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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:
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Abbreviated dialing
Alphanumeric display
Automatic callback
Call coverage
Call forwarding — all calls
Call waiting — terminating
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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.