Multi-Tech Systems DT102 manuale d’uso

Data/V oice/Fax Concentrator Desktop Models: DT101, DT102, DT101/xx, DT102/xx Rack-Mount Models: DT101R, DT102R, DT101R/xx, DT102R/xx Owner ’ s Manual[...]

Owner ’s Manual 82052704 Revision E DataT alker™ Series Desktop Models: DT101, DT101/xx, DT102, DT102/xx Rack-Mount Models: DT101R, DT101R/xx, DT102R, DT102R/xx This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-T ech Systems, Inc. All rights reserved. Copyright © 1997, by Multi-T[...]

Contents Chapter 1 - Introduction and Description 1.1 Introduction ................................................................................................................ .................... 8 1.2 About This Manual ........................................................................................................... .............. 8 [...]

Chapter 4 - Unpacking and Configuration 4.1 Introduction ................................................................................................................ .................. 44 4.2 Unpacking ................................................................................................................................... 44 4.3 Confi[...]

Appendixes Appendix A - ASCII Conversion Chart ............................................................................................ ......... 1 18 Appendix B - RS-232C Interface Specification ................................................................................... ..... 1 19 Appendix C - Cabling Diagrams .........................[...]

[...]

Chapter 1 - Introduction and Description[...]

8 DataT alker Owner ’ s Manual 1.1 Introduction Congratulations! Y our new Multi-T ech DataT alker™ is one of the finest data/voice/fax concentrators on the market today . The DataT alker optimizes wide area network (WAN) links by simultaneously transmitting voice and/or fax with LAN or computer data over a single phone line, digital service, o[...]

9 Chapter 1 - Introduction and Description Chapter 4 - Unpacking and Configuration This chapter describes the contents of the shipping container; provides a customizeable configuration summary; discusses configuration considerations for the data port, voice/fax channel, and the composite link; and provides a detailed configuration procedure. The co[...]

10 DataT alker Owner ’ s Manual 1.3 Product Description The DataT alker series of multiplexers has a single synchronous or asynchronous data channel, a command port, one or two voice/fax channels, and a single synchronous composite link with an internal data service unit (DSU), modem, ISDN terminal adapter , or an external synchronous link device[...]

11 Chapter 1 - Introduction and Description communications software to the DA T A/COMMAND connector on the back panel and configure the data channel for the type of data that is going to be transferred. For example, if an asynchronous device is going to be connected to the data channel, you must set the speed of the channel, the word length, the nu[...]

12 DataT alker Owner ’ s Manual 1.4 System Features 1.4.1 V oice/Fax The voice/fax feature of the DataT alker allows you to establish voice or fax traf fic on top of your normal data communications over a composite link, saving the expense of extra communications lines. The DataT alker provides three types of telephone circuits (FXS, FXO, and E&a[...]

13 Chapter 1 - Introduction and Description 1.4.6 Diagnostics Diagnostics in a network are of considerable importance. That is why the DataT alker is equipped with several diagnostic modes that will test every aspect of the network. The diagnostics include easy-to-execute tests for the data channel, voice/fax channel, composite link, and various co[...]

14 DataT alker Owner ’ s Manual 1.5 FCC Regulations for T elephone Line Interconnection 1. This equipment complies with Part 68 of the FCC rules. On the outside surface of this equipment is a label that contains, among other information, the FCC registration number and ringer equivalence number (REN). If requested, this information must be provid[...]

15 Chapter 1 - Introduction and Description 1.6 Canadian Limitations Notice Notice: The Canadian Department of Communications label identifies certificated equipment. This certification means that the equipment meets certain telecommunications network protective, operational and safety requirements. The department does not guarantee the equipment w[...]

16 DataT alker Owner ’ s Manual 1.7 Specifications 1.7.1 Async Data Channel Number of Channels One Maximum Speed 1 15,200 bps Channel Speed All standard speeds from 300 bps to 1 15,200 bps Data Format 5, 6, 7, or 8 data bits, with 1, 1.5, or 2 stop bits Parity Odd, even, or none Local Echo On or off selectable Flow Control XON/XOFF , CTS, or HP E[...]

17 Chapter 1 - Introduction and Description 1.7.5 Internal Modem Modulation ITU-T V .34; A T&T V .32 terbo; ITU-T V .32bis, V .32, V .22bis, V .22; Bell 212A and 103 (North America) or V .23 and V .21 (international) Speeds 300 bps to 33.6K bps Commands Fully A T command compatible Usage Synchronous full duplex over unconditioned 2-wire or 4-wi[...]

18 DataT alker Owner ’ s Manual 1.7.9 Electrical/Physical Desktop Models: Power Supply Input 100 to 250 V AC Power Supply Output +5v@5A, +12v@1A, -12v@0.5A Power Consumption 20 watts Dimensions 2.3 " high x 9 " wide x 12.8 " deep 5.7 cm high x 22.9 cm wide x 32.7 cm deep Weight 7 pounds (3.2 kg) Rack-mount Models: Power Supply Inpu[...]

Chapter 2 - Configuration[...]

20 DataT alker Owner ’ s Manual 2.1 Introduction The Multi-T ech DataT alker is available in both desktop (DT10x) and rack-mount (DT10xR) versions. The desktop version is designed for home of fice applications. It is mounted in a horizontal cabinet and has an external power supply , a power switch, an originate switch, and a switch that allows yo[...]

21 Chapter 2 - Configuration 2.2 Configuration 1 - Dial-Up Link Configuration 1 is a dial-up link using a pair of DataT alkers to provide data communications between a home of fice PC and the main of fice host computer and telephone services through the main of fice telephone system. The data and telephone services are provided using a single line [...]

22 DataT alker Owner ’ s Manual When you established communication, the Main Menu appeared. From the Main Menu you can configure the unit, display statistics, reset various functions within the DataT alker , and run diagnostic tests: Main Menu 1 - Conf igurations 2 - Statistics 3 - Reset Options 4 - Diagnostics 5 - Exit Command Mode 6 - QUICK SET[...]

