RFX144V24-S23 and RFX96V24-S23 Modem Designer’s Guide
9-2
1070
DOCUMENT
PHOTOELECTRIC
CONVERSION
T
E
L
E
P
H
O
N
E
L
I
N
E
1070F9-01 Basic
DATA
COMPRESSION
MODULATOR
DEMODULATOR
DATA
DECODING
TX SCANNING
CONTROL
PRINTER
CONVERSION
RX SCANNING
CONTROL
RECEIVED
IMAGE
Figure 9-1. Basic Block Diagram of G3 Facsimile
CALLING UNIT
CALLED UNIT
DIGITAL ID SIGNAL: 300 BPS FSK, HDLC FORMAT
DIGITAL COMMAND SIGNAL: 300 BPS FSK, HDLC FORMAT
TRAINING CHECK: HIGH SPEED TRAIN FOLLOWED BY 1.5S OF ZEROS
CONFIRMATION TO RECEIVE: 300 BPS FSK, HDLC FORMAT
CALLING TONE: 1100 Hz, 0.5S ON/3S OFF
CALLING TONE:
INDICATE NON-SPEECH TERMINAL
CALLED STATION ID: 2100 Hz, 2.6S <ON <4S
TRANSMITS DOCUMENT
END OF MESSAGE: 300 BPS FSK, HDLC FORMAT
END OF MESSAGE:
EOP, MPS OR PRI-Q MAY BE SENT
MESSAGE CONFIRMATION: 300 BPS, HDLC FORMAT
MESSAGE CONFIRMATION:
POST-MESSAGE RESPONSE OF
MESSAGE CONFIRMATION:
RTP, RTN, PIP OR PIN MAY
MESSAGE CONFIRMATION:
BE SENT
PHASE A
PHASE B
PHASE C
PHASE D
CNG
CED
DIS
CFR
DCS
TCF
MESS
EOM
MCF
1070F9-02 G3
Figure 9-2. G3 Facsimile Procedure
Содержание RFX144V24-S23
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