1.25 Networking Features
204 Feature Guide
Explanation:
PBX-1 makes a call.
Extension 1001 of PBX-1 dials "2001".
1. PBX-1 checks its Extension Numbering Plan. "2001" is not one of its extensions.
2. PBX-1 checks its Other PBX Extension list, and finds an extension "2001".
3. PBX-1 checks its TIE Line Routing and Modification Table (not shown here). Finds
leading number "2". No modification is programmed.
4. Sends the call down the TIE line.
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 "2001".
2. PBX-2 checks its Extension Numbering Plan. "2001" is one of its extensions.
3. PBX-2 sends the call to extension 2001.
4. Calls directed to extension 2001 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 2001. The destination is programmed as "9-
12125551234".
b) The extension 2001 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 Idle Line Access
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
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