23 Chapter 2 - Configuration Enter S and press ENTER to store all configurations for the main of fice. Set up the home office unit the same way , except that you should switch the local and remote interface types (FXS for the local interface and FXO for the remote interface). After you select the home of fice options, enter S to store all configura[...]

24 DataT alker Owner ’ s Manual T o connect the home office DataT alker to its PC, connect an RS232C cable between the DA T A/ COMMAND connector on the DataT alker and an async port on the PC (typically , COM1 or COM2). Place DIP switch position 3 on the side of the DataT alker in the OPEN (up) position to enable the data channel. T o connect you[...]

25 Chapter 2 - Configuration 2.3 Configuration 2 - MMH900 Series with V oice/Fax Configuration 2 adds voice capability to an existing data-only network using the same composite link. The example shown in Figure 2-2 had an existing data-only network consisting of a MultiMux MMH904C multiplexer connected to a host computer at the local site and a sec[...]

26 DataT alker Owner ’ s Manual A series of configuration menus provides simple and complete configuration information for each aspect of the DataT alker . From the Main Menu, you can access menus to configure the unit, display statistics, reset various functions within the DataT alker , and run diagnostic tests: Main Menu 1 - Conf igurations 2 -[...]

27 Chapter 2 - Configuration The data port in this configuration will be set up for synchronous operation. T o configure the data port for sync operation, enter 1 (Aysnc/Sync) option and change the default Async to Sync. The data port configuration menu displays the sync parameters. Data Port Configuration 1 - Async/Sync: Sync 2 - Speed: 19200 3 - [...]

28 DataT alker Owner ’ s Manual 2.4 Configuration 3 - LAN to LAN Configuration 3 is an example of a pair of DataT alkers providing the link between two LANs with the added benefit of voice or fax traffic over the same composite link. Bridging the LANs over a single high speed composite link expands the capacity of each LAN. The LAN bridge on each[...]

29 Chapter 2 - Configuration T o configure the DataT alker , enter 1 and press ENTER. The Configurations menu is displayed. From this menu you can configure the data port, voice/fax channel(s), or the composite link. Y ou can also select various factory defaults and store your current configuration: Configurations 1 - Data Port Configuration 2 - Vo[...]

30 DataT alker Owner ’ s Manual Data Port Configuration 1 - Async/Sync: Sync 2 - Speed: 19200 3 - Clocking: Internal 4 - Idle Condition: Flags 5 - NRZ/NRZI Encoding: NRZ 6 - CRC Preset: All 1s 7 - Inter-frame Timer: Off S - Store All Configuations M - Main Menu P - Previous Menu Selection : _ Press P to return to the Data Port Configuration menu,[...]

31 Chapter 2 - Configuration The DataT alker knows the type of link device being used by the way a DIP switch is set or by detecting a device installed on the main PC board. In this configuration, a 56K bps internal DSU is used for the composite link device, so when the Composite Link Settings menu is displayed, it is for a DSU: Composite Link Sett[...]

32 DataT alker Owner ’ s Manual 2.5 Configuration 4 - PBX to PBX Configuration 4 is a data/voice/fax configuration that uses two DataT alkers to link two PBXs. Using a single ISDN composite link, they connect a minicomputer and a PBX E&M trunk at the local site to a remote PC on the data part of the network and a second PBX E&M trunk on t[...]

33 Chapter 2 - Configuration The Configurations menu is displayed. From this menu you can configure the data port, voice/fax channel(s), or the composite link. Y ou can also select various factory defaults and store your current configuration. Configurations 1 - Data Port Configuration 2 - Voice/Fax Channel(s) Configuration 3 - Composite Link Confi[...]

34 DataT alker Owner ’ s Manual Composite Link Settings - Inter nal TA 1 - On-Line XMT Rate: 128000 2 - Configure TA 3 - DOD/DOI: Off S - Store All Conf igurations M - Main Menu P - Previous Menu Selection : _ The terminal adapter menu displays the transmit rate and option 2 allows you to configure the terminal adapter . Use option 2 (Configure T[...]

Chapter 3 - Front and Rear Panel Descriptions[...]

36 DataT alker Owner ’ s Manual 3.1 Introduction This chapter describes the DataT alker front and back panels and switches. The front panel contains LED indicators for the data channel device, voice/fax channels, and the composite link. It also contains one or two switches, depending on whether it is a desktop or rack version. The back panel cont[...]

37 Chapter 3 - Front and Rear Panel Descriptions V oice/Fax Channels FXS (Foreign Exchange Station) This indicator lights when the voice/fax channel is configured for FXS operation. FXO (Foreign Exchange Office) This indicator lights when the voice/fax channel is configured for FXO operation. E&M (E&M Operation) This indicator lights when t[...]

38 DataT alker Owner ’ s Manual 28.8/56 (28.8K bps/56K bps) This composite link speed indicator displays the baud rate of the internal modem (28.8) or DSU (56K). The type of composite link device is indicated by which of the EXT , MDM, DSU, or T A indicators lights. This indicator lights steadily when a DSU is installed. It has three states when [...]

39 Chapter 3 - Front and Rear Panel Descriptions 3.3 Connectors The cable connections for the DataT alker are made at the back panel. Refer to Chapter 5 for cabling installation procedures. Refer to Appendix C for cabling diagrams. The DataT alker back panel is shown in Figure 3-2. MODEM DSU/T A DIAL-UP LEASED DIGITAL VOICE/FAX CHANNEL 1 FXO FXS EX[...]

40 DataT alker Owner ’ s Manual 3.3.7 VOICE/F AX CHANNEL 1 E&M Connector Use the E&M connector to connect the DataT alker to the E&M connector on an analog PBX trunk when linking two PBXs together . The E&M connector is an RJ-48 jack. This connector is available on voice/fax channel 1 only . 3.3.8 DSU/T A DIGIT AL Connector Use th[...]

