On at all times #2 UP* SDLC Mode On Down BSC Mode On #3 UP Command Mode Response Off Down* Command Mode Response On #4 UP* AS/400 Mode Off Down AS/400 Mode On #5 UP* Answer Mode On Down Originate Mode On #6 UP* Slave [...]

166 SERIES II INTELLIGENT DA T A/F AX MODEMS Down Leased Line Operation #11 UP External Clock selected Down* Internal Clock selected #12 UP Synchronous Mode On Down* Asynchronous Mode On *Factory Default Setting DIP Switches #13-16 DIP-Switc h Condition Effect #13/#14 UP/UP* 28.8 K bps Operation #13/#14 Down/UP 19.2 K bps Operation #13/#14 UP/Down [...]

167 APPENDIX E: S-Register Summary Appendix E - S-Register Summary S-REG. UNIT RANGE DEF A UL T DESCRIPTION S 0 Rings 0-255 1 Sets number of rings before modem answers. S 1 Rings 0-255 0 Counts rings which have occurred. S 2 ASCII 0-127 43 Sets Escape Code character (default is plus “+” sign). S 3 ASCII 0-127 13 Sets character recog- nized as R[...]

168 SERIES II INTELLIGENT DA T A/F AX MODEMS S-REG. UNIT RANGE DEF A UL T DESCRIPTION S 10 100 mSec 1-255 7 Sets delay time between when carrier is lost and when modem disconnects. S 11 1 mSec 1-255 70 Sets time duration of and spacing between tones in tone-dialing. S 13 ASCII 0-127 37 Defines Remote Configuration Escape Character S 15 Seconds 10-2[...]

169 APPENDIX E: S-Register Summary S-REG. UNIT RANGE DEF A UL T DESCRIPTION S 24 50 mSec 0-255 20 Sets DSR/CTS/CD dropout time. Default (20) equals one second. S 25 100 mSec 0-255 0 Sets DTR dropout time. 0 default equals 50 mSec. S 26 Failed 0-255 0 Specifies number Attempts of failed password attempts allowed. S 29 1 1-255 20 Specifies the amount[...]

170 SERIES II INTELLIGENT DA T A/F AX MODEMS S-REG. UNIT RANGE DEFL T . DESCRIPTION S 36 Seconds 0-255 0 S36 sets the time between DTR inactive and the modem going off-hook ( busy-out ). S 37 Seconds 0-255 5 S37 sets the time allowed DTR active and the modem responding on- hook (not busy) . S 48 N/A 33, 31, 0 S48 sets speed modem 28, 26, 24, connec[...]

171 APPENDIX F: Result Code Summary Appendix F - Result Code Summary TERSE VERBOSE Effect (Digit) (W ords) 0 OK Command was executed without error; ready for next command. 1 CONNECT Modem has detected carrier and gone on-line. 2 RING Modem has detected ring caused by incoming call. 3 NO CARRIER No carrier signal has been detected within allowed tim[...]

172 SERIES II INTELLIGENT DA T A/F AX MODEMS TERSE VERBOSE Effect (Digit) (W ords) 19 CONNECT 19200 Modem has detected carrier at 19200 bps and gone on-line. 21 CONNECT 21600 Modem has detected carrier at 21600 bps and gone on-line. 24 CONNECT 24000 Modem has detected carrier at 24000 bps and gone on-line. 26 CONNECT 26400 Modem has detected carrie[...]

173 APPENDIX F: Result Code Summary Note: If Series II Modem is used in LAP-M reliable mode, the following responses change: 1L CONNECT LAPM 5L CONNECT 1200 LAPM 9L CONNECT 2400 LAPM 10L CONNECT 4800 LAPM 12L CONNECT 9600 LAPM 13L CONNECT 14400 LAPM 19L CONNECT 19200 LAPM 21L CONNECT 21600 LAPM 24L CONNECT 24000 LAPM 26L CONNECT 26400 LAPM 28L CONN[...]

