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MERLIN LEGEND Communications System Release 6.1
Network Reference
555-661-150
Issue 1
August 1998
Network Management
Page 5-19Switch Identifiers
5
Switch Identifiers 5
If your system uses private tandem trunks, you
must
program switch identifiers.
Switch identifiers are 1- or 2-digit numbers that are used by the system to identify
transmission levels and check routing. Switch identifiers indicate the switch
connected to the far end of a local private trunk.
Switch identifiers appear in print reports. You can use Next to see the switch
identifiers for all trunks. To see a report showing switch identifiers, select the
3ULQW option on the System Programming menu and then choose7UXQNLQIR
and *HQHUDl. See Appendix B for an example of the General Trunk Information
report. The switch identifier appears in the “Extern Switch” column.
Planning Guidelines 5
The procedures in this topic allow you to add, change, and remove switch
identifiers.
PSTN trunks connected to your local system do not require identifiers. They are,
by default, not assigned an identifier.
When a private networked trunk is deleted, either via DS1 programming or by the
Board Renumber procedure, all switch identifiers in the system need to be
examined and reprogrammed as needed. Newly added private network trunks
need to be programmed with new switch identifiers.
You can assign a switch identifier to a block of trunks. You can also remove a
switch identifier from a block of trunks that use the same switch identifier.
The correct switch identifier for a trunk or block of trunks is determined by the type
of switch to which the trunk is connected and whether or not that switch is a
satellite
switch (located within 200 miles of the local system). It is important to
know the distance between systems in order to assure transmission quality. The
identifiers are switch numbers that have the following meanings:
■ Unassigned, no value = trunk connected to CO (central office)
■ 1–20 = trunk connected to a non-satellite MERLIN LEGEND
Communications System
■ 21–40 = trunk connected to a satellite MERLIN LEGEND Communications
System
■ 41–50 = trunk connected to a non-satellite system that is not a MERLIN
LEGEND Communications System (for example, a DEFINITY ECS)
■ 51–60 = trunk connected to a satellite system that is not a MERLIN
LEGEND Communications System (for example, a DEFINITY ProLogix
Solutions communications system)