There is no way to force fax modems to go ahead and send documents. This is
because data handshaking, and optionally error correction, need to be
established. The LaserWriter Select 360 fax modem operates as a standard
Group 3 fax machine so it's communications are no different, just the type
of data being sent.
Historically voice/fax/data switches have not been too robust in making the
appropriate connections. So, we would suggest contacting the manufacturer
of the switch for additional help in troubleshooting the switch. We have
heard that some switches can be configurable so it might help to adjust
those settings.
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