1.25 Networking Features
Feature Guide 195
Explanation:
PBX-1 makes a call.
Extension 1001 of PBX-1 dials the TIE Line Access number "7", the PBX code "902", and an
extension number "1001".
1. The TIE Line Access number was dialed, therefore PBX-1 checks its TIE Line Routing
and Modification Table (not shown here). Finds leading number "902". 1st priority CO line
group is "1". No modification is programmed.
2. PBX-1 removes the TIE Line Access number and sends the remaining digits down the
TIE line via CO line group 1. The number is now "902-1001".
PBX-2 receives the call.
1. PBX-2 checks its Incoming Number Modification Table (not shown here). No modification
is programmed. The number is still "902-1001".
2. PBX-2 removes its own PBX code "902" and sends the call to extension 1001.
3. Calls directed to extension 1001 are redirected to the outside party (1-212-555-1234)
because of one of the following:
a. This number is programmed (not shown here) as the FWD or Intercept Routing
destination for calls to extension 1001. The destination is programmed as "9-
12125551234".
b. The extension 1001 user transferred the call to the outside party by dialing "9-
12125551234".
3.3. CO-to-TIE-to-CO Line Calls
An incoming CO line call can be routed to the DISA feature of a PBX, then the caller can make a
CO line call which is routed via ARS through another PBX.
[Example]
Explanation:
The outside caller dials a telephone number which is routed to the DISA feature of PBX-1, then
dials the Idle Line Access number of PBX-1 "9", followed by the desired outside party's telephone
number (1-212-555-1234).
1. The Idle Line Access number "9" was dialed, therefore PBX-1 modifies the dialed number via
its ARS programming (not shown here). It removes the first digit "9", adds the PBX code and
Idle Line Access number of PBX-2 "902-9", and sends the number down the TIE line to PBX-
2. The number is now "902-9-12125551234".
Outside Party
1-212-555-1234
CO Line
Private Network
Outside Caller
Dials DISA phone number of
PBX-1 + "9-12125551234"
CO Line
Telephone
Company
Telephone
Company
PBX-2PBX-1
DISA
PBX Codes
PBX-1: 901
PBX-2: 902
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