Help > User Interface > Settings > Accounts > SIP accounts > Phone number modification
Phone number modification
Remove dial chars
Characters entered here are removed from the phone number before dialling.
Use country code
Use a default country code for phone numbers that have been saved without a prefix.
A prefix can also be used, e.g. for international phone numbers.
Default country for numbers without country code
Select the required country for the default country code.
Prefix
Enter a specific number (if necessary), to set a prefix before the phone number, as a country code, e.g. 00 for most European countries.
This field can also be used for a particular prefix, e.g. 9for outgoing calls or an outgoing extension.