Lucent Technologies MERLIN LEGEND Release 7.0 Feature Reference page 766

MERLIN LEGEND Communications System Release 7.0
Feature Reference 555-670-110
Features
Tandem Switching
At the system where calls originate, set up the subpatterns for the table. In
doing so, you may wish to check with the non-local system manager to
ensure that the local system routes associated with the primary time period
(sub-pattern A) take advantage of non-local system routes associated with
the secondary time period (sub-pattern B). If the non-local system is in a
different time zone from your own, you may need to take this into
consideration as well. For more information refer to the Network
Reference .
At the system where calls originate, assign appropriate FRLs to the routes
and to the extensions that will use the networked lines. Factory settings do
not restrict toll calls. At the system where calls reach the PSTN, assign an
FRL to the default COR for the type of tandem trunk (non-tie for PRI and tie
for all others). See
''Uniform Dial Plan Features'' on page
the Network Reference .
FRLs are assigned to extensions. These FRLs apply not only to ARS but to
non-local UDP routing as well. Plan UDP, ARS, and extension FRLs
carefully so that extension users can reach non-local extensions as needed
and still be subject to required limitations on toll calling. For more
information about UDP routing, see
741. For more information refer to the Network Reference .
Assign absorbed and other (prepended) digits as required by ARS at each
switch. The local ARS feature must prepend the ARS access code of the
remote system.
Network Calls Routed via the Local System
When non-local users access ARS to dial out over PSTN facilities connected to
your local system or to another system connected to yours, your system uses a
special form of the Remote Access feature to accommodate these calls. Because
calls are routed from one system to one or more other systems, the remote
access settings for this purpose are distinct from the Remote Access feature used
by individuals who enter a barrier code in order to reach an extension or place an
outgoing call on the system.
Non-local users who access your PSTN trunks via ARS and private network
trunks do not dial a remote-access barrier code. For security purposes, the
system applies the default COR calling restrictions that you assign to all tie (T1-
emulated voice or data, or analog) or non-tie (PRI) trunks, ignoring the barrier
code requirement setting. If remote users connect to your system via tandem PRI
facilities, the non-tie restrictions apply; otherwise, the tie restrictions apply. Non-tie
restrictions apply to tandem PRI trunks only, and tie restrictions apply to tandem
tie trunks only. You can program both types of COR if needed, using the following
system programming procedure (refer to System Programming for detailed
instructions).
''Restrictions'' on page 88
741. For more information refer to
''Uniform Dial Plan Features'' on page
April 1999
in the ARS topic and
Issue 1
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