Re: SIP fax sending software?

[Ross Tajvar]

I've found T.38 5o be very reliable. We have many customers using it daily.

On Wed, May 30, 2018, 5:39 PM Andy Ringsmuth  wrote:

>
> > On May 30, 2018, at 4:10 PM, Andrew Latham  wrote:
> >
> > T.38 if your provider supports it
> >
> > Try https://github.com/hehol/t38modem
> >
> > On Wed, May 30, 2018 at 3:15 PM John R. Levine  wrote:
> >
> >> Can anyone recommend software that sends faxes over SIP?  I have plenty
> of
> >> inbound fax to email services, but now and then I need to send a reply
> and
> >> it looks tacky to use one of the free web ones that put an ad on it.
> >>
> >> I know that if I wanted to pay $15/mo there are lots of lovely services
> >> but we're taking about one fax a month, maybe, here.
> >>
> >> Ideally it'd take a postscript or PDF or Word document and a phone
> number
> >> and fax it to that number.  I have Ubuntu, FreeBSD, and MacOS boxes.
> Any
> >> suggestions?
>
> I ran into this issue when we went to a SIP phone system earlier this
> year. We opted to go with HelloFax and it has worked well.
>
> They do have a free account which allows you to send up to 5 faxes a month.
>
> 
> Andy Ringsmuth
> a...@newslink.com
> News Link – Manager Technology, Travel & Facilities
> 2201 Winthrop Rd., Lincoln, NE 68502-4158
> (402) 475-6397(402) 304-0083 cellular
>
>

Re: SIP fax sending software?

[James Cloos]

> "MT" == Max Tulyev  writes:

MT> Have Asterisk with E1 connection to PSTN (not VoIP). Is there some
MT> software to let it work as a fax and modem?

For that, as Seth said, use iaxmodem.  And use hylafax to feed iaxmodem.

-JimC
-- 
James Cloos  OpenPGP: 0x997A9F17ED7DAEA6

Re: SIP fax sending software?

[Seth Mattinen]

On 6/3/18 9:05 AM, Max Tulyev wrote:

Hi All,

Looking for similar, but other one.

Have Asterisk with E1 connection to PSTN (not VoIP). Is there some
software to let it work as a fax and modem?



iaxmodem

Re: SIP fax sending software?

[Max Tulyev]

Hi All,

Looking for similar, but other one.

Have Asterisk with E1 connection to PSTN (not VoIP). Is there some
software to let it work as a fax and modem?

30.05.18 23:13, John R. Levine пише:
> Can anyone recommend software that sends faxes over SIP?  I have plenty
> of inbound fax to email services, but now and then I need to send a
> reply and it looks tacky to use one of the free web ones that put an ad
> on it.
> 
> I know that if I wanted to pay $15/mo there are lots of lovely services
> but we're taking about one fax a month, maybe, here.
> 
> Ideally it'd take a postscript or PDF or Word document and a phone
> number and fax it to that number.  I have Ubuntu, FreeBSD, and MacOS
> boxes.  Any suggestions?
> 
> Regards,
> John Levine, jo...@iecc.com, Primary Perpetrator of "The Internet for
> Dummies",
> Please consider the environment before reading this e-mail. https://jl.ly
> 

Re: SIP fax sending software?

[James Cloos]

> "JL" == John R Levine  writes:

JL> Can anyone recommend software that sends faxes over SIP?

I've had good luck using asterisk's res_fax_spandsp, sending to twilio
(which supports t38).  Freeswitch's t38 support also is said to work well.

Hylafax, iaxmodem and asterisk has worked well for mulaw faxing, provided
a low-jitter path to the pstn provider, but lately I've been using the
above path.

Of course that is probably only one fax every few months.

-JimC
-- 
James Cloos  OpenPGP: 0x997A9F17ED7DAEA6

Re: SIP fax sending software?

[Eric Kuhnke]

I would recommend simply outsourcing it to voip.ms for $2 a month. Port
your fax DID to them.

Incoming fax arrive as PDF in your choice of email inbox.

You can send outbound fax from a predefined list of your own email
addresses, destination to f...@voip.ms. Put the destination phone number in
the subject line, attach the document to be faxed as a PDF.

There is also an https web portal for uploading documents to be faxed,
there is no tacky addition of advertisement.

https://wiki.voip.ms/article/Virtual_Fax

On Wed, May 30, 2018 at 1:13 PM, John R. Levine  wrote:

> Can anyone recommend software that sends faxes over SIP?  I have plenty of
> inbound fax to email services, but now and then I need to send a reply and
> it looks tacky to use one of the free web ones that put an ad on it.
>
> I know that if I wanted to pay $15/mo there are lots of lovely services
> but we're taking about one fax a month, maybe, here.
>
> Ideally it'd take a postscript or PDF or Word document and a phone number
> and fax it to that number.  I have Ubuntu, FreeBSD, and MacOS boxes.  Any
> suggestions?
>
> Regards,
> John Levine, jo...@iecc.com, Primary Perpetrator of "The Internet for
> Dummies",
> Please consider the environment before reading this e-mail. https://jl.ly
>

Re: SIP fax sending software?

