[hylafax-users] flow control problems?

[Blair McKay <bawb@openface.ca>]

Hi,

I have installed 3 multitech MT5634ZPX-PCI-V92 Internal Data/Fax/Voice Modem
Version 1.25p. After having wedging problems with USR modems.

Now I seem to be having problems with what I assume to be flow control.
Running the modems as class 2.0 resulted in multiple errors and failures, as
well as producing truncated and garbled tiff output. Rendering it almost
useless.

Running hylafax 4.1 on FreeBSD 4.5 I get the following contained in 90% of
the log files:

Jul 11 11:42:23.48: [  106]: <-- [9:AT+FRH=3\r]
Jul 11 11:42:26.58: [  106]: --> [0:]
Jul 11 11:42:26.58: [  106]: MODEM <Empty line>
Jul 11 11:42:26.58: [  106]: MODEM TIMEOUT: waiting for v.21 carrier
Jul 11 11:42:26.58: [  106]: <-- data [1]
Jul 11 11:42:26.59: [  106]: --> [2:^P^C]
Jul 11 11:42:26.59: [  106]: --> [2:OK]
Jul 11 11:42:26.59: [  106]: DELAY 1500 ms
Jul 11 11:42:28.10: [  106]: <-- [9:AT+FTH=3\r]
Jul 11 11:42:29.05: [  106]: --> [7:CONNECT]
Jul 11 11:42:29.05: [  106]: <-- HDLC<23:FF C0 02 04 4E A6 96 CE CE AE 32 04
A6 0E AE F6 4E E2 04 A6 32 04 04>
Jul 11 11:42:29.05: [  106]: <-- data [23]
Jul 11 11:42:29.05: [  106]: <-- data [2]
Jul 11 11:42:29.06: [  106]: --> [7:CONNECT]
Jul 11 11:42:29.06: [  106]: <-- HDLC<10:FF C8 01 00 77 5F 01 79 03 C0>
Jul 11 11:42:29.06: [  106]: <-- data [10]
Jul 11 11:42:29.06: [  106]: <-- data [2]
Jul 11 11:42:30.44: [  106]: --> [2:OK]
Jul 11 11:42:30.44: [  106]: <-- [9:AT+FRH=3\r]
Jul 11 11:42:33.54: [  106]: --> [0:]
Jul 11 11:42:33.54: [  106]: MODEM <Empty line>
Jul 11 11:42:33.54: [  106]: MODEM TIMEOUT: waiting for v.21 carrier
Jul 11 11:42:33.54: [  106]: <-- data [1]
Jul 11 11:42:33.55: [  106]: --> [2:^P^C]
Jul 11 11:42:33.55: [  106]: --> [2:OK]
Jul 11 11:42:33.55: [  106]: DELAY 1500 ms
Jul 11 11:42:35.06: [  106]: <-- [9:AT+FTH=3\r]
Jul 11 11:42:36.01: [  106]: --> [7:CONNECT]
Jul 11 11:42:36.02: [  106]: <-- HDLC<23:FF C0 02 04 4E A6 96 CE CE AE 32 04
A6 0E AE F6 4E E2 04 A6 32 04 04>
Jul 11 11:42:36.02: [  106]: <-- data [23]
Jul 11 11:42:36.02: [  106]: <-- data [2]
Jul 11 11:42:36.02: [  106]: --> [7:CONNECT]
Jul 11 11:42:36.02: [  106]: <-- HDLC<10:FF C8 01 00 77 5F 01 79 03 C0>
Jul 11 11:42:36.02: [  106]: <-- data [10]
Jul 11 11:42:36.02: [  106]: <-- data [2]
Jul 11 11:42:37.40: [  106]: --> [2:OK]
Jul 11 11:42:37.40: [  106]: <-- [9:AT+FRH=3\r]
Jul 11 11:42:40.50: [  106]: --> [0:]
Jul 11 11:42:40.50: [  106]: MODEM <Empty line>
Jul 11 11:42:40.50: [  106]: MODEM TIMEOUT: waiting for v.21 carrier
Jul 11 11:42:40.50: [  106]: <-- data [1]
Jul 11 11:42:40.51: [  106]: --> [2:^P^C]
Jul 11 11:42:40.51: [  106]: --> [2:OK]
Jul 11 11:42:40.51: [  106]: RECV FAX: RSPREC invalid response received
Jul 11 11:42:40.51: [  106]: RECV FAX: end
Jul 11 11:42:40.51: [  106]: SESSION END

(ad nauseum)

not all of them fail, some of them actually result in clear viewable tiff
files. But the amount of failures is disturbing (roughly 1 out of every 6
suceeds)

I have grep'd through all the config files and have no idea where its
getting the string "AT+FRH=3\r". Under kermit the string results in a error.

Any ideas?

Will upgrading to the current version have noticable results?
Are there modem config files containing proper strings that I am missing?

Thanks.

-- 
Openface Internet Inc.                              Blair McKay
Montreal, Canada                                    bawb@openface.ca
(514) 281-8585                                      Systems Administration




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