Ricoh M0A0 Service Manual page 697

output
0: Off
1: On (Forbid
output)
7 Not used
G3 Switch 02 (SP No. 1-105-003)
No Function
0 G3 protocol mode
used
0: Standard and non-
standard
1: Standard only
1- Not used
6
7 Short preamble
0: Disabled 1: Enabled
G3 Switch 03 (SP No. 1-105-004)
No Function
0 DIS detection number
(Echo countermeasure)
0: 1
1: 2
1 Not Used
2 Not Used
3 ECM frame size
0: 256 bytes
1: 64 bytes
4 CTC transmission conditions
0: After one PPR signal received
1: After four PPR signals
received (ITU-T standard)
Do not change this setting.
Comments
Change this bit to 1 only when the other end can only communicate with machines
that send T.30-standard frames only.
1: Disables NSF/NSS signals (these are used in non-standard mode
communication)
Do not change the settings.
Refer to Appendix B in the Group 3 Facsimile Manual for details about Short
Preamble.
Comments
0: The machine will hang up if it receives the same DIS frame twice.
1: Before sending DCS, the machine will wait for the second DIS which is
caused by echo on the line.
Do not change the settings.
Do not change the settings.
Keep this bit at "0" in most cases.
0: When using ECM in non-standard (NSF/NSS) mode, the machine sends
a CTC to drop back the modem rate after receiving a PPR, if the following
condition is met in communications at 14.4, 12.0, 9.6, and 7.2 kbps.
NTransmit- Number of transmitted frames
NResend- Number of frames to be retransmitted
1: When using ECM, the machine sends a CTC to drop back the modem
rate after receiving four PPRs.
4.Service Tables
71