Lucent Technologies MERLIN LEGEND Release 7.0 Feature Reference page 609

MERLIN LEGEND Communications System Release 7.0
Feature Reference 555-670-110
Features
Primary Rate Interface (PRI) and T1
In systems that are programmed using a non-uniform extension dialing plan, one
base number may not be able to represent all telephones.
To specify that no telephone number is sent to the network, choose the Do Not
Copy Telephone Number programming option and use the Telephone Number to
Send procedure to ensure that telephone numbers are not assigned to each
channel in the B-channel group. A network option to block presentation of CPN is
also available.
If ARS identifies a call as applying to a call-by-call B-channel group but the
Call-by-Call Services Table does not show a matching digit pattern and bearer
capability, the call is rejected.
Outgoing calls using call-by-call service selection can be made by pressing a line
button, pressing a Pool button, dialing a pool number, or using ARS.
The Call-by-Call Services Table must be programmed for the Call-by-Call Service
Selection feature to take effect. If a service is not specified in the table, the entry is
ignored.
An SMDR record is not recorded for any call on a PRI facility that is shorter than
the programmed SMDR Call Length. Usually, the SMDR Call Length is
programmed to compensate for connection and ringing time of calls on non-PRI
facilities before they are answered. For systems where most lines are PRI lines,
the call length should be programmed for one (1) second.
Feature Interactions
Account Code Entry
Automatic Route
Selection
At an extension assigned to a PRI line, either enter an account code
before the call is made or during the call. Forced account codes must be
entered before the call is made. An account code entered before a call is
treated as a restriction code for all the outgoing calls placed over the PRI
line.
If the SMDR feature is not enabled to record incoming calls, the system
does not accept Account Code Entry information for incoming calls.
An incoming call can access ARS only through remote access,
transferring, or Remote Call Forwarding through ARS. A PRI line can be a
member of a pool accessed through ARS. Before ARS routes a call to a
pool, it determines whether one or more member lines in that pool are
available. If not, it selects an alternative pool so that the call is not
blocked. Even if a B-channel is available when ARS selects a pool with an
available line, there may be none available when it is time to send a setup
message to the network. Or, after the setup message is sent, the network
may determine that the B-channel proposed by the system is not
available. In either case, the call fails and a fast busy tone is heard.
Issue 1
April 1999
549