Canon MF4690 Service Manual - Page 152
Menu Switch Settings MENU
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Chapter 14 Bit Function 5 V.34 transmission fallback 6 not used 7 not used 1 Prohibited - 0 Not prohibited - 14.3.11.2 Detailed Discussions of Bit 0 0016-2029 Select whether to use the V.8 protocol when calling. If NO is selected, the V.8 protocol is inhibited at calling and the V.21 protocol is used. 14.3.11.3 Detailed Discussions of Bit 1 0016-2030 Select whether to use the V.8 protocol when called. If NO is selected, the V8 protocol is inhibited when called and the V.21 protocol is used. 14.3.11.4 Detailed Discussions of Bit 2 0016-2031 If ANSam signal is not received during transmission, select whether to use the V.8 protocol when the other fax machine declares the V.8 protocol in DIS signal. If NO is selected, the CI signal is not transmitted and the V.8 protocol is not used even if the DIS that specifies the V.8 protocol is received. The V.8 late start is not executed during manual transmission regardless of this setting. 14.3.11.5 Detailed Discussions of Bit 3 0016-2032 Select whether to declare the V.8 protocol in DIS signal for reception. If NO is selected, the V.8 protocol cannot be used because it is not declared in DIS signal. The V.8 late start is not executed during manual reception regardless of this setting. 14.3.11.6 Detailed Discussions of Bit 4 0016-2033 Select whether the receiver falls back during V.34 reception. If 'Prohibit' is selected, the receiver does not fall back. 14.3.11.7 Detailed Discussions of Bit 5 0016-2034 Select whether the transmitter falls beck during V.34 transmission. If 'Prohibit' is selected, teh transmitter does not fall back. 14.3.12 SSSW-SW30 14.3.12.1 List of Functions T-14-14 0016-2035 Bit Function 1 0 0 Not used - - 1 Not used - - 2 Not used - - 3 Not used - - 4 Not used - - 5 New dial tone detection method 6 Not used Detect with the new Detect with the method. existing method. - - 7 Not used - - 14.3.12.2 Detailed Discussions of Bit 5 0016-2036 When "Detect with the new method" is selected, tone is detected for 3.5 seconds before call origination in order to discriminate between dial tone and voice. If dial tone is detected and the time since line seizure is 3.5 seconds or longer, call origination takes place immediately. If the time since line seizure is less than 3.5 seconds, call origination takes place after waiting for 1 second. (If the time since line seizure reaches 3.5 seconds during the 1-second waiting period, call origination takes place immediately. By default, "Detect with a new method" is assigned for this SW. 14.4 Menu Switch Settings (MENU) 14.4.1 Menu Switch Composition T-14-15 0016-2042 No. Function Range of settings 005 NL equalizer 1: ON, 0: OFF 006 telephone line monitor 0:DIAL, 1:SERVICEMAN1, 2:SERVICEMAN2, 3:OFF 007 transmission level (ATT) from 0 to 15 (ex: 15= -15 dBm) 008 V.34 modulation speed upper 0:3429, 1:3200, 2:3000, 3:2800, 4:2743, 5:2400 limit 009 V34 data speed upper limit 0:33.6 kbps, 1:31.2 kbps, 2:28.8 kbps, 3:26.4 kbps, 4:24.0 kbps, 5:21.6 kbps, 6:19.2 kbps, 7:16.8 kbps, 8:14.4 kbps, 9:12.0 kbps, 10:9.6 kbps, 11:7.2 kbps, 12:4.8 kbps, 13:2.4 kbps 010 Frequency of pseudoring signal 0:50 Hz, 1:25 Hz, 2:17 Hz, 3:20 Hz 14-12