41 Chapter 3 - Front and Rear Panel Descriptions 3.4 Switches and Shunts DataT alker switches include one or two switches on the front panel, a power switch on the back panel of the desktop version, and a DIP switch and shunt on the main printed circuit board (Figures 3-3 and 3-4). 1 2 3 4 5 6 RS-232 Shunt V .35 Shunt DIP Switch Originate Switch 10[...]

42 DataT alker Owner ’ s Manual 3.4.3 DIP Switch The eight-position DIP switch is accessible through a cutout in the left side of the DataT alker series enclosure; its location is shown in Figures 3-3 and 3-4. Position 1: Not used Position 2 : OPEN (up) Internal composite link device selected Closed (down) External composite link device selected [...]

Chapter 4 - Unpacking and Configuration[...]

44 DataT alker Owner ’ s Manual 4.1 Introduction This chapter describes what to expect in your DataT alker shipping box, then describes how to configure the DataT alker . It provides a helpful configuration summary to give you a snapshot of how your unit is set up; summarizes options you should consider when configuring the data channel, router p[...]

45 Chapter 4 - Unpacking and Configuration 4.3 Configuration Summary The following chart shows possible configurations for your DataT alker . Use it as a snapshot of how your unit is set up. Circle the parameters that apply to your unit. For example, if your unit has the data channel set up for asynchronous communications, circle “Async.” Data [...]

46 DataT alker Owner ’ s Manual 4.5 V oice/Fax Channel Configuration Considerations When configuring the voice/fax channels on your DataT alker , the first question you should ask yourself is what the voice/fax port is connected to. The possibilities are an in-plant telephone switch, or PBX, (Private Branch eXchange); a PBX E&M trunk; or a te[...]

47 Chapter 4 - Unpacking and Configuration 4.6 Composite Link Configuration Considerations The composite link configuration depends on the type of device used as the composite link device. The DataT alker knows the type of composite link device being used by the setting of a DIP switch and the sensing of conditions within the unit. In most cases yo[...]

48 DataT alker Owner ’ s Manual 4.7 Configuration Procedure Table 4-1. Configuration Procedure Step Procedure 1 Review the configuration considerations for the data port, the voice/fax channel, and the composite link in the previous sections. 2 Place DIP switch position 3 in the down (closed) position to enable the command port. MODEM DSU/TA DIAL[...]

49 Chapter 4 - Unpacking and Configuration 6 Apply power to the terminal or PC. Run your PC communications software in terminal mode. Press the ENTER key twice to establish communications with the DataT alker; the Main Menu then appears: Main Menu 1 - Conf igurations 2 - Statistics 3 - Reset Options 4 - Diagnostics 5 - Exit Command Mode 6 - QUICK S[...]

50 DataT alker Owner ’ s Manual 9 Configure the data port to meet the conditions of your installation by selecting option numbers from the menus. Refer to Chapter 6 for a description of the Data Port Configuration menu options. For example, if you are setting up the data port as a sync data channel, enter number 1 and press ENTER. The Data Port A[...]

51 Chapter 4 - Unpacking and Configuration 12 Configure voice/fax channel 1 to meet the conditions of your installation by selecting option numbers from the menus. • Accept the defaults for the first five options. • Select the local interface type (option 6). • Select the remote interface type (option 1 1). The remote interface option does no[...]

52 DataT alker Owner ’ s Manual • Configure the internal MMH2834 modem to meet the conditions of your installation by selecting option numbers from the menus. • If you are setting up DTR dialing, select option 1, Enter A T Commands to 2834. W ait 5 seconds and then enter the following commands (press ENTER after each command): A TDT [Number M[...]

53 Chapter 4 - Unpacking and Configuration T o verify and/or change the terminal adapter ’ s configuration, select option 2, wait 5 seconds, and enter A T!V to access the terminal adapter ’s configuration menu. Refer to the ISDN T erminal Adapter Owner ’ s Manual for configuration commands. T o exit the terminal adapter ’s configuration men[...]

54 DataT alker Owner ’ s Manual[...]

Chapter 5 - Installation[...]

56 DataT alker Owner ’ s Manual 5.1 Introduction This chapter describes how to connect the DataT alker to your system (T able 5-1) and how to move the RS232/V .35 shunt when a V .35 interface is used (T able 5-2). Then it describes how to power on your DataT alker , check that the unit is cabled and configured correctly , and what to do if you ru[...]

57 Chapter 5 - Installation MMH2834 Modem, Leased Line Connect the RJ-1 1 phone cable supplied with the DataT alker from the internal modem LEASED connector on the back panel to the leased line connection. MODEM DSU/TA DIAL-UP LEASED DIGITAL VOICE/FAX CHANNEL 1 FXO FXS EXTERNAL COMPOSITE DATA/COMMAND RS232C/V.35 E&M INTERNAL COMPOSITE POWER GND[...]

58 DataT alker Owner ’ s Manual External Modem, DSU, or ISDN T erminal Adapter 3 If the external device has an RS232 interface, connect the composite link cable supplied with the DataT alker from the EXTERNAL COMPOSITE RS232C/V .35 connector on the back panel to the external device. MODEM DSU/TA DIAL-UP LEASED DIGITAL VOICE/FAX CHANNEL 1 FXO FXS [...]

59 Chapter 5 - Installation If you are connecting the voice/fax channel to the station side of a PBX, connect an RJ-1 1 phone cable from the VOICE/FAX CHANNEL FXO connector on the DataT alker to the station side of the PBX. Refer to the PBX manual for the station side connection. MODEM DSU/TA DIAL-UP LEASED DIGITAL VOICE/FAX CHANNEL 1 FXO FXS EXTER[...]

60 DataT alker Owner ’ s Manual 5.3 V .35 Shunt Table 5-2. V.35 Shunt Procedure Step Procedure 1 Desktop version: Unplug the power supply from the back of the unit. Rack version: Remove the unit from the RackT alker rack. Go to step 4. 2 Desktop version only: T urn the unit upside down and remove the two cabinet mounting screws from the middle of[...]

