[hylafax-users] Odd problem.....

To: hylafax-users@xxxxxxxxxxx
Subject: [hylafax-users] Odd problem.....
From: Karl Denninger <karl@xxxxxxxxxxxxx>
Date: Tue, 25 Mar 2008 11:31:57 -0500

Talking to a number of different machines, Multitech Class 1.0 (5632 serial modem), traditional phone line, getting a number of these sorts of errors:

Mar 24 07:46:45.84: [62998]: <-- [9:AT+FRH=3\r]
Mar 24 07:46:45.85: [62998]: --> [7:CONNECT]
Mar 24 07:46:46.19: [62998]: --> [2:OK]
Mar 24 07:46:46.19: [62998]: REMOTE best rate 14400 bit/s
Mar 24 07:46:46.19: [62998]: REMOTE max A4 page width (215 mm)
Mar 24 07:46:46.19: [62998]: REMOTE max unlimited page length
Mar 24 07:46:46.19: [62998]: REMOTE best vres 7.7 line/mm
Mar 24 07:46:46.19: [62998]: REMOTE format support: MH, MR, MMR
Mar 24 07:46:46.19: [62998]: REMOTE supports T.30 Annex A, 256-byte ECM
Mar 24 07:46:46.19: [62998]: REMOTE best 0 ms/scanline
Mar 24 07:46:46.19: [62998]: USE 14400 bit/s
Mar 24 07:46:46.19: [62998]: USE error correction mode
Mar 24 07:46:46.19: [62998]: SEND file "docq/doc11902.ps;f0"
Mar 24 07:46:46.19: [62998]: USE A4 page width (215 mm)
Mar 24 07:46:46.19: [62998]: USE unlimited page length
Mar 24 07:46:46.19: [62998]: USE 3.85 line/mm
Mar 24 07:46:46.19: [62998]: USE 2-D MMR
Mar 24 07:46:46.19: [62998]: USE 0 ms/scanline
Mar 24 07:46:46.19: [62998]: SEND training at v.17 14400 bit/s
Mar 24 07:46:46.19: [62998]: <-- [9:AT+FRS=7\r]
Mar 24 07:46:46.35: [62998]: --> [2:OK]
Mar 24 07:46:46.35: [62998]: <-- [9:AT+FTH=3\r]
Mar 24 07:46:47.31: [62998]: --> [7:CONNECT]
Mar 24 07:46:47.31: [62998]: <-- data [23]
Mar 24 07:46:47.31: [62998]: <-- data [2]
Mar 24 07:46:47.32: [62998]: --> [7:CONNECT]
Mar 24 07:46:47.32: [62998]: <-- data [7]
Mar 24 07:46:47.32: [62998]: <-- data [2]
Mar 24 07:46:48.52: [62998]: --> [2:OK]
Mar 24 07:46:48.52: [62998]: <-- [9:AT+FTS=7\r]
Mar 24 07:46:48.59: [62998]: --> [2:OK]
Mar 24 07:46:48.59: [62998]: <-- [11:AT+FTM=145\r]
Mar 24 07:46:48.61: [62998]: --> [7:CONNECT]

..... all looks ok, we start sending....

Mar 24 07:47:09.54: [62998]: SEND send PPS (partial page signal)
Mar 24 07:47:09.54: [62998]: SEND send MPS (more pages, same document)
Mar 24 07:47:09.54: [62998]: <-- [9:AT+FRH=3\r]
Mar 24 07:47:09.63: [62998]: --> [7:CONNECT]
Mar 24 07:47:10.85: [62998]: --> [2:OK]
Mar 24 07:47:10.85: [62998]: SEND recv DCN (disconnect)
Mar 24 07:47:10.85: [62998]: <-- [9:AT+FRS=7\r]
Mar 24 07:47:11.06: [62998]: --> [2:OK]
Mar 24 07:47:11.06: [62998]: COMREC invalid response received to PPS.

Any ideas? Its happening to a significant number of remotes - perhaps 100 out of 500, and is pretty consistent.

I also am getting these:

