Chapter 3 Provisioning the Cisco HSI

H.323 Stack Configuration

Table 3-9 H.245 Parameters

 

 

 

 

Update

Parameter Name

Description

Type

Example

Type

 

 

 

 

 

masterSlave.terminalType

The terminal type for the

INTEGER(0, 255)

60

Next Call

 

PGW 2200.

 

 

 

 

 

 

 

 

masterSlave.manualResponse

If this parameter is present, it

NULL

Present

Next Call

 

cancels automatic

 

 

 

 

acknowledgment of master or slave

 

 

 

 

determination.

 

 

 

 

 

 

 

 

masterSlave.timeout

The maximum time (in seconds)

INTEGER(0, 65535)

5

Immediate

 

the stack waits before it gives up on

 

 

 

 

the master/slave procedure.

 

 

 

 

 

 

 

 

channelsTimeout

The time (in seconds) the stack

INTEGER(0, 65535)

10

Immediate

 

waits for a response to a channel

 

 

 

 

establishment message.

 

 

 

 

 

 

 

 

roundTripTimeout

The time (in seconds) the stack

INTEGER(0, 65535)

5

Immediate

 

waits for round-trip procedure

 

 

 

 

completion.

 

 

 

 

 

 

 

 

requestCloseTimeout

The time (in seconds) the stack

INTEGER(0, 65535)

5

Immediate

 

waits for request close procedure

 

 

 

 

completion.

 

 

 

 

 

 

 

 

requestModeTimeout

The time (in seconds) the stack

INTEGER(0, 65535)

5

Immediate

 

waits for request mode procedure

 

 

 

 

completion.

 

 

 

 

 

 

 

 

caps.timeout

The maximum time (in seconds)

INTEGER(0, 65535)

5

Immediate

 

the stack waits before it gives up on

 

 

 

 

the capability exchange procedure.

 

 

 

 

 

 

 

 

caps.maxAudioDelay

Maximum H.255 multiplex audio

INTEGER(0, 1023)

60

Immediate

 

delay jitter.

 

 

 

 

 

 

 

 

mediaLoopTimeout

The timeout (in seconds) of the

INTEGER(0, 65535)

5

Immediate

 

media loop procedure.

 

 

 

 

 

 

 

 

Table 3-10, Table 3-11, and Table 3-12list the parameters and modes related to the configuring of codecs. The array index [i] must be replaced with a valid braced index from 1 to 20. The braced index must be continuous and unique (that is, there must be no duplicates).

Table 3-10 H.245 Terminal Capability Codec Parameters

 

 

 

 

Parameter Name

Type

 

 

 

 

 

 

 

 

 

 

 

 

caps.table[i].entryNo

INTEGER(1, 65535)

 

 

 

 

 

 

 

 

 

 

 

caps.table[i].audio.g711Alaw64k

INTEGER(1, 256)

 

 

 

 

 

 

 

 

 

 

 

caps.table[i].audio.g711Alaw56k

INTEGER(1, 256)

 

 

 

 

 

 

 

 

 

 

 

caps.table[i].audio.g711Ulaw64k

INTEGER(1, 256)

 

 

 

 

 

 

 

 

 

 

 

caps.table[i].audio.g711Ulaw56k

INTEGER(1, 256)

 

 

 

 

 

 

 

 

 

 

 

caps.table[i].audio.g722at64k

INTEGER(1, 256)

 

 

 

 

 

 

 

 

 

 

 

Cisco H.323 Signaling Interface User Guide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3-16

 

 

 

 

OL-4806-01 Rev. A14

 

 

 

 

 

 

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Cisco Systems H.323 appendix Update, Parameter Name Type
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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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