61 Chapter 5 - Installation 5.4 Power-On and Checkout The desktop and rack-mounted versions of the DataT alker differ in how power is applied. The desktop version has a power switch that you must turn on. The rack version has no power switch; you apply power by inserting it into a powered-up rack. It is always on as long as the rack is powered up. [...]

62 DataT alker Owner ’ s Manual 6 V erify that the voice/fax channel is connected at the remote site. One of the following conditions will apply depending on how your local and remote sites are set up: • If the local voice/fax channel is connected to a telephone switch in your facility (FXO connection) and the remote site has just a telephone ([...]

63 Chapter 5 - Installation V oice/Fax Channel If the voice/fax channel is not communicating with the remote site or the remote site cannot communicate with you, check the following items: • The channel configuration does not match how the channel is cabled. V erify that the channel configuration and cabling match. • The remote DataT alker does[...]

64 DataT alker Owner ’ s Manual[...]

Chapter 6 - Menus[...]

66 DataT alker Owner ’ s Manual 6.1 Introduction The menu system for the DataT alker provides a set of user-friendly configuration menus that are accessible from a main menu. The Main Menu contains five options that allow you to configure your DataT alker , display statistics, reset options, run diagnostic tests, and exit the command mode. Main M[...]

67 Chapter 6 - Menus 6.2.1 Data Port Configuration The Data Port Configuration menu allows you to configure the data channel for either asynchronous or synchronous operation, depending on the type of device connected to the channel. If the port is configured for synchronous operation, refer to Sync Data Port Configuration. When the port is configur[...]

68 DataT alker Owner ’ s Manual The Echo option enables data entered on the channel device keyboard to be returned to the channel device monitor . The purpose of this option is so that an operator will not experience undue delays in seeing entered data appear on their monitor . The default condition for the echo option is off. The Pacing option c[...]

69 Chapter 6 - Menus 6.2.2 Sync Data Port Configuration The Data Port Configuration menu allows you to configure the data channel for either asynchronous or synchronous operation, depending on the type of device connected to the channel. When the port is configured for synchronous operation, the following Data Port Configuration menu displays the d[...]

70 DataT alker Owner ’ s Manual 6.2.3 V oice/Fax Channel Configuration The V oice/Fax Channel Configuration menu is displayed only if the second voice/fax channel card is installed in the DataT alker . If only one voice/fax channel is installed in the DataT alker , this menu does not appear . If you select the V oice/Fax Channel(s) Configuration [...]

71 Chapter 6 - Menus The output level attentuation needs to be set at the DataT alker that is receiving (hearing). Increasing the output level gain at the transmitting DataT alker will have no affect on the loudness heard by the person at the receiving DataT alker: T alk OL Sounds 2db Increase Louder 2db T alk Sounds OL 2db Louder Increase 2db PSTN[...]

72 DataT alker Owner ’ s Manual The Local Interface T ype option configures the local voice/fax channel interface. The options are for an FXS, FXO, or E&M interface. When the voice/fax channel is connected to a telephone set or fax machine, the local interface type must be FXS. When the voice/fax channel is connected to the station side of a [...]

73 Chapter 6 - Menus 6.2.4 Composite Link Configuration The Composite Link Configuration menu that is displayed depends on whether an internal or external device is installed as well as on the position of DIP switch position 2. If DIP switch position 2 is in the up (OPEN) position and an internal MMH2834 modem installed, the Composite Link Settings[...]

74 DataT alker Owner ’ s Manual The Dial/Leased option selects the type of connection to the telephone company . If the data line provided by the telephone company is a dial-up line, then you must select the dial option. The options are Dial and Leased with the default being Dial. The 2 or 4 Wire option selects how the MMH2834 modem is connected [...]

75 Chapter 6 - Menus Composite Link Settings - Internal 56K DSU The Composite Link Settings - Internal DSU menu allows you to configure the composite link for a DSU. The default parameters for an internal DSU are displayed in the following menu: Composite Link Settings - Internal DSU 1 - Speed: 56k 2 - Clocking: DDS S - Store All Configurations M -[...]

76 DataT alker Owner ’ s Manual The Dial On Demand (DOD)/Disconnect On Inactivity (DOI) option drops DTR to the terminal adapter to disconnect if the inactivity timer has expired and raises DTR to reconnect if the voice/ fax or data channel goes active. When this option is turned ON, a new menu is displayed. The default is to have the DOD/DOI opt[...]

77 Chapter 6 - Menus Composite Link Settings - External Device The Composite Link Settings - External Device menu allows you to configure the composite link for an external device. The default parameters for an external device are displayed in the following menu: Composite Link Settings -External Device 1 - On-Line XMT Rate: 56000 2 - Clocking: Ext[...]

78 DataT alker Owner ’ s Manual 6.3 Statistics The Statistics menu allows you display or clear the composite link statistics, or return to the previous menu or to the Main Menu. Statistics 1 - View Composite Link Statistics 2 - Clear Composite Link Statistics M - Main Menu P - Previous Menu Selection : _ T o display or clear the composite link st[...]

79 Chapter 6 - Menus 6.4 Reset Options The Reset Options menu allows you to reset the unit, the data and voice/fax channels, each voice/fax channel, or just the data channel. Reset Options 1 - Reset Unit 2 - Reset Data and V oice/F ax Channels 3 - Reset V oice/F ax Channel 1 4 - Reset V oice/F ax Channel 2 5 - Reset Data Channel M - Main Menu P - P[...]

80 DataT alker Owner ’ s Manual 6.5.1 Loop T ests The Loop T ests menu provides either a voice loopback or a composite link loopback that depends on the type of link device. Loop T ests 1 - V oice Loopback 2 - Composite Link Loopback M - Main Menu P - Previous Menu Selection : _ The following messages are displayed, depending on the loopback test[...]

