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 < voiceops@voiceops.org> 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.
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Mike Hammett
Intelligent Computing Solutions
Midwest Internet Exchange
DNA Communications
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