Ricoh B051 Service Manual page 471

G3 Switch 03
No FUNCTION
0 DIS detection number
(Echo countermeasure)
0: 1
1: 2
1 V.8 protocol in manual
reception
0: Disabled
1: Enabled
2 V.8 protocol
0: Disabled
1: Enabled
3
ECM frame size
0: 256 bytes
1: 64 bytes
4 CTC transmission conditions
0: Ricoh mode (PPR x 1)
1: ITU-T mode (PPR x 4)
5 Modem rate used for the next
page after receiving a negative
code (RTN or PIN)
0: No change 1: Fallback
6 V.8 protocol in manual
transmission
0: Disabled
1: Enabled
7 Not used
G3 Switch 04
No FUNCTION
0 Training error detection
to threshold
3
4-7 Not used
SM
CÓPIA NÃO CONTROLADA
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.
0: The machine sends CED instead of ANSam
when starting a manual reception.
1: The machine sends ANSam during manual
reception.
0: V.8/V.34 communications will not be possible.
Note:
Do not set to 0 unless the line condition is always
bad enough to slow down the data rate to 14.4 kbps
or lower.
Keep this bit at "0" in most cases.
When using ECM, the machine will choose a slower
modem rate after receiving PPR once (Ricoh mode)
or four times (ITU-T mode).
This bit is ineffective in V.34 communications.
1: The machine's tx modem rate will fall back before
sending the next page if a negative code is
received. This bit is ignored if ECM is being used.
1: The machine detects either ANSam or CED
during manual transmission.
Do not change the setting.
0 - F (Hex); 0 - 15 bits
If the number of error bits in the received TCF is
below this threshold, the machine informs the
sender that training has succeeded.
Do not change the settings.
81
CÓPIA NÃO CONTROLADA
BIT SWITCHES
SP No. 1-105-004
COMMENTS
SP No. 1-105-005
COMMENTS
B502