81 Chapter 6 - Menus 6.6 Configure Remote Unit Configuration menu option 5 is dependent on the position of DIP switch SW -5. If DIP switch SW - 5 is in the Open (Up) position (MMV8/16/32), the configuration menu allows for the DataT alker to set parameters to communicate with with other MultiMux products (i.e., MMV800, MMV1600, or MMV3200 series). [...]

82 DataT alker Owner ’ s Manual The Unit Source Node option specifies the node number of the local node. This number has to be unique and any number from 0 to 9. Remember that the node number will be used by other nodes. The Data Destination Node option specifies the node number of the remote node. This number has to be unique and any number from[...]

83 Chapter 6 - Menus Table 6-1. Main Office Installation Step Procedure 1 V oice/Fax - Plug an analog PBX extension into the FXO jack on the back of the Data T alker . RJ1 1 Phone Cable VOICE/F AX CHANNEL 1 FXO Connector DAT A/COMMAND EXTERNAL COMPOSITE RS232C/V .35 0 1 DIAL-UP LEASED DIGITAL FXS FXO MODEM DSU VOICE/FAX CHANNEL 1 VOICE/FAX CHANNEL [...]

84 DataT alker Owner ’ s Manual 3 Data Port - Plug the host computer into the Data/Command port and put dip switch 3 up (located on the side of the Data T alker). MODEM DSU/TA DIAL-UP LEASED DIGITAL VOICE/FAX CHANNEL 1 FXO FXS EXTERNAL COMPOSITE DATA/COMMAND RS232C/V.35 E&M INTERNAL COMPOSITE POWER GND DA T A/COMMAND Connector RS232 Cable Con[...]

85 Chapter 6 - Menus Table 6-2. Home Office Installation Step Procedure 1 V oice/Fax - Plug your telephone into the FXS jack on the back of the Data T alker . MODEM DSU/TA DIAL-UP LEASED DIGITAL VOICE/FAX CHANNEL 1 FXO FXS EXTERNAL COMPOSITE DATA/COMMAND RS232C/V.35 E&M INTERNAL COMPOSITE POWER GND VOICE/FAX CHANNEL 2 RJ-1 1 Phone Cable VOICE/F[...]

86 DataT alker Owner ’ s Manual 3 Data Port - Plug your PC into the Data/Command port and put dip switch 3 up to exit command mode and enable data mode (located on the side of the Data T alker). MODEM DSU/TA DIAL-UP LEASED DIGITAL VOICE/FAX CHANNEL 1 FXO FXS EXTERNAL COMPOSITE DAT A/COMMAND RS232C/V.35 E&M INTERNAL COMPOSITE POWER GND DA T A/[...]

Chapter 7 - T roubleshooting[...]

88 DataT alker Owner ’ s Manual 7.1 Introduction The DataT alker is designed to be easy to operate and maintain. The procedures in this chapter will help isolate any problem to a specific network component, at which point you will be instructed to call the appropriate personnel or execute commands to adjust operating conditions. Y ou are not expe[...]

89 Chapter 7 - T roubleshooting 7.3 T est Cables If you are using the DataT alker internal DSU or MMH2834 modem, there are three test cables you can use to check out your system. T wo DataT alker back-to-back test cables allow you to connect your two DataT alkers locally before installing them on either end of a phone line. There is also a composit[...]

90 DataT alker Owner ’ s Manual 7.4 T roubleshooting Guide This troubleshooting guide is designed to help you pinpoint the cause of your problem and correct it as quickly as possible. Because equipment from different manufacturers is typically involved in multiplexer networks, you may encounter “finger pointing” as to who is at fault. Who is [...]

91 Chapter 7 - T roubleshooting Table 7-1. Command Port Troubleshooting Problem Command port device not communication with DataT alker Possible Causes Communications software not installed on command port PC Command port not enabled Bad cable or cable connection Solution 1. Install communications software on command port PC (refer to communcations [...]

DataT alker Owner ’ s Manual 92 Table 7-2. Composite Link Troubleshooting Internal DSU Problem Composite link down with CD, CTS, XMT , RD and RCV LEDs on Flashing RXT LED Possible Causes Composite link not configured correctly High error rate on communication line DSU clocking configured incorrectly Solution 1. V erify DSU configuration. See Comp[...]

93 Chapter 7 - T roubleshooting Internal ISDN Terminal Adapter Problem Composite link down with CTS, XMT and RD LEDs on Composite link down with CD, CTS, XMT , RCV and RD LEDs on Flashing RXT LED Possible Causes T erminal adapter not communicating with ISDN line Faulty communication line Composite link not configured correctly High error rate on co[...]

DataT alker Owner ’ s Manual 94 Internal MMH2834 Modem Problem Composite link down with CTS, XMT , and RD LEDs on Composite link down with CD, CTS, XMT , RCV and RD LEDs on Flashing RXT LED Possible Causes MMH2834 modem not communicating with communications line Faulty communications line Composite link not configured correctly High error rate on[...]

95 Chapter 7 - T roubleshooting External Composite Link Device Problem Composite link down with CTS, XMT and RD LEDs on Composite link down with CD, CTS, XMT , RCV and RD LEDs on Flashing RXT LED Composite link down with CD, CTS and RD LEDs on Possible Causes Composite link not communicating with communications line Faulty communications line Compo[...]

DataT alker Owner ’ s Manual 96 Table 7-3 Data Channel Troubleshooting Problem Async Data Channel Channel Device not communicating with DataT alker; composite link up with CD,, CTS, XMT , RCV and RD LEDs on Async Data Channel device losing data Sync Data Channel Channel Device not communicating with DataT alker; composite link up with CD,, CTS, X[...]

97 Chapter 7 - T roubleshooting Table 7-4. Voice/Fax Troubleshooting Problem V olume levels not sufficient on local voice/fax channel Local telephone goes off-hook and remote telephone does not ring (FXS to FXS configuration) Data throughput slows excessively when voice/fax channel is active FXO to FXO configuration - local telephone does not ring [...]

