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MERLIN LEGENDCommunications System Release 6.1
System Planning
555-661-112
Issue 1
August 1998
Lines/Trunks
Page 3-25Selecting Line/Trunk Options
3
Planning Form Instructions 3
On Form 3b (page 1), Incoming Trunks: DS1 Connectivity (100D Module), for
each 100D module in the system:
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 number control unit slot. Use the second box for the second
lowest-numbered slot, and the last box for the highest-numbered
slot.
2. Under Type of Service, check T1 (the factory-setting).
NOTES:
1. For T1 or T1 Switched 56 service, the T1 box must be checked
on the form. (If you leave this blank, and T1 is not specified
during programming, the 100D module will not be programmed.)
2. Steps 3, 4, 5, and 6 must match the service provider settings.
Check with the provider if necessary. See “Obtaining Telephone
Company Information,” in Chapter 1, for more information.
3. In the table under the T1 Trunks heading, write the channel number(s) for
each trunk type and/or, for Tie or All Tie, check the Tie-PBX, Toll, or S56
boxes.
4. Under the Frame Format heading, do
one
of the following:
a. To retain the factory setting, check D4 Compatible.
b. To change the factory setting, check Extended Superframe (ESF).
5. Under the Suppression (Line Code) heading, do
one
of the following:
a. To retain the factory setting, check AMI-ZCS.
b. To change the factory setting, check B8ZS.
6. Under the Signaling Mode heading, for all boxes that describe T1 modules,
do
one
of the following:
a. To retain the factory setting of robbed-bit signaling, check
Robbed-Bit Signaling (RBS).
b. To change the factory setting to common-channel signaling, check
Common-Channel Signaling (CCS).
7. Under the Line Compensation heading:
a. Fill in the approximate distance (number of cable feet) between the
100D module and its channel service unit (CSU) or other far-end
connection in the space provided next to Cable Feet.
b. Use Table 3–3
to select the Line Compensation setting needed.
(The factory setting is 1.)