AT&T MERLIN LEGEND Release 4.0 Feature Reference page 438

Feature Reference
Incoming Calls
PRI
When an incoming call is given Routing-by-Dial-Plan treatment, the green LED
associated with the appearance of the line lights steadily; the LED does not
flash to indicate that the trunk is ringing. The green LED associated with the
personal line lights steadily, and ringing on an SA button occurs; the LED does
not flash to indicate that the trunk is ringing.
Routing by Dial Plan requires programming of the Dial Plan Routing Table and
the B-channel group (PRI only) or extension to be routed by dial plan.
Call Management System (CMS) does not support Routing by Dial Plan.
Display support for Routing by Dial Plan is on MLX telephones only.
If the endpoint number for an incoming call given Routing by Dial Plan treatment
is not found, the call is sent to the invalid number destination for DID calls. This
can be a dial plan extension number or fast busy tone. However, if it is fast busy
tone, the call is rejected and the network applies intercept tone.
A PRI line that has been programmed for Routing by Dial Plan should not be
programmed for remote access or Shared System Access.
Outgoing Calls
PRI
When placing a call using a PRI facility, you may want to append the dialed
number with a
causes the call to be immediately placed.
The outgoing telephone number that matches the digit pattern in the Network
Selection Table is deleted automatically. This is not programmable. The
common carrier ID is sent to the foreign exchange.
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 no telephone number is assigned to each
channel in the B-channel group. A network option to block presentation of CPN
is also available.
438
Primary Rate Interface (PRI) and T1

. This signals the facility that the number is complete and