SIP and H.323 filtering

Incoming call blocking is available for SIP and H.323. If you are using SIP, you can allow specific users and block user agents. If you are using H.323, you can allow specific IDs and extensions.

SIP filtering:

  1. Go to Preferences > Anti-Spam Configuration.
  2. In SIP Anti-Spam Configuration, select Enable SIP Anti-Spam.
  3. In Allow SIP Users, enter allowed SIP users.
  4. In Blacklisted SIP User Agents, enter SIP header or software information you want to block.
  5. Click Save.

H.323 filtering:

  1. Go to Preferences > Anti-Spam Configuration.
  2. In H.323 Anti-Spam Configuration, select Enable H.323 Anti-Spam.
  3. In Allowed H.323 IDs, enter allowed H.323 user IDs.
  4. In Allowed H.323 Extensions, enter allowed extensions.
  5. Click Save.