MERLIN LEGEND Communications System Release 6.1
Feature Reference
555-661-110
Issue 1
August 1998
Features
Page 80Automatic Route Selection
Calls made to the equal access code (10
xxx
) are always routed immediately over
the main pool, whether or not they appear in other ARS tables. People who are
restricted from using a particular ARS route hear a high-low error tone, indicating
that the call cannot be completed.
NOTE:
In Release 6.0 and later systems, special planning is required for equal
access calls (also called
IXC
or
Interexchange
calls), N11 calls, and Dial 0
calls from systems that are not connected to the public switched telephone
network. See “Tandem Switching” on page 671
for details.
Even if the local telephone company does not require it, callers must dial
before
any 10-digit telephone number, so that ARS can determine whether a call is toll or
local. If the 1 is not required by the local central office, the system may be
programmed to ignore it.
Some central offices still require the prefix 1 for dialing certain exchanges. If the
1 + 7-Digit Dialing Requirements option is programmed as Within Area Code, the
system expects either dial time-out or a
(end of dialing) to indicate whether a
1 + 7-digit or a 1 + 10-digit number has been dialed. (This may result in delays
while the user waits for time-out.) To avoid time-out delays, 1 + 7-Digit Dialing
Requirements can be programmed as Not Within Area Code, but all exchanges
requiring a system-prefixed 1 must be listed in a local exchange table, and the 1
must be specified as a character to be prefixed. In this case, users must not dial
the
before dialing those exchanges.
Area Codes 800 and 900 are treated as entries in programmable tables. They
may be programmed as either area codes or as exchanges.
Mode Differences 3
ARS is available only in Hybrid/PBX mode.
Feature Interactions 3
Account Code Entry When ARS is used on the system, an account code can be entered
before or after dialing the telephone number.
If Forced Account Code Entry is assigned to the extension, the caller
must enter the code before dialing the ARS dial-out code.
Allowed/
Disallowed Lists
ARS checks Allowed and Disallowed Lists before choosing the route for a
call. This prevents users with restricted extensions from dialing numbers
that are not on an Allowed List. ARS also prevents a user from dialing
numbers on a Disallowed List.
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