Nortel BCM 3.7, Manual

Page: 346 / 1004

346 Configuring destination codes with wild cards
N0008589 3.3
Notes about the Absorbed length:
The digit absorption setting ( Absorbed Length ) applies to a maximum of two schedules.
Setting Absorbed Length to 0 minimizes the effort involved in preparing destination codes. When
the Absorbed Length is at 0, the actual digits dialed by a caller are preserved in the dialout
sequence. It is not necessary to program a dial out sequence as part of the route.
If rates change depending on the time of the day or week, a different route can be used for the same
destination code when a particular schedule is in use. See
“Programming for least-cost routing” on
page 347 .
Adding Carrier access codes to destination codes
In many cases, long distance service uses the same lines as local service but is switched to a
specific carrier using an access number, which is sometimes referred to as an equal access code
(CAC). Route programming can include the access number so the users do not have to dial it every
time they make a long distance call. The following figure shows an example of how the system
interprets what the user dials into a valid outgoing call.
Figure 105 Carrier code call numbering sequence
User dials
9-1-601-555-2222
9-1-601-555-2222
91 is a destination
code – system uses
Route 001 and Line
Routing tables
absorb 9
1-601-555-2222
Dialout programming tells
the system to add the
access code for long
distance (e.g. 10222)
10222-1-601-555-2222
External lines recognize the
long distance access code
and switch to the appropriate
carrier
1-601-555-2222
Call is directed in
the public system