12-07-2022 01:25 PM
We have 2 MGCP gateways, controlling 3 PRI cards each. We own an entire block of numbers. Is there a way using the MGCP gateway to
12-07-2022 02:28 PM
MGCP just passes the information to CUCM to determine what to do with the call, so, there's no way you can drop anything at the GW if you use MGCP, you would need to migrate to SIP to actually do some call processing at the GW and drop calls there.
If you get a call for a DN that doesn't belong to you, and you route it back to the PSTN, check your CSS and partitions, most likely your inbound CSS has access to route patterns going to the PSTN and that would be caused by whoever configured that. Usually the inbound CSS should only allow internal DNs or other call controls agents for things like toll bypass. I'd also discuss with your telco exactly how they're letting that happen, as inbound routing on those PRIs is your telco's responsibility.
12-07-2022 10:33 PM
Apart from the great advice given by Java you should have a look at this great document by Dan Keller. Blocking Inbound calls to Cisco Unified Communications Manager based on Caller ID
12-08-2022 12:28 AM
Regarding the point number 1, Open a ticket with ISP. it seems they have some routing issues. They should never send calls to your PRI other than your DID range.
Regarding the point number 2 refer the doc @Roger Kallberg shared.
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