Panasonic KX-TDA30 Features Manual page 285

Case 1:
Extension 1012 of PBX-1 dials extension number "2011".
→ Extension 1012 of PBX-1 is connected to extension 2011 of PBX-2.
Case 2:
Extension 1011 of PBX-1 dials extension number "3011".
→ Extension 1011 of PBX-1 is connected to extension 3011 of PBX-3.
b)
PBX Code Method (Access with PBX Code)
Dial the [TIE Line Access Number] + [PBX Code] + [Extension Number].
[Example]
PBX-1
PBX Code 951
Extn.1011
Dials "7-953-1011".
Explanation:
To use this method, it is necessary to know each PBX code in order to identify the location of an
extension.
Case 1:
Extension 1012 of PBX-1 dials TIE line access number "7", PBX code "952", and extension
number "1011".
→ Extension 1012 of PBX-1 is connected to extension 1011 of PBX-2.
Case 2:
Extension 1011 of PBX-1 dials TIE line access number "7", PBX code "953", and extension
number "1011".
→ Extension 1011 of PBX-1 is connected to extension 1011 of PBX-3.
PBX Code 952
TIE Line
Interface Interface Interface
Extn.1012
Extn. 1011
Dials "7-952-1011".
[PBX code]
[TIE line
access no.]
[Extn. no.]
PBX-2
TIE Line
1.29 Networking Features
PBX-3
PBX Code 953
Interface
Extn. 1011
Feature Guide 285