d-Color MF4003/MF3303
P THEORY OF OPERATION > 8. FK-517
P-97
Head octet
Expansion octet
(1)
(2)
(3)
0
4 bits
3 bits
0
1
0
3 bits
2 bits
0
1
0
1
Start bit
b0
Stop bit
b1
b2
b3
b4
b5
b6
b7
Start bit
b0
Stop bit
b1
b2
b3
b4
b5
b6
b7
• (1): Category tag (tags which represent information types)
Bit assignment
Meaning (information type)
Included signal
b0
b1
b2
b3
1
0
0
0
...
Call Func
Top of CM, JM / CI
1
0
1
0
...
Modulation Mode
CM/JM
0
1
0
1
...
Protocols
CM/JM
1
0
1
1
...
GSTN access
CM/JM
0
1
1
0
...
PCM modem ability
CM/JM
• (2): Option bit (Differs depending on category tags. See “
P.8.1.3 (4) Common signal bit definition
• (3): Additional option bit (Differs depending on category tags. See “
P.8.1.3 (4) Common signal bit definition
”.)
(4) Common signal bit definition
(a) Call function (1 octet)
Top octet
b0
b1
b2
b3
b4
b5
b6
b7
Meaning
1
0
0
0
0
(Call Function category tag)
0
0
0
Defined by ITU-T
1
0
0
PSTN multi-media terminal
0
1
0
V18 text phone
1
1
0
Video tex
0
0
1
FAX transmission from the calling terminal
1
0
1
FAX reception in the calling terminal
0
1
1
Data transmission / reception
1
1
1
Expansion octet = with call function represented by next octet
• (Other than the above = Reserved)
(b) Modulation mode (3 octets)
1st octet
b0
b1
b2
b3
b4
b5
b6
b7
Meaning
Item No.
1
0
1
0
0
(Modulation mode category tag, b4 = 0 is first octet)
0/1
PCM modem ability disabled/enabled
0/1
V34 full-duplex ability disabled/enabled
1
0/1
V34 half-duplex ability disabled/enabled
2
2nd octet
b0
b1
b2
b3
b4
b5
b6
b7
Meaning
Item No.
0
1
0
(b3, 4 and 5=0, 1, 0 means expanded oct.)
0/1
V32 bis / V32 ability disabled / enabled
3
0/1
V22 bis / V22 ability disabled / enabled
4
0/1
V17 ability disabled / enabled
5
0/1
V29 half-duplex ability disabled / enabled (used in T.30)
6
0/1
V27 ter ability disabled / enabled
7
3rd octet
b0
b1
b2
b3
b4
b5
b6
b7
Meaning
Item No.
0
1
0
(b3, 4 and 5=0, 1, 0 means expanded oct.)
0/1
V26 ter ability disabled / enabled
8
0/1
V26 bis ability disabled / enabled
9
0/1
V23 full-duplex ability disabled / enabled
10
Y119930-3
Service Manual
Summary of Contents for d-Color MF 4003
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