the fax line was busy
what happens next.

Most fax machines have one line and answer one call at a time. A busy tone usually means someone else got there first, and that fixes itself.

What the status means

The call reached the number and the line was in use. Nothing was transmitted, so no pages of your plan were used. faxB2B records the reason as a busy line and schedules another call rather than asking you to do anything.

How the redialling works

By default a fax gets up to three calls in total, with pauses of two and five minutes before the retries. Each attempt appears on the fax record, so you can see how many have happened. An owner can set one to five calls in Settings and change each pause, from one minute up to an hour.

If every attempt is busy

  1. Wait until all the scheduled calls have finished — the fax is still working.
  2. Send again later in the day. Shared machines have quiet periods, often early morning.
  3. Split a long document. A twenty-page fax occupies the line long enough to collide with other senders.
  4. Ask the recipient whether they have a second fax number, or whether the machine is out of paper and refusing calls.

When a busy tone is not really busy

A machine that is jammed, out of paper or switched off can present as busy or as unreachable, depending on the equipment in between. If a number is busy at every hour across two days, it is worth a phone call to the recipient rather than more faxes. Line faults sometimes look the same.

Reduce the collisions

  • Do not resend manually while retries are pending. Two copies of your fax competing for one line makes the problem worse.
  • Space out a batch. Ten recipients are fine, but ten faxes to the same office are not.
  • Lengthen the pauses in Settings if the destination is a busy single-line office.

Questions

Do failed attempts cost pages?
No. A call that transmitted nothing uses no pages of your plan.
How long until the next attempt?
By default, the second call waits two minutes and the third waits five minutes after a retryable failure. Your organization can change these settings.
Should I raise the number of calls?
Up to five helps with genuinely busy offices. Beyond that, a phone call to the recipient is faster.

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