Block Calls from Unregistered Users
Make sure that calls from unregistered users are blocked (rejected) and that calls from only registered users are allowed.
| ➢ | To block calls from unregistered users: |
| 1. | Open the SIP Interfaces table (Setup menu > Signaling & Media tab > Core Identities folder > SIP Interfaces) or SRDs table (Setup menu > Signaling & Media tab > Core Identities folder > SRDs). |
| 2. | For the relevant SIP Interface or SRD, from the 'User Security Mode' drop-down list, select Accept Registered Users: |
Blocking Unregistered Users
