You can block the dialing of SIP URLs via PUI and WUI (phone & web user interface) by turning this setting on or it can be limited to PUI only with value: pui. In both cases only numeric numbers will be allowed as input.
Advanced - Behavior (Tab) - Phone Behavior (Section): Block URL Dialing
N/A
| Parameter | Valid value |
|---|---|
| <block_url_dialing perm="PERMISSIONFLAGS">VALIDVALUE</block_url_dialing> | <on>, <off>, <pui> |