Cisco Systems H.323 appendix HSI Feature Configuration, Parameter Name Parameter Value

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Chapter 3 Provisioning the Cisco HSI

HSI Feature Configuration

Table 3-16presents common H.245 parameters for enabling the G.729 codec.

Table 3-16 Common H.245 Parameters

Parameter Name

Parameter Value

 

 

chan[i].name

For example:

 

prov-add:name=”H245”,chan[4].name=”g729”

 

 

chan[i].audio.g729

For example:

 

prov-add:name=”H245”,chan[4].audio.g729=”2”

 

 

caps.table[i].audio.g729

For example:

 

prov-add:name=”H245”,caps.table[4].audio.g729=”2”

 

 

caps.table[i].entryNo

For example:

 

prov-add:name=”H245”,caps.table[4].entryno=”729”

 

 

modes[i].name

For example:

 

prov-add:name=”H245”,modes[3].name=”g729”

 

 

modes[i].audio.g729

For example:

 

prov-add:name=”H245”,modes[3].audio.g729=”3].audio.

 

g729=””

 

 

The following MML command example shows the command sequence used to provision the H.245 parameters provided in the preceding table for enabling the G.729 codec. Provisioning the G.729 codec on the Cisco HSI supports passing SS7 calls to the Cisco CallManager through a gateway running the Media Gateway Control Protocol (MGCP).

Example

prov-sta::srcver=”active”,dstver=”g729" prov-add:name=”H245”,caps.table[4].audio.g729=”2” prov-add:name=”H245”,caps.table[4].entryno=”729” prov-add:name=”H245”,chan[4].audio.g729=”2” prov-add:name=”H245”,chan[4].name=”g729” prov-add:name="H245",modes[3].audio.g729=""

prov-add:name=”H245”,modes[3].name=”g729”

HSI Feature Configuration

This section describes how to enable the following HSI features:

•Asymmetric Codec Treatment

•Empty Capability Set

•H.323 Hairpin

•T.38 Fax

•HSI INFORMATION Message Support

•HSI Support for Tech Prefixes

•Configuring Clear Channel on the Cisco HSI

 

Cisco H.323 Signaling Interface User Guide

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OL-4806-01 Rev. A14

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Contents Provisioning the Cisco HSI Command Description MML Configuration CommandsCommand DescriptionInitiating an MML Session to Enable Dtmf on the HSI Introduction to MML Command Operation for HSIVerifying the Configuration Static System Data System Configuration DataReverting to the Base Configuration ExampleParameter Type Description Parameter, set it to Enabled Issue the command restart-softwconfirm Changing Static System DataParameter Description Default Dynamic System DataOVLDLEVEL1FILTER OVLDLEVEL1PERCENTOVLDLEVEL3PERCENT OVLDLEVEL1THRESHLOWEROVLDLEVEL3THRESHLOWER AlarmdebouncetimeOVLDLEVEL3FILTER OVLDLEVEL3THRESHUPPERSystem Parameters Nonprovisionable DataMML Provisionable Data ParametersParameter Name Description Type Example Update Type NullRAS Parameters Parameter Name Description Type ExampleAllowCallsWhenNonReg If this parameter is present, it String H323ESP Update Parameter Name TypeINTEGER0,1 Quick Reference for Important Parameters Codec SelectionParameter Name Parameter Value Description 14presents important static system data parameters Parameter Name Parameter Values Description VSCBIPADDR1/2 VSCBPORTNUMBER1/2HSI Feature Configuration Parameter Name Parameter ValueEmpty Capability Set Asymmetric Codec TreatmentHairpin Configuring T.38 Fax on a Cisco IOS Mgcp Gateway Configuring T.38 Fax on the Cisco Pstn GatewayConfiguring T.38 Fax on a Cisco IOS H.323 Gateway 38 FaxConfiguring Clear Channel on the Cisco HSI HSI Support for Tech PrefixesClear Channel Parameters Example Value Example Configuration Configuring G.726 on the Cisco HSI Parameter Example Value Configuration Example Configuring the Payload Type for the MgcpConfiguring Cisco HSI g726-generic OL-4806-01 Rev. A14 Configuring G.729 Annex and G.729 Annex B ParameterOL-4806-01 Rev. A14
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H.323 specifications

Cisco Systems H.323 is a set of standards designed for transmitting audio, video, and data over packet-switched networks. It is a critical technology that enables real-time communication and has become integral to the world of VoIP (Voice over Internet Protocol) and video conferencing applications. Originally developed by the ITU-T, H.323 has been widely adopted and implemented by Cisco Systems, allowing organizations to leverage reliable and scalable communication solutions.

One of the standout features of H.323 is its ability to support interoperability among varying equipment and platforms. This means that devices from different manufacturers can communicate seamlessly, which is vital in a diverse technical environment. H.323 does this by defining protocols that handle signaling, media transport, and control, ensuring that various systems can work together effectively.

Key technologies utilized within H.323 include H.225 and H.245 signaling protocols. H.225 is responsible for call setup and management, establishing communication between endpoints. In contrast, H.245 manages the negotiation of media channels, allowing devices to configure themselves based on the capabilities of each other. This adaptability is crucial for dynamic network conditions typical in VoIP applications.

Another defining characteristic of H.323 is its support for multiple types of multimedia communication, including point-to-point and multipoint calls. This flexibility supports everything from simple audio calls to complex videoconferencing setups, where many participants can share video and audio streams concurrently. Cisco enhances this capability through its hardware and software offerings, optimizing performance for conference calls.

H.323 also features robust error resilience mechanisms. This ensures that real-time data, which is typically sensitive to delays and losses, can be transmitted with minimal disruption. Moreover, it facilitates quality of service (QoS) implementation, allowing organizations to prioritize voice and video traffic over less critical data services, thereby improving the overall user experience.

In conclusion, Cisco Systems H.323 stands out as a comprehensive solution for real-time communication over packet-based networks. Its main features, including interoperability, multimedia support, and enhanced error resilience, position it as a relevant technology in both corporate and personal communication settings. As organizations continue to adopt cloud and hybrid communication models, H.323 remains a reliable backbone for ensuring connectivity and collaboration across diverse platforms.
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