Ricoh FACSIMILE FAX77 Field Service Manual page 72

Bit Switch 4
BIT FUNCTION
Hang-up on receiv- 0: No 1: Yes
0
ing a negative
receipt signal (PIN
or RTN)
1 Echo counter-
measure
2 CNG signal trans-
mission in manual
tx mode
3 DIS detection times 0: 1 1: 2
Number of page retransmissions
4
Bit 5 Bit 4
0 0
5 0 1
1 0
1 1
Continued on the next page
DATA
0: Enabled
1: Disabled
0: Enabled
1: Disabled
No. of Times
0
1
2
3
If this bit is 0, the next page will be sent even if a negative
receipt signal is received. If this bit is 1, the machine will send
DCN and hang up if it receives a negative receipt signal.
This bit is ignored for memory transmission; page retransmis-
sion will be done according to the settings of bits 4 and 5. It is
also ignored if ECM is being used.
If the setting is 1, the machine will hang up if it receives the
same signal twice. If the setting is 0, the machine will ignore
echoes from the line.
CNG (calling tone) is normally used by auto-dial machines to
alert a manual machine operator that an auto-transmit
machine is on the line waiting to transmit. This tone is not
needed for manual operation (full number dialling).
The machine will send DCS (G3 set-up signal) if it receives
DIS. If echoes are frequent, setting this bit to 1 will allow the
machine to wait for the second DIS before sending DCS.
These bits are effective for all machines. If the distant end
returns a negative receipt signal, the machine will try to
resend the page from memory.
2-41
COMMENTS