Service Line/Disconnect Service Line - Paradyne Comsphere 3920Plus Installation And Operation Manual

Service Line/Disconnect Service Line

The Service Line/Disconnect Service Line is only available in Model 3921-B1-001.
The Service Line function allows you to switch a specific Model 3921Plus installed in a
COMSPHERE 3000 Series Carrier from normal leased or dial operation to service-line operation.
This switch only places the modem on the service line. For a connection to be established, you
must still use the normal dialing methods as described earlier in this chapter in the Call Setup
Branch section.
A service line is an extra dial line connected to a COMSPHERE 3000 Series Carrier. This line is
normally shared by up to four Model 3921Plus modems installed in either Slots 1–7 or Slots 9–15.
However, by daisy chaining the service-line connector of one Network Interface Module (NIM) to
the service line of another NIM installed in the same carrier, you can permit all 8 modems to share
one service line. The service line can also be extended to other carriers in a cabinet. For more
information on daisy chaining NIMs to the service line, refer to the COMSPHERE 3000 Series
Carrier, Installation Manual.
A service line is ideal for a dial backup of Model 3921Plus modems operating on leased lines.
Remember that a service line can back up only one failed leased line at a time.
To enable service line from the Control branch, make the following selections:
Press the
Press F1 (Service_Line) to switch the modem from its normal dial line to the service line.
The message Command Complete appears. Now, when the modem places a call, instead of using
the dial, the call is placed on the service line.
To disconnect the modem from the service line and resume normal operation, press the
(returning to Control branch). From the Control branch, press the
appears.
Press F1 (DiscServiceLine). The call and service line disconnect and the message Command
Complete appears.
3920-A2-GN31-10
key until Service Line appears.
Control:
Service_Line
F1 F2 F3
Service_Line
Command Complete
F1 F2 F3
Control:
DiscServiceLine
F1 F2 F3
April 1995
DCP Operation
key
key until DiscServiceLine
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