[cisco-voip] Ported to SIP carrier - some calls still coming in old carrier

[Lelio Fulgenzi]

This! So much This!

We stumbled into this when we migrated from one PRI carrier to another. It was my first time, so I didn't know the concept of local routing existed in PSTN as well.


From: cisco-voip <cisco-voip-bounces at puck.nether.net> On Behalf Of NateCCIE
Sent: Thursday, July 8, 2021 12:49 PM
To: 'Riley, Sean' <SRiley at robinsonbradshaw.com>; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Ported to SIP carrier - some calls still coming in old carrier

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A lot of the time the loosing carrier doesn't remove internal translations, so other customers of the losing carrier still come into the old PRI.  You'll need to ask them to clean it up, I don't think I have been patient enough to see it be cleaned up by itself.

-Nate

From: cisco-voip <cisco-voip-bounces at puck.nether.net<mailto:cisco-voip-bounces at puck.nether.net>> On Behalf Of Riley, Sean
Sent: Thursday, July 8, 2021 10:34 AM
To: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: [cisco-voip] Ported to SIP carrier - some calls still coming in old carrier

We ported about 700 DID's yesterday, from our PRI carrier to a new SIP carrier. Everything is working great, except I still see some calls coming into the old H323 gateways connected to the old carrier.  If I make a test call from my cell phone to the called number seen on the old gateway, the call routes through our new SIP gateway as expected.  Observing over the past 2 days it does seem that some of the calls are from the same "calling ID" and number.

Could it just take time for the port to propagate to other carriers and this will eventually work itself out over the coming days?  Or could there be something else causing calls from specific callers to still route through our old PRI carrier?

Thanks for any advice or knowledge you can share on this.

Sean.
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