AT&T MERLIN LEGEND Release 4.0 Feature Reference page 434

Feature Reference
Dial Mode
The dial mode must be set for incoming calls (inmode) and outgoing calls
(outmode). The dial mode (inmode or outmode) can be set to either Rotary
(factory setting) or Touch-Tone. Touch-Tone Receivers are required on the
remote communications system when the setting is set to Touch-Tone.
Dial Tone
The dial tone can be set to one of the following settings:
Remote (factory setting). The system sends dial tone to callers.
Local. The system does not send dial tone to callers.
Answer Supervision Timing
Answer Supervision Timing sets a limit in milliseconds that an answer
supervision signal must be present to be considered valid. The timing can be
set to any value in increments of 20 ms from 20 to 4800 ms. The factory setting
is 300 ms.
Disconnect Timing
Disconnect Timing sets a limit in milliseconds that a disconnect signal must be
present to be considered valid. The timing can be set to any value in increments
of 20 ms from 140 to 4800 ms. The factory setting is 300 ms.
T1 Routing by Dial Plan
Beginning with Release 4.0, Routing by Dial Plan is available on Switched 56
services offered on T1 connections.
Service providers offer Digit Outpulsing for their T1 Switched 56 services. With
Digit Outpulsing, the central office sends a number of digits to the MERLIN
LEGEND Communications System. When ordering the service the system
administrator must choose how many digits are to be sent to the
communications system. Generally, the default number of outpulsed digits is
four, however the system administrator may choose three digit outpulsing, which
can be accepted by the MERLIN LEGEND Communications System for
Switched 56 services.
In many cases the digits that are sent from the service provider may not match
the MERLIN LEGEND Communications System dial plan. In these cases, the
digits can be manipulated by absorption, deletion, or addition of digits. The
system manager can also renumber a block of dial plan numbers on the
communications system through system programming to match the outpulsed
digits.
With this enhancement, you can have multiple telephone numbers used on a
single T1 Switched 56 line. For example, you could have three ACCUNET
Switched 56 Services channels on a T1 trunk with 10 different numbers on each
channel. This allows 30 different (non-simultaneous) callers with unique
numbers to call into the communications system and reach 30 different data
extensions.
434
Primary Rate Interface (PRI) and T1