From: "Mike Hammett" <voiceops@ics-il.net>
To: "Mike Hammett" <voiceops@ics-il.net>
Cc: "voiceops" <voiceops@voiceops.org>
Sent: Friday, November 14, 2025 7:50 AM
Subject: Re: [VoiceOps] Migration from TDM and Tandems to PSTN-Connect

Everything so far seems to be working, which it should, and that makes me glad.



-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com



Midwest Internet Exchange
http://www.midwest-ix.com



----- Original Message -----
From: "Mike Hammett via VoiceOps"
To: "voiceops"
Sent: Thursday, November 13, 2025 12:13:27 PM
Subject: [VoiceOps] Migration from TDM and Tandems to PSTN-Connect

Tomorrow is the LERG effective date for our migration from TDM to using Sinch's PSTN-Connect. We have verified calls flow via testing with our consultant (Award) and Sinch. Given that this is pretty monumental and there doesn't appear to be as easy a "backing out" as there is with the Internet, what are the things I should triple-check? What are the things I should be watching? What are the tests I should be doing to ensure everything is 100%?

Also with a LERG effective date, is that at midnight local time, or some other time when calls start flowing differently? When do I switch my Metaswitch to passing calls via Sinch instead of the tandem?


I have asked Sinch and my consultants similar questions, just as a kind of sanity check.



-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com



Midwest Internet Exchange
http://www.midwest-ix.com




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