Digit Forwarding

Digit Forwarding
If you need more control over the digits that are being transmitted to the PSTN, you can
use digit forwarding.
Digit forwarding specifies the number of digits that must be forwarded to the telephony
interface, regardless of whether they match explicitly or with wildcards. When a specific
number of digits are configured for forwarding, the count is right-justified. For example,
in Figure 7-3, the POTS dial peer has a destination pattern configured to match all extensions
in the 1000 range. By default, only the last three digits are forwarded to the PBX
that is connected to the specified voice port. If the PBX needs all four digits to route the
call, you could use the commands forward-digits 4 or forward-digits all so the appropriate
number of digits are forwarded.
Chapter 7: Configuring Advanced Dial Plans 373
Ext.1234 PBX
V
dial-peer voice 1000 pots
destination-pattern 1…
dial-peer voice 1000 pots
destination-pattern 1…
forward-digits 4
Dialed Number:
1234
Transmitted Number:
234
Dialed Number:
1234
Transmitted Number:
1234
Figure 7-3 Digit Forwarding Example
Note Digit forwarding applies only to POTS dial peers.