Hairpin 38 Fax | Cisco Systems H.323 manual

Contents

H.323 Stack Configuration		10
Nonprovisionable Data		11
MML Provisionable Data 11
H.323	System Parameters		11
Q.931	Parameters	11
RAS Parameters		13
H.245	Parameters	15
Codec Selection		18
Quick Reference for Important Parameters 18
HSI Feature Configuration		22
Asymmetric Codec Treatment			23
Empty Capability Set		23
H.323 Hairpin 23
T.38 Fax	24

Configuring T.38	Fax on the Cisco PSTN Gateway	24
Configuring T.38	Fax on a Cisco IOS H.323 Gateway	24
Configuring T.38	Fax on a Cisco IOS MGCP Gateway	24

		HSI INFORMATION Message Support					24
		HSI Support for Tech Prefixes				25
		Configuring Clear Channel on the Cisco HSI						25
		Configuring G.726 on the Cisco HSI					27
		Configuring G.729 Annex and G.729 Annex B						31
		Managing the Cisco HSI
C H A P T E R 4		Managing the Cisco HSI		1
		Introduction	1
		Restarting the Cisco HSI Application				1
		Stopping Call Processing		1
		Starting Call Processing		2
		Stopping the Call Processing Application					2
		Starting the Call Processing Application					2
		Reporting the Cisco HSI Status			2
		Measurements	2
		System-Related Measurements				2
		Call-Related Measurements			3
		Resetting Measurements			6
		Retrieving Counters		6
		Overload 6
		Overload Level 1 7
								Cisco H.323 Signaling Interface User Guide
								Cisco H.323 Signaling Interface User Guide
	OL-4806-01 Rev. A14								v
	OL-4806-01 Rev. A14								v

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 Hairpin 38 Fax

Models: H.323

Codec Selection

H.323 Hairpin 23

T.38 Fax

Fax on the Cisco PSTN Gateway

Introduction

Overload 6

Overload Level 1 7

H.323 specifications