Re: [hylafax-users] T.30 T2 Timeout, Digital Phone Lines and Modem Speed

["Brad Stevens" <bstevens@xxxxxxxxx>]

I had this issue over POTS lines and it ended up being the USR modems
incompatibility with hyla.  I bought multitech pci modems and the
problem went away.  Search the archives for my issues on this problem
I've detailed the model of modem I used there.

-Brad

-----Original Message-----
From: hylafax-users-bounce@xxxxxxxxxxx
[mailto:hylafax-users-bounce@xxxxxxxxxxx] On Behalf Of Robert Morse
Sent: Friday, January 23, 2009 9:57 AM
To: hylafax-users@xxxxxxxxxxx
Cc: Robert Morse
Subject: [hylafax-users] T.30 T2 Timeout, Digital Phone Lines and Modem
Speed

Hello,
I'm a relative newbie running Hylafax 4.4.4 under Linux 5.  It is  
connected to a US Robotics V.92 modem, which is connected to a  
residential Comcast digital phone service.
Below is a portion of the log file that happens very frequently (i.e.,  
partial page transmission and then an abort with T.30 T2 timeout).   
I'm searched the web and read a few
articles on the hazards of modems and digital phone service, but  
haven't found a clear solution (or at least clear to me).

One of the suggestions was to slow the modem rate down.   I modified  
the config.ttys0 file, and changed ModemRate to 9600.  I restarted  
Hylafax, as well as reset the modem.  When I look at the logs,
Hylafax is reporting that it's connecting at 14400.  What other  
settings do I need to change to force the connection to 9600 or less?

This is a residential installation, so I don't need multi-port modem  
cards.   Is there a single line modem alternative to my USR modem that  
will play well with a digital phone connection?

For what it's worth, I had Comcast out, and they had no clue about a  
possible solution.  In fact, they said this was the first they ever  
heard of this.   Guess all those Google hits on
modems and digital phone service must be pranks! ;-)

Thanks for any and all suggestions.


Jan 23 04:22:54.70: [25178]: RECV received RCP frame
Jan 23 04:22:54.70: [25178]: --> [10:NO CARRIER]
Jan 23 04:22:54.70: [25178]: <-- [9:AT+FRH=3\r]
Jan 23 04:22:54.90: [25178]: --> [7:CONNECT]
Jan 23 04:23:04.90: [25178]: <-- data [1]
Jan 23 04:23:04.91: [25178]: --> [2:OK]
Jan 23 04:23:04.93: [25178]: RECV: 4352 bytes of data, 1067 total lines
Jan 23 04:23:04.93: [25178]: RECV keeping unconfirmed page
Jan 23 04:23:04.94: [25178]: RECV FAX (000002110): from 7207330441,  
page 7 in 0:18, INF, 3.85 line/mm, 2-D MMR, 14400 bit/s
Jan 23 04:23:04.94: [25178]: RECV FAX (000002110): recvq/ 
fax000002110.tif from 7207330441, route to <unspecified>, 7 pages in  
6:15
Jan 23 04:23:04.94: [25178]: RECV FAX: T.30 T2 timeout, expected  
signal not received
Jan 23 04:23:04.94: [25178]: <-- [9:AT+FTH=3\r]
Jan 23 04:23:04.98: [25178]: --> [7:CONNECT]
Jan 23 04:23:04.98: [25178]: <-- data [3]
Jan 23 04:23:04.98: [25178]: <-- data [2]
Jan 23 04:23:06.16: [25178]: --> [2:OK]
Jan 23 04:23:06.16: [25178]: RECV FAX (000002110): session with  
7207330441 terminated abnormally: T.30 T2 timeout, expected signal not  
received
Jan 23 04:23:06.16: [25178]: RECV FAX: bin/faxrcvd "recvq/ 
fax000002110.tif" "ttyS0" "000002110" "T.30 T2 timeout, expected  
signal not received"
Jan 23 04:23:06.16: [25178]: RECV FAX: end
Jan 23 04:23:06.16: [25178]: T.30 T2 timeout, expected signal not  
received
Jan 23 04:23:06.16: [25178]: SESSION END


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