MERLIN LEGEND Communications System Release 5.0
Feature Reference
555-650-110
Issue 1
June 1997
Features
Page 462
Primary Rate Interface (PRI) and T1
that DID calls are not permitted to reach (for example, pool access codes, group
page codes, line access codes, or the ARS access code), the call is routed to the
programmed destination for unassigned DID calls (unless the backup is a fast
busy tone).
is a sample Dial-Plan Routing Table. Note that in the sample table all
incoming calls through the Megacom 800 service are delivered to an extension
whose dial-plan number is 1234. Entry 15 would be skipped because No Service
is specified.
Table 32.
Sample PRI Dial-Plan Routing Table
When routing by dial plan is used for an incoming call, if the programmed service,
number of digits in the Called Party Number (CdPN) and patterns match those
associated with the incoming call, the appropriate digit deletion and addition are
performed. The process is as follows:
1.
The programmed service is compared with the B-channel service, if
supplied. A match is found if the two services are equivalent or if the
programmed service in the Dial-Plan Routing Table is All Services. If a
match is found, the system continues to search the entry. If no match is
found or if No Service is specified, the system skips the entry and proceeds
to the next one. If no service is supplied, the call is matched to No Service
table entries.
2.
The programmed number of digits is compared with the number of digits in
the actual Called Party Number. A match is found if the two numbers are
equivalent or if the programmed number of digits is 0. If a match is found,
the system continues to search the entry. If no match is found, the system
skips the entry and proceeds to the next one. If the programmed number of
digits is 0, any number of digits in the Called Party Number is acceptable.
3.
The programmed pattern is compared with the digits associated with the
incoming call. If the pattern matches, the entry is tagged as a possible best
match for the incoming call. It is possible that more than one entry can
match the incoming call; the entry chosen is the one that matches on the
greatest number of digits in the pattern. For example, if 555-2000 is the
Called Party Number and the two patterns that match are 555 and 5552,
the entry associated with 5552 is chosen as the best match. If the pattern is
not programmed, it is considered a match with the number of digits in the
pattern equal to 0.
Entry
0
1
2
3
... 15
Service
SDN
SDN
MEG800
No Service
# of digits in CdPN
7
10
10
[not specified]
Example #
555-1234
908-555-1234
Pattern
555
[none]
[none]
[none]
Digit deletion
3
6
10
14
Digit addition
[none]
[none]
1234
0