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Cisco Systems H.323 manual

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Table of contents for the manual

  • Page 1

    CH A P T E R 3-1 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 3 Provisioning the Cisco HSI Introduction This chapter describes the data that must be pro visioned for t he Cisco H.323 Signal ing Interface ( HSI). The data is div ided into two areas: system conf igur ation and H.323 stack data. This chapter contains the follo wing s[...]

  • Page 2

    3-2 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI Cisco HSI Configuration HSI starts up, it attempts to read the acti v e conf iguration, ch ecks that the conf iguration has been v erif ied, and ensures that the ch ecksum matches. If the acti v e conf iguration is not verif ied or if the checks[...]

  • Page 3

    3-3 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Provisioning the Cisco HSI Cisco HSI Configuration Introduction to MML Command Operation for HSI After the HSI software is installed, you can configu re additional items. The follo wing MML comman d examples sho w ho w to enable DTMF ca pability on the HSI. (For a de scrip[...]

  • Page 4

    3-4 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI Cisco HSI Configuration Step 2 T o display the entire conf iguratio n, issue the follo wing command: rtrv-config T o display a subset of the conf iguration, on e can issue a command such as the follo wing: rtrv-config:sys_config_static Step 3 T [...]

  • Page 5

    3-5 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Provisioning the Cisco HSI Cisco HSI Configuration T able 3-3 Static System D ata P ar ameters Parameter T ype Description HOST_POR T_NUMBER1 [0-65535] The first po rt number to be used by the Cisco H SI. The default v alue is 0. Note This v alue must match the p eer port [...]

  • Page 6

    3-6 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI Cisco HSI Configuration Pa voRedirPresInd [0-3] The v alue of the Pa vo redirecting number presentation indicator . (If this parameter is not provisioned, the default is Q.931 zero—no indication.) CliInDisplaySuppo rted STRING If this paramete[...]

  • Page 7

    3-7 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Provisioning the Cisco HSI Cisco HSI Configuration Changing Static System Data T o change static system data, you must first determine if it is acceptabl e to stop currently acti v e calls in 20 seconds. If it is acceptab le to stop activ e calls in 20 seconds, change stat[...]

  • Page 8

    3-8 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI Cisco HSI Configuration Dynamic System Data T o m odify the dyn amic system da ta parame ters in Ta b l e 3 - 4 , use the sys_config_dyn amic MML name v ariable for the pr ov-add , pr ov-dlt , and pro v-ed commands. Y ou need not halt and restar[...]

  • Page 9

    3-9 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Provisioning the Cisco HSI Cisco HSI Configuration O VLDLEVEL1PERCENT Indicate s what percentage of calls sh ould be rejected when an overload condition occurs . Thi s parameter is used in conjun ction with the O VLDLEVEL1FIL TER parameter . The overload le vel 1 v alue is[...]

  • Page 10

    3-10 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI H.323 Stack Configuration H.323 Stack Configuration The parameter nam e is based on the A SN.1 paths; but, in some cases, the par ameter nam e has been shortened for con v enience. For example, “ca pabilities” has been shortened to “caps.[...]

  • Page 11

    3-11 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Provisioning the Cisco HSI H.323 Stack Configuration Nonprovisionable Data The parameters in Ta b l e 3 - 5 cannot be altered through MML commands. MML Provisionable Data H.323 System Parameters The parameters in Ta b l e 3 - 6 are required for H.323 stack initiali zation[...]

  • Page 12

    3-12 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI H.323 Stack Configuration Example prov-add:name=q931,maxCalls=2000 The Update T ype column in Ta b l e 3 - 7 sho ws when the change to a parameter takes effect once a change is made: • Immediate means that the effect of the change is immediat[...]

  • Page 13

    3-13 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Provisioning the Cisco HSI H.323 Stack Configuration RAS Parameters The parameters in Ta b l e 3 - 8 are required for RAS stack initializa tion. T o modify the RAS parameters, use the ras MML name variabl e for the prov-add , pr ov-dlt , and pro v-ed commands. In the foll[...]

  • Page 14

    3-14 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI H.323 Stack Configuration allo wCallsWhenNonReg If this paramet er is present, it allo ws calls to proceed ev en if gatekeeper re gistration has not been done for the PGW 2200. NULL Not present Immediate manualRegistration If this parameter is [...]

  • Page 15

    3-15 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Provisioning the Cisco HSI H.323 Stack Configuration H.245 Parameters T o modify the H.245 parameters listed in Ta b l e 3 - 9 , use the h245 MML name variable for the pr ov-add, pro v-dlt and pro v-ed commands. In the follo wing example, the pro v-add command sets the H.[...]

  • Page 16

    3-16 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI H.323 Stack Configuration Ta b l e 3 - 1 0 , Ta b l e 3 - 1 1 , and Ta b l e 3 - 1 2 list the parameters and modes related to the conf iguring of codecs. The array index [i] must be replaced with a valid braced i ndex from 1 to 20. The braced i[...]

  • Page 17

    3-17 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Provisioning the Cisco HSI H.323 Stack Configuration caps.table[i].audio.g7 22at56k INTEGER(1, 256) caps.table[i].audio.g7 22at48k INTEGER(1, 256) caps.table[i].audio.g7 231.maxAudioFrames INTEGER(1,256) caps.table[i].audio.g723 1.silenceSuppression INTEGER(0,1) caps.tabl[...]

  • Page 18

    3-18 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI H.323 Stack Configuration Codec Selection The Cisco HSI negotiates the media stream codec to establish a match betw een the PSTN MGCP med ia gate way ( for exampl e, the Cisco AS5xxx series or Cisco MGX series) and the H .323 endpoint or gate w[...]

  • Page 19

    3-19 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Provisioning the Cisco HSI H.323 Stack Configuration The follo wing MML comman d exampl e sho ws the command sequence used to pr ovision t he call control parameters provid ed in the preceding table. Example mml > prov-sta::srcver=active, dstver=myconf > prov-ed:nam[...]

  • Page 20

    3-20 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI H.323 Stack Configuration T able 3-14 Common Static System D ata P ar ameters Parameter Name Parameter V alues Description CarrierCodeM apping • “enabled”—a string that indicates the feature is enabled. • Blank (“”)—indicates th[...]

  • Page 21

    3-21 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Provisioning the Cisco HSI H.323 Stack Configuration The follo wing MML command e xample sho w s the command sequence used to p rovision t he static system data p aramete rs provided in the precedin g table. Example mml > prov-sta::srcver=active, dstver=myconf > pro[...]

  • Page 22

    3-22 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI HSI Feature Configuration Ta b l e 3 - 1 6 presents common H.245 paramete rs for enabling t he G.729 codec. The follo wing MML command e xample sho ws the command sequence used to provision t he H.245 parameters provided in the preced ing table[...]

  • Page 23

    3-23 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Provisioning the Cisco HSI HSI Feature Configuration • Config uring G.726 on the Cisco HSI • Conf iguring G.72 9 Annex and G.729 An nex B Asymmetric Codec Treatment The Asymmetric Codec T reatment feature av erts the potential for in consistencies in codec selection ,[...]

  • Page 24

    3-24 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI HSI Feature Configuration Refer to Cisco PGW and Cisco IOS documentation at w ww .cisco.com for further informat ion on these commands. T.38 Fax The T .38 Fax feature enables the HS I to alter a call, initially established fo r voice, to su ppo[...]

  • Page 25

    3-25 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Provisioning the Cisco HSI HSI Feature Configuration Support for the H.225 INFORMA TION message is enabled by defaul t. A crafts person can disable H.25 5 INFORMA TION message support through a ne w propert y called Information MsgDisabled b y issu ing the follo wing MML [...]

  • Page 26

    3-26 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI HSI Feature Configuration Ta b l e 3 - 1 7 presents examples of conf iguration commands th at may be required to implement a particular G.Clear configuration. T able 3-1 7 Configur ing Clear Channel Clear Channel Parameters Example V alue Examp[...]

  • Page 27

    3-27 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Provisioning the Cisco HSI HSI Feature Configuration Configuring G.726 on the Cisco HSI The G.726 codec enables transcoding a PCM channel to or from an ADPCM data stream. The standard supports four da ta rates:1 6, 24, 32 and 40 kbit/sec. G.726 capability is adv ertised b[...]

  • Page 28

    3-28 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI HSI Feature Configuration If a non-preferred G.726 d ata rate is selected o ver a higher -preference codec, th e HSI will continue with the call using the non-preferred data rate. This i s pref erable to the alternativ e (aborting the media str[...]

  • Page 29

    3-29 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Provisioning the Cisco HSI HSI Feature Configuration H245, caps.table[i].entryNo 7261, 7262, … Note Set this p arameter to a unique inte ger val u e prov-add: name=h245, caps.table[5].entry No=7261 prov-add: name=h245, caps.table[6].entry No=7262 H245, chan[i].audio.g72[...]

  • Page 30

    3-30 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI HSI Feature Configuration H245, caps.table[i].audio. g726-generic.bitOrder 1,2 or 3 Note This f ield is a bitmask of 8 bits, and can take any value from 0...255. Refer to G.726 Annex B, sect ion B4.2 for a more detailed description. The value i[...]

  • Page 31

    3-31 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Provisioning the Cisco HSI HSI Feature Configuration Configuring G.729 Annex and G.729 Annex B Ta b l e 3 - 1 8 presents examples of conf iguration commands th at may be requi red to implement a particular confi guration of G.729 Annex A or G.729 Anne x B. H245, modes[i].[...]

  • Page 32

    3-32 Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Chapter 3 Prov isioning the Cisco HSI HSI Feature Configuration H245,modes[i].name “g7 29Anne xA” “g729Anne xB” “g729Anne xA wAnne xB” prov-ad d:name=h245,modes[4].name="g729 AnnexA" prov-ad d:name=h245,modes[5].name="g729 AnnexB" prov-ad d:name=h245[...]