More and more we hear customers complaining about spam likely calls, There is a way to block these calls based on your dialplan and an IP-2-IP route in the Audiocodes Mediant SBC.
If you are not using the DialPlan you will need to create one first, if you already use a DialPlan we can reuse it.
Navigate to Signalling & Media > SIP Definitions > DialPlan
Click on DialPlan Rule X items > Add a new DialPlan Rule > New
Name = “SPAM call“ Prefix = +31612345678 Tag = Block
Ensure that you associate the DialPlan to the IP Groups.
Navigate to Signalling & Media > Core Entities > IP Groups
Select the IP Groups which is associated with your SIP carrier. Ensure that the DialPlan that we created or reused (in case you already had a DialPlan created), is associated in the IP Groups.
IP to IP Routing
Navigate to Signalling & Media > SBC > Routing > IP-to-IP Routing and click Add New
Name = Block Inbound SPAM Calls Source Tag = Block Destination Type = Internal Internal Action = reply(response=’404′)
Make sure that you move the Blocking rule on the Top of the IP-to-IP rules.
If the caller is trying to make a call from the caller id that we have aded to the DialPlan, the caller will receive a 404 error (Not Found).