We’re seeing similar issues in Central Illinois with calls completing to our 
toll free numbers provided by CenturyLink/Lumen, from callers throughout the 
Midwest at least.

From: Outages <[email protected]> on behalf of Matt Riffle via 
Outages <[email protected]>
Date: Thursday, June 24, 2021 at 9:13 AM
To: Chris Kawchuk via Outages <[email protected]>
Subject: Re: [outages] Mobile calling issues - Michigan/Detroit
We are currently seeing problems from at least Verizon Wireless calling to a 
toll-free number provided to us by Voyant.

Callers get a bored-sounding guy giving the “no routes found” error.

-Matt


On Jun 24, 2021, at 9:51 AM, Ufer, Robert via Outages 
<[email protected]<mailto:[email protected]>> wrote:

I am seeing issues completing calls in the region – were are running our SIP 
trunks through Intrado and they see connection issues on the carrier side. It 
looks like SIP peering is broken in the Sprint / T-mobile carrier network for 
the region. Verizon and AT&T are working but Sprint and T-mobile DID calls are 
failing with a “no routes found” error.



Thanks,

Robert Ufer
Network Architect
Information Technology
Network Operations
[email protected]<mailto:[email protected]>
Pronouns:  He / Him
Tel: 248-853-3687
Mobile: 616-745-2534
HenryFord.com<http://wwww.henryford.com/>

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From: Outages <[email protected]<mailto:[email protected]>> 
On Behalf Of Anthony Concepcion via Outages
Sent: Thursday, June 24, 2021 09:43
To: [email protected]<mailto:[email protected]>
Subject: [outages] Mobile calling issues - Michigan/Detroit


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Anyone seeing issues with mobile calls not completing in the Detroit/Rochester 
Hills area?

We're receiving reports of calls not completing to our network from 
tmobile/sprint..

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