DataT alker Owner ’ s Manual 98 Table 7-4. Voice/Fax Troubleshooting (continued) Problem V oice conversation or fax traffic becomes erratic after changing the remote interface type No communication on voice/fax channel Possible Causes Remote connection is different from remote interface type Composite link down Phone cord for the voice or fax mac[...]

99 Chapter 7 - T roubleshooting 7.5 Composite Link Settings - Internal DSU Table 7-5. Composite Link Settings - Internal DSU Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port. 2 Connect a terminal or PC running communications software to the DA T A/COMMAND connector on the back panel of the Data[...]

100 DataT alker Owner ’ s Manual 7.6 Composite Link Settings - Internal ISDN T erminal Adapter Table 7-6. Composite Link Settings - Internal ISDN Terminal Adapter Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port. 2 Connect a terminal or PC running communications software to the DA T A/COMMAND[...]

101 Chapter 7 - T roubleshooting 7.7 Composite Link Settings - Internal Modem Table 7-7. Composite Link Settings - Internal MMH2834 Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port. 2 Connect a terminal or PC running communications software to the DA T A/COMMAND connector on the back panel of t[...]

102 DataT alker Owner ’ s Manual 7.8 Composite Link Settings - External Device Table 7-8. Composite Link Settings - External Device Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port. 2 Connect a terminal or PC running communications software to the DA T A/COMMAND connector on the back panel of[...]

103 Chapter 7 - T roubleshooting 7.9 Composite Link Statistics Table 7-9. Composite Link Statistics Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port. 2 Connect a terminal or PC running communications software to the DA T A/COMMAND connector on the back panel of the DataT alker . Note: Any cable[...]

104 DataT alker Owner ’ s Manual 7 Comparing Data Blocks T ransmitted with Data Blocks Retransmitted (the number of retransmits needed to get the data through) can indicate a line problem. Comparing Data Blocks Received with Receive Block Errors can indicate the same problem from the other end of the link. Numbers that you might encounter could b[...]

105 Chapter 7 - T roubleshooting 7.10 Data Port Configuration Table 7-10. Data Port Configuration Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port. 2 Connect a terminal or PC running communications software to the DA T A/COMMAND connector on the back panel of the DataT alker . Note: Any cables [...]

106 DataT alker Owner ’ s Manual 7 If the data port is set up as an asynchronous data channel, you should verify all 12 options. Data Port Configuration 1 - Async/Sync: Sync 2 - Speed: 19200 3 - Clocking: Internal 4 - Idle Condition: Flags 5 - NRZ/NRZI Encoding: NRZ 6 - CRC Preset: All 1s 7 - Inter-frame Timer: Off S - Store All Configuations M -[...]

107 Chapter 7 - T roubleshooting 7.1 1 V oice/Fax Channel Configuration Table 7-11. Voice/Fax Channel Configuration Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port. 2 Connect a terminal or PC running communications software to the DA T A/COMMAND connector on the back panel of the DataT alker .[...]

108 DataT alker Owner ’ s Manual Voice/Fax Channel 1 Configuration 1 - Destination Channel : 1 2 - Digitizing Rate : 9600 3 - Output Level Atten. : 12 4 - Input Level Gain : 03 5 - Silence Suppression : Off 6 - Local Interface Type : FXS 7 - Ground/Loop Start (FXS) : Loop 8 - 2 or 4 Wire (E&M) : N/A 9 - Dialtone/Wink (E&M) : N/A 10 - Wink[...]

109 Chapter 7 - T roubleshooting 7.12 Diagnostic T esting Table 7-12. Diagnostic Testing Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port. 2 Connect a terminal or PC running communications software to the DA T A/COMMAND connector on the back panel of the DataT alker . Note: Any cables connected[...]

110 DataT alker Owner ’ s Manual[...]

Chapter 8 - W arranty , Service and T ech Support[...]

112 DataT alker Owner ’ s Manual 8.1 Introduction This chapter begins with your DataT alker ’s 2-year warranty . Read carefully the next section, “T ech Support,” if you have questions about or problems with your DataT alker . It includes the technical support telephone numbers, space for recording your product information, and an explanati[...]

113 Chapter 8 - W arranty , Service and T ech Support 8.3 T ech Support Multi-T ech has an excellent staff of technical support personnel available to help you get the most out of your Multi-T ech product. If you have any questions about the operation of this unit, call 1- 800-972-2439. Please fill out the DataT alker information form below and hav[...]

114 DataT alker Owner ’ s Manual 8.4 The Multi-T ech BBS For customers who do not have Internet access, Multi-T ech maintains a bulletin board system (BBS) that mirrors its FTP site. Information available from the BBS includes new product information, product upgrade files, and problem-solving tips. The phone number for the Multi- T ech BBS is (8[...]

115 Chapter 8 - W arranty , Service and T ech Support 6. Select a file transfer protocol by typing the indicated letter , such as Z for Zmodem (the recommended protocol). 7. If you select Zmodem, the file will transfer automatically . If you select another protocol, you may have to initiate the transfer yourself. (In most data communications progra[...]

116 DataT alker Owner ’ s Manual[...]

Appendixes[...]

118 DataT alker Owner ’ s Manual Appendix A - ASCII Conversion Chart CTRL CODE HEX DE C CODE HE X DEC CODE HEX DEC CODE H EX DEC @ NUL 00 0 SP 20 32 @ 40 64 ` 60 96 A SOH 01 1 ! 21 33 A 41 65 a 61 97 B STX 02 2 “ 22 34 B 42 66 b 62 98 C ETX 03 3 # 23 35 C 43 67 c 63 99 D EOT 04 4 $ 24 36 D 44 68 d 64 100 E ENQ 05 5 % 25 37 E 45 69 e 65 101 F AC[...]

119 Appendix B - RS-232C Interface Specification Appendix B - RS-232C Interface Specification The DataT alker's RS232C interface circuits have been designed to meet the electrical specifications given in the EIA (Electronic Industries Association) RS232C and ITU-T (International T elecommunications Union) V .24 standards. All signals generated[...]

