Rtrv-dest, Signalling path to the PGW | Cisco Systems H.323 specification

Appendix A MML User Interface and Command Reference

rtrv-dest

The rtrv-destcommand retrieves status information about the IP links and EISUP signalling path to the PGW 2200.

The output produced by this command shows the states of the H323 signalling gateway external interfaces to the PGW 2200s:

•IS: In Service

•OOS: Out Of Service

•MAN: Manual

•REM: Remote

•FLT: Fault

•NCFG: Not Configured

Examples	The MML command in the following example retrieves status information about the IP links and EISUP
	signalling path to the PGW 2200:
	gw mml>	rtrv-dest
	H323	Signalling Gateway Thu Aug 23 01:15:32 2007
	M SUCC
		VscA:	ACT
		ipLink1toVscA:	IS
		ipLink2toVscA:	OOS NCFG
		VscB:	OOS NCFG
		ipLink1toVscB:	OOS NCFG
		ipLink2toVscB:	OOS NCFG
		EisupPath:	IS
	gw mml>

Related Commands	Command		Description

	set-dest-state		Changes the service state of an IP link or E-ISUP signaling path to in
			service (IS) or out of service (OOS).

	Cisco H.323 Signaling Interface User Guide
	Cisco H.323 Signaling Interface User Guide
OL-4806-01 Rev. A14		A-27
OL-4806-01 Rev. A14		A-27

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.

Cisco Systems H.323 manual Rtrv-dest, Signalling path to the PGW, Set-dest-state

Models: H.323

rtrv-dest

Examples

signalling path to the PGW 2200:

rtrv-dest

M SUCC

Command

Description

set-dest-state

service (IS) or out of service (OOS).

H.323 specifications