MERLIN LEGEND Communications System Release 6.1
Feature Reference
555-661-110
Issue 1
August 1998
Features
Page 73Automatic Route Selection
and Pause. For Release 6.0 or later systems (Hybrid/PBX mode only), refer to the
Network Reference
for information on prepended digits for private network calls.
ARS also provides an absorb (ignore) digit capability for each route. For example,
if the central office (CO) does not require 1 before an area code, the system can
be programmed to ignore that first digit. Up to 11 characters can be automatically
absorbed when a user dials a number. For 10-digit toll calls, the prefix 1
must
be
dialed to signal a toll call to ARS. If the central office does not require the prefix 1
for toll calls, the digit absorption feature may be used to eliminate the prefix as the
number is dialed. Initially, all 20 tables are available for the call.
Star Codes and Automatic Route Selection 2
In some instances, after a user dials a star code (a star character followed by a 2-
or 3-digit number) the central office provides a second dial tone as a prompt for
the dialer to enter more digits. Usually, this second dial tone is immediate.
However, in cases when the second dial tone is delayed, calls can be misrouted
or dishonest users may be able to circumvent communications system dialing
restrictions. (For more information about using Allowed and Disallowed Lists to
restrict star codes, see “Allowed/Disallowed Lists” on page 36
.)
In Release 3.1 and later systems, ARS processes star codes at the beginning of a
dialed number and sends the digits to the CO before any other digit analysis
occurs. Any programmed prepended digits are added after the star code and
before the rest of the telephone number.
ARS cannot route calls that consist only of a star code with no additional digits
(such as
for voice-activated dialing) because the user has not dialed any
digits that the system can use to choose a route.
Dialing calls with star codes using ARS can cause dropped or misrouted calls
when prepended digits are used to select facilities other than regular central office
lines/trunks. It is recommended that ARS calls containing star codes not be used
in configurations where the MERLIN LEGEND Communications System is behind
another switch or is used to select nonstandard facilities. For Release 6.0 or later
systems (Hybrid/PBX mode only), star codes are not sent over the network.
ARS Restrictions for VMI Ports 2
In Release 3.1 and later systems, any port programmed as a VMI port is
programmed with a FRL of 0. If the system manager wants to allow access to the
voice messaging system Outcalling feature, the FRL applies to Outcalling calls.
If the system manager changes a VMI port to a non-VMI port, the FRL is not
reassigned on the port. If the default FRL should be changed, the system
manager must change it through system programming.
SECURITYlALERT:
!
Any changes to the FRL and other restrictions of these ports must be
considered carefully in order to minimize the potential for toll fraud.
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