Stay where you are if
- A fax machine is part of the job. A fax machine expects an analog line, and the tones do not come back intact once they have been turned into data. Clinical referrals and freight paperwork still move that way.
- Your internet cuts out. Browsing survives a short gap. A conversation does not. Fix that first.
- There is a year left on the current contract. Two bills at once plus a charge for leaving early is not a saving. Wait for the end date.
- Something else is on that copper. Alarm panels, elevator phones and older card terminals share the line more often than people expect, and cancelling it takes them out.
- The service address will go stale. That address is what emergency dispatch receives, so somebody has to keep it right.