Chapter 3 Provisioning the Cisco HSI

Cisco HSI Configuration

Table 3-3 Static System Data Parameters (continued)

Parameter

Type

Description

 

 

 

DualCLISupported

STRING

To enable Dual CLI support (see H.246 Annex C), set this parameter to anything

 

 

other than “”. For example, to explicitly enable Dual CLI support, set this

 

 

parameter to “Enabled.”

 

 

 

InjectPi8

STRING

If this parameter is set to a text value (for example, “enabled” or “true”), the HSI

 

 

inserts a progress indicator value of 8 into the H.225 alerting message, which

 

 

allows creation of a backward speech path. To disable this feature, you can delete

 

 

the parameter using the command prov-dltor issue the prov-edcommand and

 

 

set the value to ““.

 

 

Note Setting the InjectPi8 parameter is required if the PSTN network does

 

 

not notify the HSI that inband information is available. For instance,

 

 

when no Optional Backward Call Indicator is present, a backward

 

 

speech path will not be available.

 

 

 

1. PGW = Public Switched Telephone Network (PSTN) Gateway

Changing Static System Data

To change static system data, you must first determine if it is acceptable to stop currently active calls in 20 seconds. If it is acceptable to stop active calls in 20 seconds, change static system data using the following procedure:

Step 1 Modify the static parameters you want to change.

Step 2 Activate the changed static parameters by issuing the prov-cpycommand.

Step 3 Issue the command restart-softw::confirm.

This command stops the HSI application in 20 seconds and then restarts it. The restarted HSI application reads the changed static system data parameters.

Step 4 To ensure that traffic processing has resumed, issue the command rtrv-ne-health.

If you wish to change static system data but it is not acceptable to stop active calls in 20 seconds, use the following procedure:

Step 1 Modify the static parameters you want to change.

Step 2 Activate the changed static parameters by issuing the prov-cpycommand.

Step 3 Stop call processing by issuing the stp-callproccommand, specifying the timeout period you require. Step 4 When the timeout period expires, ensure that all traffic ceased by issuing the command rtrv-ne-health. Step 5 Restart the HSI software by issuing the command restart-softw.

This command stops the HSI application and then restarts it. The restarted HSI application reads the changed static system data parameters.

Step 6 To ensure that traffic processing has resumed, issue the command rtrv-ne-health.

 

 

Cisco H.323 Signaling Interface User Guide

 

 

 

 

 

 

OL-4806-01 Rev. A14

 

 

3-7

 

 

 

 

 

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Cisco Systems H.323 appendix Changing Static System Data, Issue the command restart-softwconfirm
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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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