SIP scammers and transfer

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MB..:
Just to remind you that
in the service provider settings you can use X_AccessList to limit the IP addresses that can call you - not sure if this is a fixed set for CallCentricunless you are distributing your SIP URI to people, there's no reason to use the default port of 5060 - this will eliminate a lot of hack attempts.
The SPA3102 has a setting for only accepting SIP calls from the IP address it is registered to. Don't think there's an equivalent with Obi but there might be.

lacibaci:
I agree X_AccessList would be the best solution.  However, Callcentric uses 500 IPs so unfortunately that rules this out.

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