Nortel Communication Server 1000 Manual page 23

the same as the internal extension number. Three facilities exist which
allow conversion of the received digits before they are presented to the
digit translator:
•
Digit Insertion - INST
•
DDI Incoming Digit Conversion - IDC
•
Pretranslation - PREXL
Digit Insertion - INST
A fixed string of up to 8 digits, programmable on a route basis, may be
inserted in front of any received digits on an incoming call.
DDI Incoming Digit Conversion - IDC
This feature allows the private network numbering plan to differ from the
public numbering plan with respect to DDI extensions within the private
network. Each DDI route may have a unique IDC table assigned to it
which will allow full or partial conversion of the received DDI digits. For
more details please refer to Features and Services (NN43001-106).
Pre-translation - PREXL
This feature allows the first dialed digit of a call to be pretranslated
according to a table associated with the terminal originating the call. A
table has 10 entries, one for each possible leading digit, 0 to 9. For each
entry, one of four pretranslation options is possible:
•
Block the call.
•
Delete the leading digit.
•
Pass the leading digit unchanged.
•
Replace the leading digit by another digit sequence up to four digits in
length.
The result of the pretranslation is then processed as a normal directory
number.
All trunks are assigned table 0 (1 is reserved for consoles, and 2-255
for set groupings). For more details, please refer to the Nortel technical
publication Features and Services (NN43001-106).
Nortel Communication Server 1000
DASS2 Fundamentals
NN43001-571 04.01 4 June 2010
Copyright © 2007-2010 Nortel Networks. All Rights Reserved.
Numbering plans for DASS2 routes 23