Yealink SIP-T54S Administrator's Manual page 543

Web User Interface
Details of Configuration Parameter:
Parameter
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 = ,-
If you dial 3-61, the IP phone will filter the character -, and then dial out 361.
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:
Click on Features->General Information.
1.
Configuring Basic Features
features.call_num_filter
Configure the characters the IP phone
filters when dialing.
Navigate to:
http://<phoneIPAddress>/servlet?p=fea
tures-general&q=load
Permitted Values
String within 99 characters
Default
,-( )
517