MERLIN LEGEND Communications System Release 6.1
Feature Reference
555-661-110
Issue 1
August 1998
Features
Page 497Primary Rate Interface (PRI) and T1
Figure 37. PRI Lines and B-Channel Groups
In Release 6.0 and later systems (Hybrid/PBX mode only), PRI tandem trunks are
available to network MERLIN LEGEND Communications Systems with one
another or with DEFINITY ECS and DEFINITY ProLogix Solutions
communications systems, providing smoother operation, additional features, and
easier management than the networking available in earlier releases. Tandem PRI
trunks are private trunks that may use CO switches in the PSTN for amplification
over long distances but do not use CO facilities for switching. For details, see
“Tandem PRI Trunks” on page 507
.
PRI service offers the following benefits:
■ Network Subscriber Service Options. Release 4.2 and later systems
support network services from AT&T, MCI, and the DMS-100 5ESS
network of local exchange carriers. (Prior releases support AT&T
subscriber 5ESS LEC subscriber services only.) These services are
described in “Type of Service” on page 502
. In Release 6.0 and later
systems, tandem networking is supported by using PRI, T1-emulated
voice, and T1-emulated data trunks as tandem trunks in private networks
of systems.
OUTGOING LINE
IS SELECTABLE
BY USER
Line 801
Line 802
Line 803
Line 804
PRI
Line 849
PRI
Line 850
PRI
Line 851
PRI
Line 852
B-channels
B-CHANNEL
GROUP
Trunks:
Loop-start
Ground-start
DID
Tie
PRI
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