Extension Number Method (Access Without Pbx Code) - Panasonic KX-TDA100 Features Manual

Feature References
1.1.1.5 Intercept Routing
1.3.1.2 Call Forwarding (FWD)
1.5.5.3 CO Line Access
1.9.1 Automatic Route Selection (ARS)
1.11.1 Call Transfer
1.15.6 Direct Inward System Access (DISA)
2.3.5 Flexible Numbering/Fixed Numbering
Operation References
1.2.1 Basic Calling

1.27.1.3 Extension Number Method (Access without PBX Code)

Description
PBXs can be distinguished from each other on a private network by the extension numbers they use. When
a PBX makes or receives a TIE line call that contains an extension number, it can recognize right away if it
should handle the call itself, or pass it on to another PBX. If each extension on a private network has a
unique number, calling extensions in other PBXs can be greatly simplified.
Making or receiving calls via TIE line between PBXs that rely on unique extension numbers to distinguish
themselves is called "Extension Number Method (Access without PBX Code)".
1.
Programming for Extension Number Method (Access without PBX Code)
Each PBX in the private network will refer to some or all of following tables when making and receiving
calls via TIE line using Extension Number Method (Access without PBX Code).
TIE Line Routing and Modification Table
This table is used when a PBX makes a call to another PBX, or passes a received call on to another
PBX. It contains leading numbers as well as routing instructions for each leading number; it controls
which calls are sent on which TIE lines.
Use this table to store the first few digits (leading digits) of the extension numbers used by other PBXs
on the private network, the lines which can be used when sending calls to each PBX, and, if necessary,
a method to modify dialed numbers before sending them down the TIE line.
When a PBX is about to send a number down a TIE line, it checks the number and finds the
preprogrammed leading digits of that number in this table. It then checks the highest-priority (most
preferred) CO line group assigned to that leading number. When it finds a line within the highest-priority
CO line group that is available, it modifies the number as if programmed to do so. After modification,
the number is sent down the line.
Incoming Number Modification Table
This table is referred to when a call is received on a TIE line.
When a PBX receives a call on a TIE line, it searches the Incoming Number Modification Table for
instructions on how to modify the received telephone number depending on which CO line the call was
received.
1.27 Networking Features
Feature Guide 207