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FAX-L1000 Chapter 5: Appendix
[Bit 6]
In the conditions for enforced G4/G3 fallback, it is possible to select whether or not to add
"Does the error code set in the fallback table coincide with the cause number received from
the network? If “Reference” is selected, the machine will fallback to G3 and call again
after an outgoing G4 call even if the “cause number” corresponding to the error code set
under the #4C ISDN menu in ISDN BASIC G4/G3 Fallback is received from the
network. This setting is available when the ISDN BASIC Bitswitch SW08 Bit4 under the
#4C ISDN BASIC menu is “0.”
NOTE
Enforced fallback function
This is an function for outgoing G4 calls, in which a call is forced with G3 if
there is an error in B-channel communications after normal D-channel
connection.