120 DataT alker Owner ’ s Manual Appendix C - Cabling Diagrams Channel Cables DCE to Channel Cabling (with EIA pass-through) PIN NO. 1 2 3 4 5 6 7 8 20 22 25 1 2 3 4 5 6 7 8 20 22 25 To DCE Device (Data Communications Equipment, i.e., Modem) CHASSIS GROUND (AA) TRANSMIT DA T A (BA) RECEIVE DA T A (BB) REQUEST T O SEND (CA) CLEAR TO SEND (CB) DA T[...]

121 Appendix C - Cabling Diagrams Composite Link Cabling PIN NO. 1 2 3 4 5 7 8 15 17 20 25 1 2 3 4 5 7 8 15 17 20 25 To External Synchronous Modem/DSU/ T erminal Adapter Connector CHASSIS GROUND (AA) TRANSMIT DA TA (BA) RECEIVE DA T A (BB) REQUEST T O SEND (CA) CLEAR TO SEND (CB) SIGNAL GROUND (AB) CARRIER DETECT (CF) TRANSMIT CLOCK (DB) RECEIVE CL[...]

122 DataT alker Owner ’ s Manual RJ-48 Cable for Internal ISDN T erminal Adapter 1 2 3 4 5 6 7 8 T R RJ-48 Cable for Internal DSU 1 2 3 4 5 6 7 8 RT RR { { Receive T ransmit RT RR Frame Ground (AA) Receive Data (BB) Transmit Data (BA) Clear T o Send (CB) Request T o Send (CA) Signal Ground (AB) Data T erminal Ready (CD) Internal Clock Data Set Re[...]

123 Appendix C - Cabling Diagrams E&M Voice/Fax Channel Cable White-Green Green-White White-Orange White-Blue Blue-White Orange-White Brown-White White-Brown M Input E Output T1 4-Wire Output R 4-Wire Input, 2-Wire T 4-Wire Input, 2-Wire R1 4-Wire Output SG (Signal Ground) Output SB (Signal Battery) Output E&M CABLE RJ45 Plug * Cable wire i[...]

124 DataT alker Owner ’ s Manual Appendix D - Flow Control Background Flow control refers to techniques used by computer devices and the DataT alker to stop and restart the flow of data between them. Flow control prevents a channel device or DataT alker from receiving more data than it can handle. Flow control initiated by the DataT alker is call[...]

125 Appendix E - MMH2834 Modem S-Registers Appendix E - MMH2834 Modem S-Registers Introduction This section describes the MMH2834 memory locations called S-registers , where certain MMH2834 modem configurations are stored. Each S-register is assigned a number (S0, S1, S2, etc.). Use the S command to read and/or change the value stored in an S-regis[...]

126 DataT alker Owner ’ s Manual S11 Tone Dialing: Tone Spacing and Duration Unit: 1 m s Range: 1–255, 80–255*, 80–255*** Default: 70, 80*, 80*** Description: S1 1 sets the speed of tone dialing (spacing and tone duration times). The default value is 70 units (Decimal 7) or 80 units, where each unit is one ms, meaning that each tone is on f[...]

127 Appendix F - MMH2834 Modem Commands Appendix F - MMH2834 Modem Commands F .1 Introduction Before you can enter commands for the MMH2834 internal composite link modem, you must access the modem using the composite link access enable command ( #CLA1 ). When you have configured the MMH2834 modem, disable access from the command port to the composi[...]

128 DataT alker Owner ’ s Manual TYPE COMMAND DESCRIPTION Configure #L0 Negotiate V42 Mode During Handshake Error #L 1 MNP On/LAPM Of f Correction #L2 LAPM On/MNP Of f (Section F .9) #L3 Direct LAPM/Phase Out Handshake $A Auto-Reliable Buf fering $F Enable/Disable Auto-Reliable Fallback Character $R Retransmit Count $E Error Correction at 300 bps[...]

129 Appendix F - MMH2834 Modem Commands F . 2 Dialing Action Commands Dial Command D The letter D in a command causes the MMH2834 to dial the telephone number immediately following it. For example, if you enter A TD5551212 and hit RETURN, the MMH2834 dials the number 555-1212. The MMH2834 gives you several choices of dialing methods. Y ou can use t[...]

130 DataT alker Owner ’ s Manual F .3 Dial Modifier Commands Pulse or Tone Dial P T The MMH2834 dials numbers using either pulse or tone dialing, or a combination of both methods. Pulse dialing is a method used by rotary-dial telephones, which involves the timed opening and closing of line relay . T one dialing is the method used by pushbutton (t[...]

131 Appendix F - MMH2834 Modem Commands Wait for New Dialtone W A W inserted in the dialing command causes the MMH2834 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 will do that first[...]

132 DataT alker Owner ’ s Manual F . 4 Phone Number Memory Commands Storing Phone Numbers D...N A telephone number and command line of up to sixty characters may be stored in the MMH2834’s number memory . As many as ten of these numbers may be stored. Each number will be given a name, using the codes N0, N1, N2 up to N9. A phone number is store[...]

133 Appendix F - MMH2834 Modem Commands F .5 Configuration and Default Storage Commands Store Configuration & S-Register Params. in Non-Volitile Memory & W The MMH2834 can store configuration parameters and S-register values in its non-volatile read/ write Random Access Memory (RAM) memory . The &W command does this, which prevents any [...]

134 DataT alker Owner ’ s Manual F .6 Command Response (Result Code) Commands Echo Command Mode Characters E If the MMH2834 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 is used to configure the [...]

135 Appendix F - MMH2834 Modem Commands TERSE VERBOSE 0O K 1 CONNECT 2 RING 3 NO CARRIER 4 ERROR 5* CONNECT 1200 6 NO DIAL TONE 7 BUSY 8 NO ANSWER 9* CONNECT 2400 1 1* CONNECT 4800 12* CONNECT 9600 13* CONNECT 14400 19* CONNECT 19200 21* CONNECT 21600 24* CONNECT 24000 26* CONNECT 26400 28* CONNECT 28800 * When error correction is used, the word RE[...]

