Mike's PBX Cookbook

CLS Access Restrictions

Station class of service (CLS) trunk access restrictions, set in LD 10 (analog sets) and LD 11 (digital sets).

CLS UNRCTD/CUNTLDSREFREFR1FR2
Incoming
Trunk Calls
YesYesYesYesVia Call
Modification **
NoNo
Outgoing
Non-Toll
Trunk Calls
YesYesYesVia Attendant
- or -
UNR Station *
Via UNR
Station *
NoNo
Outgoing
Toll Trunk
(0 or 1+ on
COT or FEX)
YesVia
BARS/NARS
Via Attendant
- or -
Station *
NoNo
To/From
Tie Trunk
YesYesYesYesYesYesNo
To/From
Internal
YesYesYesYesYesYesYes
BARS/NARS
TGAR=(No) ***
Uses NCOS
only
Uses NCOS
only
Uses NCOS
and CLS
Uses NCOS
and CLS
Uses NCOS
and CLS
Uses NCOS
and CLS
Uses NCOS
and CLS
BARS/NARS
TGAR=Yes ***
Uses NCOS
and TGAR
Uses NCOS
and TGAR
Uses NCOS,
CLS, & TGAR
Uses NCOS
CLS & TGAR
Uses NCOS
CLS & TGAR
Uses NCOS,
CLS & TGAR
Uses CLS
only

Access Restrictions:
UNR - Unrestricted
CTD - Conditionally Toll Denied (default)
CUN - Conditionally Unrestricted
TLD - Toll Denied
SRE - Semi-Restricted
FRE - Fully Restricted
FR1 - Fully Restricted 1
FR2 - Fully Restricted 2
Key
Direct Access
Indirect Access
No access
Notes:
* Via Call Modification: TRN, CONF, etc.
** TAFAS, Call Pickup, TRN
*** LD 86: ESN, check TGAR (NO) YES
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