MERLIN LEGEND Communications System Release 6.1
Feature Reference
555-661-110
Issue 1
August 1998
Features
Page 518Primary Rate Interface (PRI) and T1
Outgoing calls can be made by accessing a personal line, a Pool, or ARS. When a
call is placed, the system determines whether the line accessed is a PRI facility. If
so, the system performs digit analysis with the entries in the Network Selection
Table (see Table 34, page 518
) and the Special Services Selection Table. The
Network Selection table lists the prefixes for dial access to alternative long-
distance carriers (for example, 10
xxx
). The Special Services Selection Table (see
Table 35
) lists prefixes that represent special services, such as operator service
or international dialing (
or).
In addition, if the B-channel group for an outgoing call is programmed for call-by-
call service selection, the system performs
digit analysis
, with the entries in the
Call-by-Call Services Table (see Table 36, page 520
). The entries in this table
indicate the service and tell the system how to delete digits and successfully route
an outgoing call.
A sample of each of these tables follows. Refer to
System Programming
for
information about programming these tables.
Network Selection Table. The Network Selection table lists the prefixes for dial
access to alternative long-distance carriers (for example, 10
xxx
). If multiple
entries in the Network Selection Table match the dialed number, the one with the
most non-wild card digits prevails. If the first digits of a dialed number (on PRI)
match any entry in this table, the entry pattern is deleted from the dialed number
and the number represented by the asterisks is used as the network selected.
Characteristics and valid entries for the Network Selection table are as follows:
■ There can be up to four entries (0 through 3).
■ The pattern can be up to eight digits.
■ An asterisk () is a wild card.
■ The pattern cannot begin with an asterisk but must contain at least one.
■ All asterisks must be at the end of the pattern and contiguous.
Table 34. Sample Network Selection Table
The Special Services Selection Table (see Table 35), lists prefixes that represent
special services, such as operator service or international dialing (
or). If
multiple entries in the Special Services Selection Table match the dialed number,
the one with the most digits prevails. Characteristics and valid entries are as
follows:
■ There can be up to eight entries (0 through 7).
■ The pattern can be up to four digits (no wild cards).
Entry Number
0123
Pattern 101**** 10***
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