174 SERIES II INTELLIGENT DA T A/F AX MODEMS Appendix G - V .25bis Operation Chapter 5 described a set of commands which let the Series II Modem dial, hang-up, and be configured for various applications. However , these commands, the A T command set, are only functional when the DTE transmits data asynchronously . That is, they cannot be used with [...]

175 APPENDIX G: V .25bis Operation added to the Delayed Number list and the oldest existing number added to the Forbidden Numbers list. Numbers are removed from the Forbidden Numbers list by after a certain time has past (also by country regulation). Some country regulations have numbers remain on the Forbidden Numbers list permanently . The Delaye[...]

176 SERIES II INTELLIGENT DA T A/F AX MODEMS If the $VD1 command is entered when in Auto-Answer mode, the modem answers immediately upon receiving the first ring. There is no disconnect message ( NO CARRIER ) if a normal connection is made. V .25bis Set-Up and Initialization Before you operate your modem in the V .25 bis mode, you need to make sure[...]

177 APPENDIX G: V .25bis Operation V .25bis Mode A T Commands The following commands will either alter standard V .25 bis behavior (so you must be careful in their use) or they are not allowed, as indicated. All other commands can be used in V .25 bis operation. A Not Allowed A/ Not Allowed A: Not Allowed D Not Allowed D...N Not Allowed $D Alters O[...]

178 SERIES II INTELLIGENT DA T A/F AX MODEMS V .25bis Responses (Result Codes) When in V .25 bis mode (the A T$V1 command executed), your modem provides you with several responses which can help you follow the progress of V .25 bis operations. These are similar to the Result Codes associated with A T Command mode operation. The V .25 bis responses [...]

179 APPENDIX G: V .25bis Operation Enable/Disable V .25bis Mode ($V) Command The function of the $V command is to select the V .25 bis mode in asynchronous mode. (Synchronous mode is set up with switches. For example, the modem could be in A T command mode, ( A T$V1 ), and if synchronous mode is enabled with A T Command mode enabled, then V .25 bis[...]

180 SERIES II INTELLIGENT DA T A/F AX MODEMS Dial Phone Number Pro vided (CRN) Command The CRN command permits the dialing of the phone number immedi- ately following it (from the command line). It is similar to the D com- mand of the A T command set, except that the number is first checked against the Delayed Number and Forbidden Number list. If p[...]

181 APPENDIX G: V .25bis Operation Listing Delay ed Phone Number s (RLD) Command When a phone number is dialed by a CRN command and a connection is not made, the number is entered in the modem's V .25 bis Delayed Number list along with the number of retry attempts. Any further dialing attempts will be delayed some amount of time (determined by[...]

182 SERIES II INTELLIGENT DA T A/F AX MODEMS command or simply have your modem answer the call immediately without waiting the regulation time before answering). DTR Dialing ($D) Command DTR Dialing is an alternate method of causing the Series II Modem to automatically dial a number . Data T erminal Ready (DTR) is a signal that comes into the modem[...]

183 APPENDIX G: V .25bis Operation ITU V .25bis Country Specific Information Due to the flexibility of the V .25bis standard, each countr y may establish specific regulations governing the way operations are handled. Here are details about how each country's specific regulations can affect the operation of V .25bis in modems that the Series II[...]

184 SERIES II INTELLIGENT DA T A/F AX MODEMS 2. Switzerland a) Command/Indication modification 1. Modem must remain on-hook for 5 seconds after disconnect 2. Modem must remain on-hook for 5 minutes after 4 consecutive failed calls 3. If modem must remain on-hook, then it is “paused” 4. If the modem is paused and a call is attempted a PA U indic[...]

185 APPENDIX G: V .25bis Operation dialing in A T mode. If dialing is not possible then NO CARRIER is the response. c) Auto-Answer behavior 1. Auto-Answer in 5 seconds if no DIC 4. France a) Command/Indication modification (none) b)Delay and Forbidden list behavior 1. 2 min. delay after 1st call, 4 after 2nd, 6 after 3rd, etc. 2. After 5 retries, t[...]

