Service manual

COPYRIGHT © 1999 CANON INC. CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
13-96
CHAPTER 13 TROUBLESHOOTING
#1 SSSW-SW28: V.8/V.34 protocol settings
Table 13-518
[Bit 0]
Selects whether or not to use V.8 protocol.
“No”: Even when V.8 protocol is received from receiving side, V.8 protocol is disabled,
protocol starts from V.21.
[Bit 1]
Selects whether or not to use V.8 protocol in reception.
“No”: V.8 protocol is disabled. Starts from V.21 protocol.
[Bit 2]
Selects whether or not to use V.8 protocol when an ANSam signal cannot be recognized
from the reception side and V.8 protocol is declared by the reception side in the DIS sig-
nal.
“Yes”: sends a CI signal in response to the called side’s DIS signal, then uses V.8 proto-
col.
“No”: does not send a CI signal in response to the called side’s DIS signal. Uses V.21
protocol.
When sending a manual transmission, V.8 late start is disabled regardless of this set-
ting.
[Bit 3]
Selects whether or not to declare V.8 in the DIS signal when the ANSam signal can not
be detected by the transmitting machine.
“Yes”: declares V.8 protocol in the DIS signal. Uses V.8 protocol after a CI signal is sent
by the transmitting machine.
“No”: does not declare V.8 protocol in the DIS signal. Uses V.21 protocol.
When sending a manual transmission, V.8 late start is disabled regardless of this set-
ting.
[Bit 4]
Selects whether or not to prohibit fall back from a V.34 reception machine.
Prohibit: Do not fall back from the receiving side.
SW
No.
Bit
No.
Function
28
0 Calling side’s V.8 protocol
Bit setting
10
No Yes
1 Called side’s V.8 protocol No Yes
2 Calling side’s V.8 late start No Yes
3 Called side’s V.8 late start No Yes
4 Fall back from V.34 receiving side Prohibit Do not prohibit
5 Reserved
6 Reserved
7 Reserved
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