Limit SBC Registered Users per IP Group, SIP Interface or SRD

It's recommended that you define a maximum number of allowed registered users per IP Group (User-type IP Group), SIP Interface, or SRD. This ensures that illegitimate users are blocked from registering with the IP Group.

To limit number of SBC registered users:
1. Open either the IP Groups table (Setup menu > Signaling & Media tab > Core Identities folder > IP Groups), 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 IP Group, SIP Interface or SRD, in the 'Max. Number of Registered Users' field, enter the maximum number of registered users:

Configuring Maximum Number of Allowed Registered Users

reg_max