Panasonic KX-NCP500 Feature Manual page 241

CO Line Call through Other PBXs—by the ARS feature
[Example]
<Extension Number Method (Access without PBX Code) using ARS>
PBX-1
Interface
Extn. 1011
Dials "9-211-4567".
Explanation:
1.
Extension 1011 of PBX-1 dials the Idle Line Access number of PBX-1 "9" and telephone number
"211-4567".
2.
PBX-1 modifies the call (adds the Idle Line Access number of PBX-2 "9") and sends the call to PBX-2
through the TIE line (trunk group [TRG] 2) according to the ARS programming of PBX-1.
3.
PBX-2 sends the call to the outside party "211-4567".
Document Version 2013-05
CO Line
TIE Line Network
PBX-2
9-211-4567
TIE Line
Interface
TRG 2
Extn. 2011
13.1.15 PRIVATE NETWORK FEATURES
Telephone Company
CO Line
211-4567
Outside Party
(211-4567)
Feature Manual 241