Lucent Technologies MERLIN LEGEND Release 5.0 Feature Reference page 106

MERLIN LEGEND Communications System Release 5.0
Feature Reference 555-650-110
Features
Automatic Route Selection
NOTE:
If a voice call is queued for callback on a digital pool, it can get stuck in an
infinite loop of queuing. The caller hears a continuous stutter tone and
cannot get rid of it. To avoid this situation, be certain to correctly program
the voice and/or data capabilities of pools of PRI and BRI facilities in the
ARS tables.
Any remaining eligible routes are scanned from the beginning of the list. The first
eligible route that is not busy is selected. If all eligible routes are busy, the user
hears fast busy and can use Callback to queue the call for the first route only.
Emergency numbers must be on an Allowed List to be called from a restricted
extension.
Considerations and Constraints
ARS restrictions (FRLs) operate independently of dial-access-to-pool restrictions,
providing greater flexibility in assigning the type of usage an extension is allowed.
The international dialing code (011) can be included in any fully programmable
table. If this is done, calls beginning with 011 are routed according to the table on
which 011 is entered, and not according to the Dial 0 Table.
The wild card character (Pause) cannot be used in system programming to enter
area codes and/or exchanges in ARS tables.
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.
Even if the local telephone company does not require it, callers must dial
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
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.
1
Area Codes 800 and 900 are treated as entries in programmable tables. They
may be programmed as either area codes or as exchanges.
3
(end of dialing) to indicate whether a
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Issue 1
June 1997
Page 74
before
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