No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Voice Feature Guide 01

Rate and give feedback :
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Introduction to ISDN

Introduction to ISDN

Definition

The integrated services digital network (ISDN) is a CCITT standard, providing integrated transmission service for voice, video, and data. The ISDN enables the voice, video, and data to be transmitted on the data channel simultaneously.

The ISDN supports two types of services:
  • Basic rate interface (BRI): provides a rate of 144 kbit/s, including two B channels and one D channel. The rates of B and D channels are 64 kbit/s and 16 kbit/s, respectively.
  • Primary rate interface (PRI): provides a rate of 2.048 Mbit/s, including 30 B channels and 1 D channel. The rates of both B and D channels are 64 kbit/s.
ISDN networks support B and D channels, shown in Figure 1-104.
  • B channels are used for carrying services.
  • D channels are used for transmitting call control signaling as well as maintenance and management signaling.
Figure 1-104 ISDN channels

Purpose

The ISDN access on the media gateway provides integrated transmission services, such as voice, video, and data for the users.

Translation
Download
Updated: 2019-02-22

Document ID: EDOC1100067358

Views: 13032

Downloads: 123

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next