The most regular error happens maybe 5 times a week. I've noticed it
happening to 5 different destinations, all of which identify as "NSF
remote fax equipment: Panasonic". I've attached the error log from one
such fax job, the error is:
Unable to transmit page (NAK at all possible signalling rates); too many
attempts to send
The second type is occurs slightly less frequently, but I've seen it
fail for about 10-15 different destination numbers. Again I've attached
a log from one failed fax, and the error is:
Failure to train remote modem at 2400 bps or minimum speed; too many
attempts to send