In this particular case, it was a migration from TDM to a common IP-based
solution for tandem access. The LERG effective date has passed and the TDM
trunks flowed zero calls.
----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com
Midwest Internet Exchange http://www.midwest-ix.com
From: "Mary Lou Carey via VoiceOps" <[email protected]>
To: "voiceops" <[email protected]>
Cc: "Kidd Filby" <[email protected]>, "Mike Hammett" <[email protected]>,
"Jeff Shultz" <[email protected]>
Sent: Tuesday, January 6, 2026 4:44 PM
Subject: [VoiceOps] Re: FYI: TDM Disconnections
I'm not sure what the question was that started this thread about disconnecting
TDM trunks, but I specialize in writing ASRs for SS7 trunk groups (local,
wireless, and FGD). Turning down the SS7 network doesn't start with
disconnecting the trunk groups. The NPA-NXX codes all have to be returned or
re-routed to a different switch in BIRRDS before the RBOC/ILEC will even assign
a project ID. If the traffic is being routed to a different trunk group that
was set up by a third party, the translations page on the ASR also needs to be
completed so they change the NXX translations before they remove the trunks.
There's not many of us dinosaurs left out there who know how the SS7 network is
set up, muchless how to track down the information from the bills / system and
write the orders for the trunks, transport, SS7 routes, and links. If you need
help, you can reach out to me privately.
MARY LOU CAREY
BackUP Telecom Consulting
Office: 615-791-9969
Cell: 615-796-1111
On 2026-01-06 02:40 PM, Jeff Shultz via VoiceOps wrote:
You'll definitely want to be working with whoever manages SS7 for you, as there
will likely be SS7 route sets involved that you will need to remove from your
switch, particularly if the reason you are disconnecting the circuit is because
the switch you were talking to is going away.
On Tue, Jan 6, 2026 at 11:39 AM Kidd Filby via VoiceOps <[email protected]>
wrote:
Having done this numerous times across the country, this work order (Disco of
Trunks &/or Facilities) is usually considered a PROJECT by the ILEC's, so be
expecting an additional charge for it. Be diligent on their billing and
estimates for the work. Make sure it makes sense. It is also a very good idea
to validate each T1 to ensure you are both working on the same ones at the same
time, before the cut-over or disco. I know SS7 usually does a great job
keeping things straight but... I have found record discrepancies.... on both
sides. Best to be safe than sorry.
Good luck to all and congrats on being able to do it.
On Tue, Jan 6, 2026 at 11:55 AM Mike Hammett via VoiceOps
<[email protected]> wrote:
FYI: If you're disconnecting TDM circuits from the tandem or other ILEC voice
switches, you first need to put in disconnect orders for the trunk groups
before you can disconnect the underlying DS1s or DS3s. Also, those trunk group
identifications aren't on your bill, so you've got to work with the ILEC to get
the information you need to be able to cancel circuits.
-----
Mike Hammett
Intelligent Computing Solutions
Midwest Internet Exchange
DNA Communications
_______________________________________________
VoiceOps mailing list -- [email protected]
https://lists.voiceops.org/postorius/lists/voiceops.voiceops.org/
To unsubscribe send an email to [email protected]
--
Kidd Filby
661.557.5640 (C)
http://www.linkedin.com/in/kiddfilby
_______________________________________________
VoiceOps mailing list -- [email protected]
https://lists.voiceops.org/postorius/lists/voiceops.voiceops.org/
To unsubscribe send an email to [email protected]
--
Jeff Shultz
Central Office Technician
SCTC
(503) 769-2125
Go Big - Ask for 5 Gig
Like us on Social Media for News, Promotions, and other information!!
*** This message contains confidential information and is intended only for the
individual named. If you are not the named addressee you should not
disseminate, distribute or copy this e-mail. Please notify the sender
immediately by e-mail if you have received this e-mail by mistake and delete
this e-mail from your system. E-mail transmission cannot be guaranteed to be
secure or error-free as information could be intercepted, corrupted, lost,
destroyed, arrive late or incomplete, or contain viruses. The sender therefore
does not accept liability for any errors or omissions in the contents of this
message, which arise as a result of e-mail transmission. ***
_______________________________________________
VoiceOps mailing list -- [email protected]
https://lists.voiceops.org/postorius/lists/voiceops.voiceops.org/
To unsubscribe send an email to [email protected]
_______________________________________________
VoiceOps mailing list -- [email protected]
https://lists.voiceops.org/postorius/lists/voiceops.voiceops.org/
To unsubscribe send an email to [email protected]
