MML Help, Quitting an MML Session | Cisco Systems H.323 instruction

Appendix A MML User Interface and Command Reference

MML Help

Error Messages

If an MML command does not perform, an error message is displayed. Table A-4lists the MML error messages and their descriptions.

Table A-4 MML Error Messages and Descriptions

Error Message	Definition	Description

DENY	Command denied	The system recognizes the command but does not
		perform the requested function.

ICNV	Input command not valid	The system does not recognize the MML
		command.

IDNV	Input data not valid	An unknown parameter was entered.

IISP	Input syntax error	Incorrect syntax was entered.

IITA	Invalid target	The system cannot perform the requested
		operation on the specified component, or the
		component does not exist.

IPRM	Input parameter missing	An expected parameter was not entered.

SABT	Status abort	The requested operation did not complete within
		the allotted time.

SNVS	Component not in valid state	The requested operation failed because the
		component is either not configured to accept the
		operation or the component is already in the
		desired state.

SNSP	State not supported	The operation is not supported by the component.

SROF	Status requested operation	The requested operation failed.
	failed

MML Help

MML has an online help feature. The MML help command displays a list of valid system commands and an explanation of each command’s use. To display the online help, start an MML session and type help at the command line prompt. See the “help” section on page A-11.

Quitting an MML Session

To quit an MML session, type quit at the prompt.

	Cisco H.323 Signaling Interface User Guide
A-6	OL-4806-01 Rev. A14

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 MML Help, Quitting an MML Session, Error Messages

Models: H.323

Error Messages

Error Message

Definition

Description

IITA

SNVS

MML Help

Quitting an MML Session

To quit an MML session, type quit at the prompt.

OL-4806-01 Rev. A14

H.323 specifications