The part of the company to call depends on what part of the company
those trunks come from. Contact your AT&T account manager.
If they're IXC circuits, https://primeaccess.att.com/shell.cfm?section=4343
On 12/21/20 10:56 AM, Dave Frigen wrote:
We’ve narrowed this down to calls completing on our facilities (from
likely least cost routing) down an AT&T TDM/SS7 terminating trunk
group. We have no contacts for this trunk group, and even turned the
trunk group down for a day thinking we would get a call, but didn’t.
We’re still getting two calls to a single number, one call with caller
on it and the other with dead air. The dual calls are coming from
various service providers on this trunk group.
Anyone have any suggestions?
Dave
*From:* Dave Frigen <dfri...@wabash.net>
*Sent:* Friday, December 11, 2020 11:55 AM
*To:* 'voiceops@voiceops.org' <voiceops@voiceops.org>
*Cc:* 'Rodney Young' <rod...@wabash.net>; 'Don Ross'
<der...@wabash.net>; 'Barry Adair' <barryad...@wabash.net>
*Subject:* SS7 problems
I know SS7 is not a big part of the voice world for many of you, but
for those of you still exposed to it, just curious if anyone
experienced any problems with SS7 signaling in the past couple of days
where Terminating signaling times out and a 2^nd retry and new call
set up for the call delivery occurs. The result was the phone ringing
the customer, no one there. Second attempt successfully (if multiline
hunt group) comes in on next line/trunk.
Trouble tickets reported: Customers complaining about phones ringing,
no one on the other end.
We traced the issue upstream in the SS7 signaling. The signaling was
timing out after 15 seconds, creating call retry. We had our SS7
provider look into it. No trouble found, but the “gremlins”
mysteriously disappeared after the testing……concerned trouble may reoccur.
Any reference to anyone else experiencing these issues recently would
be appreciated.
Dave
*Dave Frigen*
*/Chief Operating Officer /*
Wabash Communications CO-OP | www.wabash.net <http://www.wabash.net>
Office: 618.665.3311
<https://www.facebook.com/wabashcommunicationscoop/><https://www.instagram.com/wabashcommunications/><https://www.youtube.com/channel/UCWoo3wyybeYEnTpTxK2jbUg>
<https://www.linkedin.com/company/18788687/admin/>
WabashCom_CO-OP_RGB.png <http://www.wabash.net/>
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