Panasonic KX-TDA100 Features Manual page 259

c) Blocking of Trunk Call through Other PBXs and How to Override It
To prohibit a TIE line call to go through PBX-2 for making a trunk call, if PBX-2
is Panasonic Hybrid IP-PBX (e.g., KX-TDA100 or KX-TDA200), PBX-2 should
disable the trunk group of the outgoing call from PBX-2 against the COS of the
trunk group of the incoming call to PBX-2 (
the programming example shown below. TRS/Barring applies to a TIE line call
on a COS of the trunk group of the incoming call basis. To override this
prohibition, access the DISA floating extension number of PBX-2 and enter a
verified code to change the COS temporarily.
[Programming Example of PBX-2]
Trunk Group No.
1
2
3
:
TRG of Incoming
Call
COS 1
COS 2
COS 3
:
: Block
COS No.
3
2
2
:
Outgoing Call
TRG 1 TRG 2 TRG 3
: : :
1.28 Networking Features
Trunk Group Number [500]) like
...
:
Feature Guide 259