How to read the Command / Response log
The following explains the T.30 Protocol commands/responses in fax log.
Communication procedure can be checked in details.
Commands/responses log_ Sample Example (Type = Sending)
Time (10ms) |
Direction |
Command / Response name |
Data | Description |
|---|---|---|---|---|
| 01136 |
|
CSI | 402020202020202020343332312035353520323430 |
Received a caller subscriber ID (numeric ID). The value of sender’s number registered in the receiver is transmitted. The number is entered with ASCII character codes. (Same as TSI) FIF=020202020202020343332312035353520323430 (ASCII character code 20 = space (S), 30-39 = 0-9, 2b = +)
|
| 01136 |
|
DIS | 8020C28AC480D5838018 |
Receives a digital identification signal (reception capability). |
| 01257 |
|
TSI | 432020202020202020202031333231313233353330 |
Sent a transmitting subscriber ID (numeric ID). The value of sender’s number registered in the sender is transmitted. The number is entered with ASCII character codes. (Same as CSI) FCF=43 FIF=2020202020202020202031333231313233353330 (ASCII character code 20 = space (S), 30-39 = 0-9, 2b = +)
|
| 01265 |
|
DCS | 830042F844 | Received a digital identification signal (Sending mode). |
|
|
TCF | Sent a training signal (V17/V29/V27ter only). |
||
| 01268 |
|
CFR | 84 | Received a confirmation for receive signal. |
| 01331 |
|
PIX | FF [33,600 bps (V.34) / MMR / A4 / 8x7.7 / 0(E:0)] |
Received the 1st page of image signal. The communication status is described within [ ].
|
| 03130 |
|
PPS - EOP | BF2F0000FD | Received a end of procedure signal (the 1st page finished without next page). FCF = BF2F, FIF = 0000FD (00 = 1st page, 00 = 1st block, FD = 254 frames) If the number of frames exceeds 256, separate the pages by PPS-NULL and send them separately. The frame size of PPS-NULL is always FF. PPS-MPS is an ECM mode signal. Use MPS in non-ECM mode. |
| 03131 |
|
PPR | BC00000000F8FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF |
Since there was an error in received PIX, specifies the error frame and requests retransmission. (A signal of ECM mode) Error frame specifying method: “FFFF” (x1) represents 1 to 16 frames. FFFF x 16 represents 1 to 256 frames. Since 254 frames were transmitted, 1 is set for 255 to 256 frames. Set to 1 for a reception error frame. Since the frame specification is 0000 0000 F8FFF FFFF ..., 35 frames from 1 to 35 succeeded and 219 frames from 36 to 254 have been requested to be retransmitted. |
| 03239 |
|
PIX | FF [33,600 bps (V.34) / MMR / A4 / 8x7.7 / 0(E:0)] |
Received a frame retransmission request for the 1st page of image signal. Communication status is described within [ ].
|
| 04770 |
|
PPS - EOP | BF2F0000DA | Received a end of procedure signal (the 1st page finished without next page). |
| 04771 |
|
PPR | BC0000000000000000000000F0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF |
Since there was an error in received PIX, specifies the error frame and requests retransmission. (A signal of ECM mode) How to specify error frames: Regard FFFF as one unit to represent 1 to 16 frames. FFFF x 16 represents 1 to 256 frames. Entry 1 to the reception error frame. Since the frame specification is 0000 0000 0000 0000 0000 00F0 FFFF ~, 57 frames 36 to 92 have succeeded and 162 frames with frame numbers 93 to 254 have been requested to be retransmitted. |
| 03239 |
|
PIX | FF [33,600 bps(V.34) / MMR / A4 / 8x7.7 / 960(E:1) ] |
Received the 1st page of image signal.The communication status is described within [ ].
|
| 06612 |
|
DCN | FB | The communication became impossible due to the error. It ended in failure by receiving a disconnect command from the sender. |
| PROTOCL | V.34 | Displays the protocol set at the start of communication (V.34 / V.17 / V.20). |
||
| SPEED | 33.600Bps (3429) | Displays the communication speed at the time of the last communication () indicates the symbol rate. |
||
| CODING | MMR | Displays the encoding method set at the start of communication (MMR / MR / MH). |
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