[Nottingham] HylaFax

Matt Jones msjones at fidler.co.uk
Wed Oct 22 12:55:34 UTC 2008

Hi martin.

I am using Suse Linux Enterprise 10.0.

The modem us running to an Avaya VOIP system which runs to a ISDN 30  

After running the lsof /dev/ttyS0 it just takes me back to a prompt.



Sent from my iPhone

On 22 Oct 2008, at 13:21, Martin <martin at ml1.co.uk> wrote:

> Matt Jones wrote:
>> Yep the modem is connected as /dev/ttyS0 and is all hooked up to the
>> serial port. When using minicom I can initialize the modem and dial  
>> an
>> outside line.
>> What do you mean by reverse the polarity of my phone line connection?
> In domestic pstn phone lines, you get two or three wires that are
> 'live'. Most modem leads only connect to two wires. There's 40 - 50v  
> dc
> (and high source resistance) on there with your phone 'on-hook' (not  
> in
> use). Some electronic phones/modems require one of -40V or +40V across
> their wires even though they should be polarity independent and either
> way /should/ work fine. You may need to swap the two wires over in  
> your
> slave phone socket/extension (you must not touch the 'master' socket),
> or make up a two-wire adapter lead.
>> I have searched the web and followed many tutorials. But the end it
>> always the same. I can fax to the queue but the modem status just  
>> keeps
>> saying the same; waiting for modem to come ready.
> That suggests that either hylafax hasn't got read-write permissions to
> the /dev/ttyS0 or something, or something else is keeping control of
> /dev/ttyS0.
> Check permissions and check:
> lsof /dev/ttyS0
> Or you might just have the wrong initialisation string being sent to  
> the
> modem.
> Let us know what you find.
> What distro are you using?
> Good luck,
> Martin
> -- 
> ----------------
> Martin Lomas
> martin at ml1.co.uk
> ----------------
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