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MERLIN LEGENDCommunications System Release 6.1
System Planning
555-661-112
Issue 1
August 1998
Lines/Trunks
Page 3-31Selecting Line/Trunk Options
3
Module Information 3
Use the procedure in this section to fill in module information on pages 1 and 2 of
Form 3b, Incoming Trunks: DS1 Connectivity (100D Module). Then proceed to the
next section, “PRI Options.”
Planning Form Instructions 3
On Form 3b (page 1), Incoming Trunks: DS1 Connectivity (100D Module), for
each 100D module with PRI service:
1. In the module Slot No. space, write the number of the control unit slot that
contains the module (see the Control Unit Diagram on Form 1).
NOTE:
If more than one 100D module is used, complete the first box,
Module 1, to show the options assigned to the 100D module in the
lowest-numbered control unit slot. Use the second box for the
second lowest-numbered slot and the last box for the
highest-numbered slot.
2. Under the Type of Service heading, check PRI. (During programming, PRI
must be selected here
before
the PRI options information is entered. When
it is selected, the system restarts.)
3. Under the Switch Type (PRI Service Only) heading, check the PRI switch
type. If the switch is part of a private network, check either Legend-PBX or
Legend-NTWK.
NOTE:
If the switch is part of a private network and is connected to a
DEFINITY switch, select Legend-PBX. If the switch is connected to
another MERLIN LEGEND system, one switch must be configured
as Legend-PBX and the other is configured as Legend-NTWK. See
the
Network Reference
for more information.
4. Under the Frame Format heading, change the factory setting by checking
the Extended Superframe (ESF) box.
5. Under the Suppression (Line Code) heading, change the factory setting by
checking the B8ZS box.
6. Under the Signaling Mode heading, check Common-Channel Signaling
(CCS).
NOTE:
CCS is automatically assigned when PRI is selected. Also,
Channel 24 cannot be used for voice or data transmissions.