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MERLIN LEGEND Communications System Release 6.1
Network Reference
555-661-150
Issue 1
August 1998
Network Management
Page 5-2General Programming in Private Networks
5
General Programming in Private
Networks 5
This section outlines system features and programming options that may need
adjustment or special planning when your system is included in a private network.
This section includes the following topics:
■ Pool Assignment
■ Automatic Route Selection (ARS)
■ Remote Access without Barrier Codes
■ Clock Synchronization
■ System Date and Time
■ Tie Trunks
■ Direct Inward Dialing (DID) Trunks
■ For Release 6.1 and later, calling groups used for coverage to a non-local
extension or calling group to route calls to centralized VMS/AA, non-local
QCC, or other non-local facilities
Pool Assignment 5
All tandem trunks must be assigned to pools. If tandem PRI trunk pools are
available, these should be assigned to Route 1 in UDP patterns. For programming
procedures, see “Trunks to Pools Assignment” in
System Programming.
For 10xxx and 101xxxx equal access Interexchange Carrier (IXC), Dial 0, and N11
(for example, 411 or 911) calls from a collocated private networked system that is
not connected to the PSTN, the tandem trunks must be assigned to the main pool
so that these calls can be routed across the private network to another system’s
public switched telephone network (PSTN) trunks. For equal access calls, the
system automatically prepends the local ARS access code, which
must
match the
ARS code of the non-local system. For Dial 0 and the Special Numbers table, the
ARS code must be prepended.
CAUTION:
!
Unless private networked systems are collocated, each system
should have at least one loop-start line connected to the PSTN. The
line is required to allow connection of a power-failure telephone to the
Power-Failure Transfer (PFT) jack on a module as a power outage
backup and for correct routing of emergency and other N11 calls. To
ensure that the correct services are reached, if the loop-start line is
used for emergency or other N11 calls, it should be assigned to the
main pool. In this case, IXC calls determine the number of loop-starts
required. Refer to
Feature Reference
guide for details on the PFT
feature.