Mike's PBX Cookbook

Trunk Group Restrictions (TGAR)

If a direct access code (ACOD) is used to access a route then the access restrictions to that route are controlled by TGAR (Trunk Group Access Restrictions) and TARG (Trunk Access Restriction Group). This also applies if LD 86 ESN, TGAR is YES (not set by default).

telephone.png
LD 11: TGAR

The golden rule:

If TGAR = TARG, access is blocked!
poles.png
LD 16: TARG

Below changes a routes access restrictions (TARG) so that sets with a TGAR of 1, 2 or 3 cannot access the route, but sets with any other TGAR can. Remember, if TGAR = TARG, the call is blocked, if TGAR ≠ TARG, the call is allowed. Only an exact match matters.

Changes are made to the Route Data Block (RDB) in LD 16. The RDB is printed in LD 21.
As always, hit enter at prompts you don't want to change - we only change TARG below (prefix a value with 'x' to remove it).

>ld 16
RDB000
MEM AVAIL: (U/P): 1094214    USED: 265657    TOT: 1359871
DISK RECS AVAIL: 2752
REQ  chg
TYPE rdb
CUST 0
ROUT 3
TKTP                  <enter> all the way down to TARG...
:
STEP
ACOD
TARG 1 2 3            add or remove TGARs, separated by space, prefix with 'x' to remove
BILN
:                     hit <enter> until finished
:

MEM AVAIL: (U/P): 1094214    USED: 265657    TOT: 1359871
DISK RECS AVAIL: 2752
REQ****

A set with TGAR 0, NCOS 7, and CLS UNR is not restricted, and should be free to dial anything! See: CLS Access Restrictions.