<PBX Code Method (Access with PBX Code)>
TIE Line Network
TIE Line
952-9-211-4567
211-4567
Outside Party
Interface
Extn. 1011
CO Line CO Line
Dials "9-211-4567".
(211-4567)
Telephone Company
PBX-1
PBX Code 951
PBX-2
PBX Code 952
Interface
TRG 2
Extn. 1011
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 "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 call to the outside party "211-4567".
c. Blocking CO line calls made through another PBX and how to override it:
Whether an incoming TIE line call can make a CO line call through this PBX (i.e., PBX-2), depends on
the COS that is assigned to the trunk group of this PBX, that the incoming TIE line is connected to. If
the COS of the trunk group is unable to make outgoing calls by the TRS or External Call Block feature,
CO line calls made through this PBX will be prohibited.
To override this prohibition, an extension of PBX-1 must enter a verification code assigned to PBX-2
to change the COS temporarily. It is also possible to override the prohibition by specifying an extension
at PBX-2 with the Walking COS feature, to temporarily switch to that extension’s COS.
4.11 [2-7-1] Class of Service—COS Settings—TRS— TRS Level—Day, Lunch, Break, Night
4.12 [2-7-2] Class of Service—External Call Block
5.1 [3-1-1] Trunk Group—TRG Settings—Main— COS
8.3 [6-3] Verification Code
[500] Trunk Group Number
Document Version 2008-11 Feature Manual 231
13.1.13 PRIVATE NETWORK FEATURES