A P P E N D I X B

Skeleton Configuration File

Provisionable and configurable data elements within the Cisco H.323 Signaling Interface (HSI) are grouped as dynamic, static, or constant data. You can modify dynamic and static data through the provisioning MML commands.

At startup, the Cisco HSI reads a skeleton file, which contains information for every configurable item within the system. It determines which group the item is in and what its possible ranges are. The format for each item is:

PackageName

ItemName

GroupValueRange

The package name is an MML name for dynamic and static data, and service package names (determined within the detailed design) for constant data.

The item name is as specified in the detailed design (that is, all constant data).

The group is one of the following:

S = Static data

D = Dynamic data

C = Constant data

The ValueRange is one of the following:

[ ] = Number: No range

[x–y] = Number: Acceptable range x to y

STRING = String value

NULL = No associated value

An example of an MML command follows:

RASmaxFailD[1-200]

In the preceding example, the PackageName is RAS, and the ItemName is maxFail. It is a dynamic configuration item, and it is a numerical data type with an acceptable range of 1 to 200.

The skeleton file allows the system technician to specify whether data is provisionable and whether provisionable data is static or dynamic.

Note The skeleton configuration file should be modified only by authorized personnel.

The following is an example of a skeleton file:

 

 

Cisco H.323 Signaling Interface User Guide

 

 

 

 

 

 

 

OL-4806-01 Rev. A14

 

 

B-1

 

 

 

 

 

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Cisco Systems H.323 manual Skeleton Configuration File, RASmaxFailD1-200

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.