Chapter 3 Provisioning the Cisco HSI

Cisco HSI Configuration

Introduction to MML Command Operation for HSI

After the HSI software is installed, you can configure additional items. The following MML command examples show how to enable DTMF capability on the HSI. (For a description of the sys_config_static entry and the dtmf parameters, please see the section (System Configuration Data).

Initiating an MML Session to Enable DTMF on the HSI

The following MML command example shows how to start an MML session and enable DTMF support of the HSI:

Step 1 As root user, issue the following command:

/etc/init.d/CiscoGW start

Step 2 As mgcusr, begin an MML session by issuing the following command:

mml

Step 3 To enable DTMF support on the HSI, issue the following set of commands:

prov-sta:srcver=active, dstver=myconf

Note The preceding command creates a new configuration, based on the current configuration, called myconf.

prov-add:name=sys_config_static, dtmfsupportedtype=dtmf prov-add:name=sys_config_static, dtmfsupporteddirection=both prov-cpy

restart-softw

Note Certain configuration changes do not take effect until the HSI is restarted. After the restart-softwcommand is issued, the HSI restarts in approximately 20 seconds.

Caution Use MML commands to perform all HSI configuration. Never manually edit system configuration files because they do not undergo the same parse checks as MML commands. In addition, the HSI uses a machine-generated checksum to verify the system files. If you modify the system configuration files manually, the HSI cannot use them and reverts to the base configuration.

Verifying the Configuration

The following MML command examples show how to verify that configuration changes have been correctly processed:

Step 1 To retrieve information about the current provisioning session, issue the following command:

prov-rtrv:list

Note The HSI prints an asterisk next to the currently active configuration.

 

 

Cisco H.323 Signaling Interface User Guide

 

 

 

 

 

 

OL-4806-01 Rev. A14

 

 

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Cisco Systems H.323 Introduction to MML Command Operation for HSI, Initiating an MML Session to Enable Dtmf on the HSI
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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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