Panasonic KX-NS1000 Manual page 387

Trunk-to-TIE-to-Trunk Access
An outside caller can be connected to an outside party through the TIE line by using the DISA feature.
[Example]
Telephone Company
(area code: 09)
Trunk
PBX-Code 951
Outside Caller
Dials "(DISA phone
number)-9-01-23-
4567".
Explanation:
1.
The outside caller dials the "DISA phone number of PBX-1", Idle Line Access number of PBX-1 "9", and
telephone number "01-23-4567".
2.
PBX-1 modifies the call (adds "952" and the Idle Line Access number of PBX-2 "9") and sends the call to
PBX-2 which has PBX code "952" through the TIE line (trunk group [TRG] 2) according to the ARS
programming of PBX-1.
3.
PBX-2 sends the modified call to the outside party "23-4567" according to its ARS programming.
Trunk
TIE Line Network
PBX-1
952-9-01-23-4567
TIE Line
DISA Interface
TRG 2
Extn. 1011
Telephone Company
(area code: 01)
Trunk 23-4567
PBX-2
PBX-Code 952
Interface
Outside Party
(23-4567)
Extn. 1011
4.3.1 TIE Line Service
Trunk
Feature Guide 387