Mar 25 10:23:02.43: [40101]: <-- [9:AT+FRH=3\r]
Mar 25 10:23:02.44: [40101]: --> [7:CONNECT]
Mar 25 10:23:02.78: [40101]: --> [2:OK]
Mar 25 10:23:02.78: [40101]: REMOTE best rate 33600 bit/s
Mar 25 10:23:02.78: [40101]: REMOTE max A4 page width (215 mm)
Mar 25 10:23:02.78: [40101]: REMOTE max unlimited page length
Mar 25 10:23:02.78: [40101]: REMOTE best vres R16 x 15.4 line/mm
Mar 25 10:23:02.78: [40101]: REMOTE format support: MH, MR, MMR
Mar 25 10:23:02.78: [40101]: REMOTE supports T.30 Annex A, 256-byte ECM
Mar 25 10:23:02.78: [40101]: REMOTE best 0 ms/scanline
Mar 25 10:23:02.78: [40101]: USE 14400 bit/s
Mar 25 10:23:02.78: [40101]: USE error correction mode
Mar 25 10:23:02.78: [40101]: SEND file "docq/doc13021.ps;f0"
Mar 25 10:23:02.78: [40101]: USE A4 page width (215 mm)
Mar 25 10:23:02.78: [40101]: USE unlimited page length
Mar 25 10:23:02.78: [40101]: USE 3.85 line/mm
Mar 25 10:23:02.78: [40101]: USE 2-D MMR
Mar 25 10:23:02.78: [40101]: USE 0 ms/scanline
Mar 25 10:23:02.78: [40101]: SEND training at v.17 14400 bit/s
Mar 25 10:23:02.78: [40101]: <-- [9:AT+FRS=7\r]
Mar 25 10:23:02.86: [40101]: --> [2:OK]
Mar 25 10:23:02.86: [40101]: <-- [9:AT+FTH=3\r]
Mar 25 10:23:03.83: [40101]: --> [7:CONNECT]
Mar 25 10:23:03.83: [40101]: <-- data [23]
Mar 25 10:23:03.83: [40101]: <-- data [2]
Mar 25 10:23:03.85: [40101]: --> [7:CONNECT]
Mar 25 10:23:03.85: [40101]: <-- data [7]
Mar 25 10:23:03.85: [40101]: <-- data [2]
Mar 25 10:23:05.06: [40101]: --> [2:OK]
Mar 25 10:23:05.06: [40101]: <-- [9:AT+FTS=7\r]
Mar 25 10:23:05.13: [40101]: --> [2:OK]
Mar 25 10:23:05.13: [40101]: <-- [11:AT+FTM=145\r]
Mar 25 10:23:05.15: [40101]: --> [7:CONNECT]

Looks good so far....

Mar 25 10:23:19.67: [40101]: <-- data [1038]
Mar 25 10:23:20.66: [40101]: <-- data [1033]
Mar 25 10:23:20.66: [40101]: <-- data [1035]
Mar 25 10:23:21.67: [40101]: <-- data [1035]
Mar 25 10:23:21.67: [40101]: <-- data [1037]
Mar 25 10:23:22.67: [40101]: <-- data [548]
Mar 25 10:23:22.67: [40101]: <-- data [2]
Mar 25 10:23:24.44: [40101]: --> [2:OK]
Mar 25 10:23:24.44: [40101]: <-- [9:AT+FTS=7\r]
Mar 25 10:23:24.50: [40101]: --> [2:OK]
Mar 25 10:23:24.50: [40101]: <-- [9:AT+FTH=3\r]
Mar 25 10:23:25.47: [40101]: --> [7:CONNECT]
Mar 25 10:23:25.47: [40101]: <-- data [7]
Mar 25 10:23:25.47: [40101]: <-- data [2]
Mar 25 10:23:25.97: [40101]: --> [2:OK]
Mar 25 10:23:25.97: [40101]: SEND send PPS (partial page signal)
Mar 25 10:23:25.97: [40101]: SEND send MPS (more pages, same document)
Mar 25 10:23:25.97: [40101]: <-- [9:AT+FRH=3\r]
Mar 25 10:23:29.20: [40101]: --> [0:]
Mar 25 10:23:29.20: [40101]: MODEM <Empty line>
Mar 25 10:23:29.20: [40101]: <-- data [1]
Mar 25 10:23:29.20: [40101]: --> [2:^P^C]
Mar 25 10:23:29.20: [40101]: --> [2:OK]
Mar 25 10:23:29.20: [40101]: <-- [9:AT+FTH=3\r]
Mar 25 10:23:30.17: [40101]: --> [7:CONNECT]
Mar 25 10:23:30.17: [40101]: <-- data [7]
Mar 25 10:23:30.17: [40101]: <-- data [2]
Mar 25 10:23:30.68: [40101]: --> [2:OK]
Mar 25 10:23:30.68: [40101]: SEND send PPS (partial page signal)
Mar 25 10:23:30.68: [40101]: SEND send MPS (more pages, same document)
Mar 25 10:23:30.68: [40101]: <-- [9:AT+FRH=3\r]
Mar 25 10:23:33.90: [40101]: --> [0:]
Mar 25 10:23:33.90: [40101]: MODEM <Empty line>
Mar 25 10:23:33.90: [40101]: <-- data [1]
Mar 25 10:23:33.91: [40101]: --> [2:^P^C]
Mar 25 10:23:33.91: [40101]: --> [2:OK]
Mar 25 10:23:33.91: [40101]: <-- [9:AT+FTH=3\r]
Mar 25 10:23:34.88: [40101]: --> [7:CONNECT]
Mar 25 10:23:34.88: [40101]: <-- data [7]
Mar 25 10:23:34.88: [40101]: <-- data [2]
Mar 25 10:23:35.38: [40101]: --> [2:OK]
Mar 25 10:23:35.38: [40101]: SEND send PPS (partial page signal)
Mar 25 10:23:35.38: [40101]: SEND send MPS (more pages, same document)
Mar 25 10:23:35.38: [40101]: <-- [9:AT+FRH=3\r]
Mar 25 10:23:38.62: [40101]: --> [0:]
Mar 25 10:23:38.62: [40101]: MODEM <Empty line>
Mar 25 10:23:38.62: [40101]: <-- data [1]
Mar 25 10:23:38.63: [40101]: --> [2:^P^C]
Mar 25 10:23:38.63: [40101]: --> [2:OK]
Mar 25 10:23:38.63: [40101]: No response to PPS repeated 3 times.

.... boom! looks like the other end just disappeared.

Any ideas?

--
Karl Denninger (karl@xxxxxxxxxxxxx)
http://www.denninger.net

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