Protocol trace
A detailed report for the previous sent or received fax.
Auto Print after a fax transmission is available by changing the settings of Manual Print or FAX Parameter.
If a communication does not start until send/receive operation (when it did not enter Phase B after Phase A), the log is displayed as a blank space.
Print Procedure
Manual | [FAX] > [Menu] > [Fax Report Output] > [Protocol trace]= select [Print]. |
|---|---|
Automatic | Use Fax parameter Setting mode #006 to automatically print the log for every communication. See “Communication Protocol trace” in “Service parameters”. |
Output Sample
This sample is an example of a different model and may differ from the actual one.
| (1) | Title etc. | Same as Fax log. |
|---|---|---|
| (2) | Name, Fax | Sender’s name registered to the product. |
| (3) | Reception number to Communication result | Logs of the received faxes. |
| (4) | DIS(DTC) / DCS | Refer to “How to read DIS (DTC) / DCS”. (DIS (DTC) / DCS perspective) |
| (5) | Command / Response log | See How to read the command / response log. |
How to read the Command / Response log
The following explains the T.30 Protocol command / response in Fax log.
Communication procedure can be checked in details.
Example) Type = Reception
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.29). | ||
| 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). | ||
| Time (10ms) | The time when the signal was sent / received. If you pull back and forth, you will know the time of that signal. |
|---|---|
| Direction | Sending or Receiving direction for signals. This differs from that of the sending or receiving in fax communication. |
Command / Response name | Defined in the first 2 digits (8bit) or 4 digits (16bit) of data in the FCF (Facsimile Control Field). |
Data | Data is composed of FCF (Facsimile Control Field) and FIF (Facsimile Information Field). The first 2 digits (8 bits) or 4 digits (16 bits) represent the FCF, and the rest represent the FIF. Example1) Example2) |