Brother International IntelliFax-3550 Service Manual - Page 104
divide a message into 64-octet frames.
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WSW09 (Protocol definition 1) Selector No. 1 2 Function Frame length selection Not used. 3 No. of retries 4 5 T5 timer 6 T1 timer Elapsed time for time-out 7 control for no response from the called station in automatic 8 sending mode Setting and Specifications 0: 256 octets 1: 64 octets No. 3 4 00 : 01 : 10 : 11 : 4 times 3 times 2 times 1 time 0: 300 sec. 1: 60 sec. 0: 35 sec. 1: 40 sec. No. 7 8 00 : 01 : 10 : 11 : 50 sec. 70 sec. 90 sec. 35 sec. q Selector 1: Frame length selection Usually a single frame consists of 256 octets (1 octet = 8 bits). For communications lines with higher bit error rate, however, set selector 1 to "1" so that the facsimile equipment can divide a message into 64-octet frames. Remarks: The error correction mode (ECM) is a facsimile transmission manner in which the equipment divides a message into frames for transmission so that if any data error occurs on the transmission line, the equipment retransmits only those frames containing the error data. q Selectors 3 and 4: No. of retries These selectors set the number of retries in each specified modem transmission speed. q Selector 6: T1 time This selector sets the time length for the T1 timer. q Selectors 7 and 8: Elapsed time for time-out control If the equipment receives no response (no G3 command) from the called terminal in automatic sending during the time set by these selectors, it disconnects the line. V - 22