Avaya Communication Manager Administrator's Manual page 1581

Figure 392: ISDN network configuration
Figure notes
1 Avaya Media Server
2 ISDN trunk
AT&T Switched Network Protocol
Avaya Communication Manager supports the AT&T Switched Network Protocol described in the
TR41449 (for 4ESS to common carrier) and TR41459 (for 5ESS to CO) ISDN protocol standards as
defined by AT&T. This protocol is used when the DS1 circuit pack is administered for Country Code 1,
Protocol Version a. The AT&T Switched Network provides you with the following services.
Access to AT&T Switched Network Services
ISDN provides access to AT&T Switched Network Services. The definition of the
the ISDN Trunk Group screen includes a table that outlines these switched-network services. An ISDN
trunk group may be dedicated to a particular feature. Alternately, an ISDN call-by-call trunk group may
provide access to several features. For a description of the services accessible via ISDN (either via
dedicated or call-by-call trunk groups), see
Call Identification Display
ISDN Call Identification Display provides a transparent name and number display for all
display-equipped telephones within an ISDN network. The feature is transparent in that the same
information can be provided at all ISDN facilities. Telephones using this feature should be digital
telephones with a 40-character alphanumeric display. The Merlin hybrid sets with 32-character displays
(7315H and 7317H) also support this feature.
Administrator's Guide for Avaya Communication Manager
November 2003
3 Public switched network
4 Host computer
Call-by-call service selection
Feature Reference
ISDN service
Service Type field on
on page 1407.
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