186 SERIES II INTELLIGENT DA T A/F AX MODEMS 6. Singapore a) Command/indication modifications 1. Dialing digit ‘=’ means wait for dialtone (acts the same as ‘:’ in dialing string) b)Delay and Forbidden list behavior 1. 5 retries without delay 2. 2 minute delay between next 4 retries 3. After 9 retries the number is put on the forbidden list[...]

187 APPENDIX H: Series II modem cables Appendix H - Series II Modem Cables These cables connect your Series II Modem to the serial port of your terminal or computer serial port. Figure I-1. RS232 Cable (IBM PC) Figure I-2. Mac Cable 3 5 1 2 TD RCV Handshake Out Handshake In 4 8 GND GND 2 3 4 5 TD RCV RTS CTS 7 GND 2 3 4 5 6 7 8 20 22 TD RD RTS CTS [...]

188 SERIES II INTELLIGENT DA T A/F AX MODEMS The following cables are for 2-wire and 4-wire leased line connections using screw connectors. Figure I-3. T wo Wire Leased Line Connection Figure I-4. Four Wire Leased Line Connection (336+ [MD1640A] Only) 3 4 2 5 Red Green Y ellow Black T ransmit Pair Receive Pair 1 2 3 4 5 6 Red (Tip) Green (Ring) RJ-[...]

189 APPENDIX I: RS232C Interface Specifications Appendix I - RS232C Interface Specifications The Series II Modem's RS232C inter face circuits have been designed to meet the electrical specifications given in EIA (Electronic Industries Association) RS232C standards. All signals generated by the modem are approximately 10 volts when measured acr[...]

190 SERIES II INTELLIGENT DA T A/F AX MODEMS 22 RI CE 125 DCE Ring Indicator 24 XTC DA 113 DTE External T ransmit Clock 25 OOS CN 142 DTE T erminal Busy ** Pin 9 need not be present in your RS232C cable *** Pins 15 and 17 are necessary only for synchronous operation **** Also known as DTR (Data T erminal Ready) The computer or terminal should be su[...]

191 APPENDIX I: RS232C Interface Specifications Clear T o Send - Pin 5, CTS (CB) Direction: from modem The CTS line indicates to the terminal that the Series II Modem will transmit any data present on the T ransmit Data line (pin 2). Data Set Ready - Pin 6, DSR (CC) Direction: from modem DSR On indicates that the Series II Modem is in the data mode[...]

192 SERIES II INTELLIGENT DA T A/F AX MODEMS T ransmit Clock - Pin 15, TC (DB) Direction: from modem The TC signal is provided only when the Series II Modem is used in the synchronous mode. The clock is a square wave and is used to provide the computer or terminal with timing information for its T ransmit Data circuit (pin 2). This clock will be pr[...]

193 APPENDIX I: RS232C Interface Specifications turned off at the conclusion of the log off procedure, which forces the modem to disconnect, enabling it to receive another call. In non auto answer applications it is advisable to leave DTR on using the modem's DIP-switch option. This is the standard factory setting. An alternative is to provide[...]

194 SERIES II INTELLIGENT DA T A/F AX MODEMS Appendix J - Regulatory Information FCC and IC EMI/RFI Statements When correctly installed and maintained, the modem will present no hazard to the user . When correctly installed the modem will be connected to the PSTN or a PW and to a Data T erminal Equipment (DTE), whose modem connections comply with I[...]

195 APPENDIX J: Regulatory Information FCC P art 68 Regulations for T elephone-Line Interconnection 1. This equipment complies with Part 68 of the Federal Communica- tions Commission (FCC) rules. On the outside sur face of this equipment is a label that contains, among other information, the FCC registration number and ringer equivalence number (RE[...]

196 SERIES II INTELLIGENT DA T A/F AX MODEMS 6. If trouble is experienced with this equipment (the model of which is indicated below) please contact Black Box at the address shown below for details of how to have repairs made. If the trouble is causing harm to the telephone network, the telephone company may request you remove the equipment from th[...]

197 APPENDIX J: Regulatory Information Canadian Limitations Notice Notice: The ringer equivalence number (REN) assigned to each terminal device provides an indication of the maximum number of terminals allowed to be connected to a telephone inter face. The termination of a inter face may consist of any combination of devices subject only to the req[...]

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