Yealink SIP-T2 SERIES Administrator's Manual page 457

Details of Configuration Parameters:
Parameters
features.call_num_filter
Description:
Configures the characters the IP phone filters when dialing.
If the dialed number contains configured characters, the IP phone will automatically
filter these characters when dialing.
Example:
features.call_num_filter = ,-12
If you dial 3-61, the IP phone will filter the characters – and 1, and then dial out 36.
Note: If it is left blank, the IP phone will not automatically filter any characters when
dialing. If you want to filter just a space, you have to set the value to ― ,‖ (a space
first followed by a comma).
Web User Interface:
Features->General Information->Call Number Filter
Phone User Interface:
None
To configure the characters the IP phone will filter via web user interface:
1. Click on Feature->General Information.
Configuring Basic Features
http://<phoneIPAddress>/servlet?m
=mod_data&p=features-general&q
=load
Permitted Values
String within 99 characters
Default
,-
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