Nortel Meridian 1 Planning And Installation Manual page 401

Page 380 of 590
Table 74
ART matrix
Incoming
ART
553-3021-209 Standard 1.00
Appendix A – General information for the United Kingdom
The incoming and outgoing ART values are used as references into the ART
matrix. The identified element of the matrix indicates if barring applies for
ART-Incoming --> ART-Outgoing.
0
0 1
1
2
3
63
0 = allowed
1 = blocked
Trunk Barring: Example
The easiest use of the trunk barring feature to prevent PSTN to PSTN
connections requires the following steps:
1 Assign an ART to PSTN trunks
The selected ART must be associated with all PSTN routes on the
system.
Assume that 1 is to be used as the PSTN ART. If route number 9, on
customer 0, is a PSTN route, the following sequence is required in
Overlay 56 to associate the route with the ART 1:
REQ CHG
TYPE ART
CUST 0
ROUT 9
ART 1
July 1999
Outgoing ART
1 2 3
0 0 1
0
1
0 1
63
1