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AT&T Network Integrated Services Digital Network (ISDN) Primary Rate Interface and Special Application Specification
Overview This Technical Reference describes the service-related capabilities and features, which will be supported by the AT&T Switched Network in its implementation of Integrated Services Digital Network (ISDN) Primary Rate Interface (PRI). The ISDN Primary Rate Interface is a multi-purpose, high speed multiplexed digital interface based on International Telecommunication Union Telecommunication Standardization Sector (ITU-T, formerly CCITT) ISDN Recommendations 1. These Recommendations specify the use of a 1.544 Mbps (DS-1) digital interface, structured to contain bearer channels for the transport of end user information (e.g., voice, customer data, etc.) and a message-oriented, out-of-band, signaling channel used to control the bearer channels. The message-oriented signaling channel follows a layered protocol structure, based on the ITU-T I.441 (LAPD) and I.451 Recommendations for Layers 2 and 3, respectively.
| Publisher | AT&T | File Format | |
|---|---|---|---|
| Date Published | June 1999 | Downloads | 28 |
| Format | White Papers | ||
| Topics | |||
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