Explanation:
An outside caller dials "123-4567". The call reaches the destination (extension 1011 of PBX-1), and
the call is forwarded, transferred, or intercepted to extension "2011" of PBX-2 through the TIE line.
TIE-to-CO Line Access
The PBX sends TIE line calls to the CO lines of another PBX through the TIE lines.
a. CO Line Call through Other PBXs—by Making a TIE Line Call Method
[Example]
<Extension Number Method (Access without PBX Code)>
TIE Line Network
TIE Line
9-211-4567
211-4567
Outside Party
Interface
Extn. 1011
CO Line CO Line
Dials "802-9-211-4567".
(211-4567)
Telephone Company
PBX-1 PBX-2
Interface
TRG 2
Extn. 2011
Explanation:
1. Extension 1011 of PBX-1 dials the Trunk Group Access number of PBX-1 "8", trunk group number
"02" (TRG2), Idle Line Access number of PBX-2 "9", and telephone number "211-4567".
4.8 [2-6-1] Numbering Plan—Main—Features— Trunk Group Access
2. PBX-1 sends the call to PBX-2 through the trunk group (TRG) 2 (TIE line).
3. PBX-2 sends the call to the outside party "211-4567".
228 Feature Manual Document Version 2008-11
13.1.13 PRIVATE NETWORK FEATURES