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Re: [hylafax-users] Performance Tuning and sendfax -S
Konrad Baechler wrote:
Mar 25 17:20:48.07: [16944]: <-- [24:AT+FDCC=1,5,2,2,0,2,0,0\r]
Mar 25 17:20:48.07: [16944]: --> [2:OK]
Mar 25 17:20:48.07: [16944]: DIAL ...
Mar 25 17:20:48.07: [16944]: <-- [15:ATDT...\r]
Mar 25 17:21:27.68: [16944]: --> [5:+FCON]
Mar 25 17:21:27.68: [16944]: --> [28:+FCSI:" +41 ..."]
Mar 25 17:21:27.68: [16944]: REMOTE CSI "+41 ..."
Mar 25 17:21:27.68: [16944]: --> [22:+FDIS: 1,5,0,2,0,2,0,0]
Mar 25 17:21:27.68: [16944]: --> [2:OK]
Mar 25 17:21:27.68: [16944]: REMOTE best rate 14400 bit/s
Mar 25 17:21:27.68: [16944]: REMOTE max A4 page width (215 mm)
Mar 25 17:21:27.68: [16944]: REMOTE max unlimited page length
Mar 25 17:21:27.68: [16944]: REMOTE best vres 7.7 line/mm
Mar 25 17:21:27.68: [16944]: REMOTE format support: MH
Mar 25 17:21:27.68: [16944]: REMOTE supports T.30 Annex C, half duplex
ECM
Mar 25 17:21:27.68: [16944]: REMOTE best 0 ms/scanline
Mar 25 17:21:27.68: [16944]: USE 14400 bit/s
Mar 25 17:21:27.68: [16944]: USE error correction mode
Mar 25 17:21:27.68: [16944]: SEND file "docq/doc106.tif;01"
Mar 25 17:21:27.68: [16944]: USE A4 page width (215 mm)
Mar 25 17:21:27.68: [16944]: USE unlimited page length
Mar 25 17:21:27.68: [16944]: USE 7.7 line/mm
Mar 25 17:21:27.68: [16944]: USE 1-D MH
Mar 25 17:21:27.68: [16944]: USE 0 ms/scanline
Mar 25 17:21:27.68: [16944]: <-- [24:AT+FDIS=1,5,0,2,0,0,0,0\r]
Mar 25 17:21:27.68: [16944]: --> [2:OK]
Mar 25 17:21:27.68: [16944]: <-- [7:AT+FDT\r]
Mar 25 17:21:39.70: [16944]: --> [22:+FDCS: 1,3,0,2,0,2,0,0]
Mar 25 17:21:39.91: [16944]: --> [7:CONNECT]
Okay, in comparing that log above with this log below...
Mar 25 17:55:29.29: [20939]: <-- [24:AT+FDCC=1,5,2,2,0,2,0,0\r]
Mar 25 17:55:29.29: [20939]: --> [2:OK]
Mar 25 17:55:29.29: [20939]: DIAL ...
Mar 25 17:55:29.29: [20939]: <-- [15:ATDT...\r]
Mar 25 17:55:47.48: [20939]: --> [5:+FCON]
Mar 25 17:55:47.48: [20939]: --> [28:+FCSI:" +41 ..."]
Mar 25 17:55:47.48: [20939]: REMOTE CSI "+41 ..."
Mar 25 17:55:47.48: [20939]: --> [22:+FDIS: 1,5,0,2,0,2,0,0]
Mar 25 17:55:47.48: [20939]: --> [2:OK]
Mar 25 17:55:47.48: [20939]: REMOTE best rate 14400 bit/s
Mar 25 17:55:47.48: [20939]: REMOTE max A4 page width (215 mm)
Mar 25 17:55:47.48: [20939]: REMOTE max unlimited page length
Mar 25 17:55:47.48: [20939]: REMOTE best vres 7.7 line/mm
Mar 25 17:55:47.48: [20939]: REMOTE format support: MH
Mar 25 17:55:47.48: [20939]: REMOTE supports T.30 Annex C, half duplex
ECM
Mar 25 17:55:47.48: [20939]: REMOTE best 0 ms/scanline
Mar 25 17:55:47.48: [20939]: USE 14400 bit/s
Mar 25 17:55:47.48: [20939]: USE error correction mode
Mar 25 17:55:47.48: [20939]: SEND file "docq/doc111.tif;01"
Mar 25 17:55:47.48: [20939]: USE A4 page width (215 mm)
Mar 25 17:55:47.48: [20939]: USE unlimited page length
Mar 25 17:55:47.48: [20939]: USE 7.7 line/mm
Mar 25 17:55:47.48: [20939]: USE 1-D MH
Mar 25 17:55:47.48: [20939]: USE 0 ms/scanline
Mar 25 17:55:47.48: [20939]: <-- [24:AT+FDIS=1,5,0,2,0,0,0,0\r]
Mar 25 17:55:47.48: [20939]: --> [2:OK]
Mar 25 17:55:47.48: [20939]: <-- [7:AT+FDT\r]
Mar 25 17:55:47.98: [20939]: --> [22:+FDCS: 1,5,0,2,0,2,0,0]
Mar 25 17:55:48.20: [20939]: --> [7:CONNECT]
You'll see that the *only* variation is that the first log has this:
Mar 25 17:21:27.68: [16944]: <-- [7:AT+FDT\r]
Mar 25 17:21:39.70: [16944]: --> [22:+FDCS: 1,3,0,2,0,2,0,0]
Mar 25 17:21:39.91: [16944]: --> [7:CONNECT]
While the last log has this:
Mar 25 17:55:47.48: [20939]: <-- [7:AT+FDT\r]
Mar 25 17:55:47.98: [20939]: --> [22:+FDCS: 1,5,0,2,0,2,0,0]
Mar 25 17:55:48.20: [20939]: --> [7:CONNECT]
It's obvious that the first is using V.29 and the latter is V.34 because
of the amount of time that elapses between AT+FDT and the response.
However, from what I can see HylaFAX (and your 'sendfax -3') did nothing
to provoke this.
If the receiver in both cases here is the same, and if it supported V.34
in each call, then there must be some variation in the underlying Diva
behavior that is enabling V.34 in the latter but not in the former.
Unfortunately, it's really impossible for anyone to make clear sense of
these things from the tty when working with the Diva Servers... you've
got to go to the Diva's stuff to do that.
Lee.
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