Appendix A MML User Interface and Command Reference

help

Examples

The command shown in the following example displays help for a specific command:

 

mml>

help:rtrv-ctr

 

H323

Signalling Gateway Tue Feb 12 19:09:58 2002

 

M SUCC

 

RTRV-CTR --

Display the measurements for a counter group

 

--------------------------------------------------------

Purpose:

This MML command displays a measurement counter for a counter group

Format:

rtrv-ctr:<counter group>

Description:

* counter group

-- The name of an MML counter group (RAS, Q931 or H245)

Example:

The MML command shown in the following example displays measurement

 

counters for the counter group RAS.

mml> rtrv-ctr:ras;

GW Signalling GateWay 2000-12--5 14:19:32

M RTRV "H323-GW1:GROUP=RAS,NAME=\"GK_DISC_ATT_TOT\",VAL=1000" "H323-GW1:GROUP=RAS,NAME=\"GK_REG_ATT_TOT\",VAL=1000" "H323-GW1:GROUP=RAS,NAME=\"GK_REG_SUCC_TOT\",VAL=1000"

mml>

If you enter the help command without a parameter, the help file displays information about all available commands. The following example shows a portion of the help file that displays if you do not enter a parameter:

mml> help

VSC H323 signaling interface – H323-GW1 2000-06-20 10:04:28

M RTRV

Available commands (in alphabetical order):

ack-alm:”<alm cat>” Acknowledges an alarm category on a component clr-alm:”<alm cat>” Clears an alarm category on a component clr-meas:”<meas cat>” Resets a measurement category on a component diaglog:<file name>:STARTSTOP Starts/stops diagnostics log h[::<number>[,<number>]] Displays a history of commands for a specified backward number or range; the last command by default

help[:<command name>] Displays the list of MML commands or the help information on a specified command

prov-add:name=<MML name>,<param name>=<param value>,... Adds the component prov-cpy Commits provisioning data

prov-dlt:name=<MML name> Deletes the component

 

Cisco H.323 Signaling Interface User Guide

A-12

OL-4806-01 Rev. A14

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Cisco Systems H.323 manual Helprtrv-ctr, Rtrv-Ctr
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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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