AT&T Telephone DS1/DMi/ISDN-PRI Manuel d'utilisateur télécharger pdf (Page 55)

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101

INTRODUCTION

1-31

Full DCS feature transparency is provided between two or more Generic 2s interconnected with

ISDN-PRI facilities. The supported voice terminal features include:

●

Abbreviated dialing

Alphanumeric display

Automatic callback

Call coverage

Call forwarding — all calls

Call waiting — terminating

●

Call waiting — conference

Priority calls

Distinctive ringing

Leave word — calling (no AP)

Leave word — call transfer

9. When ISDN-PRI facilities connect an ETN main to an ETN tandem, the main must do

additional routing since cut-through operation is not permitted. Dialed digits must first be

collected and then the setup message transmitted to the tandem.

Automatic Voice Networks (AUTOVON) and tandem tie-trunk networks (TTTN) and Common-

Control Switching Arrangement (CCSA) or Enhanced Private Switched Communications Service

(EPSCS) networks that use E&M trunks cannot be served by ISDN-PRI trunks. DS1 facilities that

use robbed-bit inband signaling will work. AUTOVON service is not supported for Generic 2

version 1.0 equipped with one or more universal modules.

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AT&T Telephone DS1/DMi/ISDN-PRI Manuel d'utilisateur Page 55

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