To limit fixed-line and mobile phones in a certain area, take the Beijing area as an example:
Open the landing gateway in the VOS client → Settings → Edit → Landing Prefix, and the landing called prefix is forbidden.
Open the landing gateway in the VOS client → Add settings → Edit → Domestic business → Mobile area restrictions, 10 can be disabled.
PS: This function needs to be imported into the mobile phone area table beforehand.
PS: If the incoming number has a special prefix, such as 667701086681234 (6677 is a special prefix), click Business Management → Softswitch Management → Edit → System Parameters, and find the “non-standard E164 prefix comma interval multiple prefix” item. Add 6677 to the parameter value, and the rest of the settings are the same as the above without a special prefix. As shown below: