Chapter 2 Installing and Configuring Cisco HSI Software

Stopping the Cisco HSI

Stopping the Cisco HSI

To stop the Cisco HSI, log in as root user and enter the following command:

# /etc/init.d/CiscoGW stop

Note The command to stop the Cisco HSI returns information such as the following:

/etc/init.d/CiscoGW stop Signalling PMmain to shut down Signalling GWmain[739] to shut down Process 'PMmain' not found Process 'GWmain' not found

...shutdown complete

The “not found” messages do not indicate a problem. The shutdown script first attempts to shutdown the HSI processes gracefully (kill -39). The script then checks to determine whether the processes still exist. If HSI processes remain active, the script uses the kill -9 command. The “shutdown complete” announcement indicates that the shutdown script succeeded in stopping the HSI.

Configuring the Cisco HSI

To configure the Cisco HSI, you must first access the user interface. Use the mml command (see Appendix A, “MML User Interface and Command Reference” for more information). If the setup.gw file has been sourced, it is in the user path. Use the provisioning commands to configure the Cisco HSI as required (see Chapter 3, “Provisioning the Cisco HSI” and Appendix A, “MML User Interface and Command Reference” for more information).

Upgrading the Cisco HSI

Before removing an old version of the Cisco HSI, install the new version of the software. You can export a provisioning session to a flat file in a format that can be used as input to another provisioning session (see prov-expin Appendix A, “MML User Interface and Command Reference,” for more information).

Note To upgrade to Cisco HSI 4.1, if you have not partitioned disks according to the information provided in the partitioning tables presented in the Cisco Media Gateway Controller Software Release 9 Installation and Configuration Guide, you must repartition the disks and reinstall the operating system.

When you upgrade the Cisco HSI version, the following conditions apply:

•The Cisco HSI must first be stopped before installation is allowed to proceed.

•The installation of the new software does not overwrite the existing installed version.

•The installation of a new version results in a new version directory being created in the /opt/GoldWing parent directory. The links currentPM and currentGW are updated to point to this new version.

 

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Cisco Systems H.323 Stopping the Cisco HSI, Configuring the Cisco HSI, Upgrading the Cisco HSI, # /etc/init.d/CiscoGW stop
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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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