136 DataT alker Owner ’ s Manual The MMH2834 also can detect a distant busy signal, if after dialing, it reaches a busy number . This is useful because it allows the modem to immediately abandon a call, rather than wait 45 seconds for a carrier signal that will never come. The MMH2834 gives you a choice between the wait-for-dial-tone (“smart”[...]

137 Appendix F - MMH2834 Modem Commands F . 7 Phone Line Conditioning Commands Enable or Disable Recognition of Remote Digital Loop Signal &T The MMH2834 has several self-test features (covered in Appendix G). The tests are activated with different U commands, such as A TU1 , and so fortF . The &T command is a phone line conditioning comman[...]

138 DataT alker Owner ’ s Manual F .9 Error Correction Commands Y ou can use A T commands to place your MMH2834 one of three V .42 (error correction) modes of operation. V.42 Mode Select #L The V .42 standard implements both MNP Class 3 & 4 and LAP-M error correction methods. The V .42 Mode Select command ( #L ) selects which type of error co[...]

139 Appendix F - MMH2834 Modem Commands Enable/Disable Auto-Reliable Fallback Character $F In Auto-Reliable mode, the modem is given four seconds to establish a Reliable connection. If a single CARRIAGE RETURN is received from the remote modem during this four second period, the Auto-Reliable modem assumes that the remote modem is not in Reliable m[...]

140 DataT alker Owner ’ s Manual F .10 Compression and Maximum Block Size Commands Data Compression The data compression ( &E14 ) command enables data compression. Maximum Block Size &BS The maximum size of Reliable mode data blocks can be controlled with the &BS command. MNP 3 sends blocks of 1 to 64 characters. MNP 4 and 5 typically[...]

141 Appendix F - MMH2834 Modem Commands F .1 1 Speed Conversion Commands Speed conversion is a necessary part of data compression since data must be presented to the modem faster than it can handle data, if data compression is to be effective. Speed conversion allows the MMH2834 to communicate at one speed over the phone line, and at another speed [...]

142 DataT alker Owner ’ s Manual Serial Port Baud Rate $SB The $SB command presets the speed of the MMH2834's serial (RS232C) port, in both Originate and Answer modes. Speed conversion allows you to set this serial port baud rate at a fixed speed of up to 1 15,200 bps, regardless of the modem’s transmission speed setting. In order for this[...]

143 Appendix F - MMH2834 Modem Commands F .12 Immediate Action Commands Help Screens $H The Help command is designed to give you short explanations on how to use each MMH2834 command. The Help command can be quite useful if your manual is not handy and you are in the middle of a communications session. Although the explanations are quite abbreviate[...]

144 DataT alker Owner ’ s Manual Listing On-Line Diagnostics L8 The L8 command displays the current on-line CONNECT status status of the MMH2834. This display can be printed and used as a modem status report or as diagnostic information (such as when calling T ech Support).This report is given only when on-line. T o activate this command first ty[...]

145 Glossary Glossary A AC (Alternating Current): A power source whose signal crosses a reference voltage (usually called ground or zero). Alternating between a maximum and minimum voltage, AC may also be referred to as a bipolar signal. Contrast with DC. ACK (ACKnowledgement code) (pronounced "ack"): A communications code sent from a rec[...]

146 DataT alker Owner ’ s Manual BSC (Binary Synchronous Communications): Also called "bisync", this communications protocol was the first synchronous data format used by IBM. It is still in use, but is rapidly being replaced by IBM's newer Synchronous Data Link Control (SDLC). Bisync is a byte-synchronous protocol that has longer [...]

147 Glossary De facto standards: A de facto standard is one of two types of voluntary standards recognized by a given market. It is introduced by a single vendor and becomes a standard by its widespread use and acceptance by other vendors. AT&T's Bell 212A, IBM's Binary Synchronous Protocol or DEC's VT-100 terminal protocol are e[...]

148 DataT alker Owner ’ s Manual Flow control: The process of regulating the speed at which data enters or leaves a serial port. Software flow control is implemented by communications software or by the user sending predefined characters or packets which are recognized as "pause" and "resume" indicators. Hardware flow control [...]

149 Glossary L Leased Line: A private, dedicated communications channel that connects two locations. This connection lasts for the duration of the subscription. Leased lines may be conditioned to improve line quality over that of dial-up lines. Line Conditioning: An additional cost option offered by the telephone company for their leased, voice-gra[...]

150 DataT alker Owner ’ s Manual PCMCIA (personal computer memory card international association): An organization of U.S. and Japanese companies set up to standardize memory cards and other architecture-independent expansion devices. These cards are typically used in laptop computers. Phase: The timing of a signal based upon the starting point o[...]

151 Glossary Synchronous Transmission: The transmission of data which involves sending a group of characters in a packet. This is a common method of transmission between computers on a network or between modems. One or more synchronous characters are transmitted to confirm clocking before each packet of data is transmitted. Compare to Asynchronous [...]

152 DataT alker Owner ’ s Manual Index Symbols 2 or 4 Wire (E&M) option .................................... 7 2 2 or 4 Wire option ............................................... 74 A Answer mode ................................................... 138 Answer/Originate option ..................................... 74 ASCII code ...............[...]

153 Index Dialtone/Wink (E&M) option ................................ 72 Digital data service (DDS) .................................. 10 Digital service unit (DSU) ................................... 10 Digitizing Rate option .......................................... 7 0 DIP switch .......................................................... 42[...]

154 DataT alker Owner ’ s Manual Remote Interface T ype option ............................. 72 REN .................................................................... 14 Ringer equivalence number ................................ 14 Rings until modem answers .............................. 125 RS232C/V .24 interface ..............................[...]