[John Osmon]

On Thu, May 31, 2018 at 12:54:05AM -0400, John R. Levine wrote:
> >You *can* get a fax across a G.711 connection if your throughput,
> 
> My SIP provider supports T.38.  How much difference does that make?

It can make a great deal of difference.  


You change the dynamics from:
   
   fax      fax
  modem <->  VOIP  <-> modem
 


Into something more like:

   T.38 service
  fax   -   fax
 modem <->  modem <-> IP <-> modem <-> modem
-


Fax communications have a data envelope that don't play well with
anything that has latency/jitter/loss issues that don't act/feel like
a POTS system.  Also, the envelope doesn't recover well from errors.
So --- faxes fail.

So, you terminate the envelop at each end, and plug them together with 
and IP connection.  You may still have problems, but a single issue
doesn't necessarily mean that you have to terminate the transmission and 
start over.

More (and better/more accurate) details with the article I linked
earlier:   http://www.soft-switch.org/foip.html

Re: SIP fax sending software?

[John R. Levine]

You *can* get a fax across a G.711 connection if your throughput,


My SIP provider supports T.38.  How much difference does that make?

Regards,
John Levine, jo...@iecc.com, Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. https://jl.ly

Re: SIP fax sending software?

[John Osmon]

On Wed, May 30, 2018 at 11:14:12PM -0400, John Levine wrote:
[...FAX over IP...]
> I don't really care if it's flaky.  For one fax a month a few retries
> are not a big deal.  But hellofax's free 5 pages a month will probably
> do the job.

For folks that have made it this far, you might be interested in this
article that I've kept a link to for over a decade:
   https://www.soft-switch.org/foip.html

You *can* get a fax across a G.711 connection if your throughput,
latency, and jitter align and create what looks like a DS0 to the
two modems.  And if does it for a long enough time to get the entire
fax through.  

Tune the fax machines so they only run 9600 bps or less, and you might
just make it.

Good luck.  You're going to need it.

Re: SIP fax sending software?

[John Levine]

In article  you write:
>Have you considered paying the $0.50 per page to have the local copy
>shop send the once-a-month faxes?

Since the local copy shop is about a half hour drive from here, no.

I don't really care if it's flaky.  For one fax a month a few retries
are not a big deal.  But hellofax's free 5 pages a month will probably
do the job.

R's,
John

Re: SIP fax sending software?

[Andy Ringsmuth]

> On May 30, 2018, at 4:10 PM, Andrew Latham  wrote:
> 
> T.38 if your provider supports it
> 
> Try https://github.com/hehol/t38modem
> 
> On Wed, May 30, 2018 at 3:15 PM John R. Levine  wrote:
> 
>> Can anyone recommend software that sends faxes over SIP?  I have plenty of
>> inbound fax to email services, but now and then I need to send a reply and
>> it looks tacky to use one of the free web ones that put an ad on it.
>> 
>> I know that if I wanted to pay $15/mo there are lots of lovely services
>> but we're taking about one fax a month, maybe, here.
>> 
>> Ideally it'd take a postscript or PDF or Word document and a phone number
>> and fax it to that number.  I have Ubuntu, FreeBSD, and MacOS boxes.  Any
>> suggestions?

I ran into this issue when we went to a SIP phone system earlier this year. We 
opted to go with HelloFax and it has worked well.

They do have a free account which allows you to send up to 5 faxes a month.


Andy Ringsmuth
a...@newslink.com
News Link – Manager Technology, Travel & Facilities
2201 Winthrop Rd., Lincoln, NE 68502-4158
(402) 475-6397(402) 304-0083 cellular

Re: SIP fax sending software?

[Stephen Satchell]

On 05/30/2018 01:13 PM, John R. Levine wrote:
> Can anyone recommend software that sends faxes over SIP?


No.  Just NO.  The problem is that all the modulation methods that FAX
transmission use requires time stability in the analog channel, and
there is no way that SIP is going to be that stable.

How do I know this?  A number of years ago, a cable system maker asked
me to consult on why V.29 fax wouldn't work over their voice-over-coax
solution.  I used a 23-tone test on the analog channel for 24 hours, and
found the phase jitter was off the charts -- no way that fax machines
could send faxes over the analog channel.  (Traced it to the timing
chain oscillating across the system.)

Have you considered paying the $0.50 per page to have the local copy
shop send the once-a-month faxes?

The other answers have far superior suggestions sending fax over TCP/IP.

Re: SIP fax sending software?

[Andrew Latham]

T.38 if your provider supports it

Try https://github.com/hehol/t38modem

On Wed, May 30, 2018 at 3:15 PM John R. Levine  wrote:

> Can anyone recommend software that sends faxes over SIP?  I have plenty of
> inbound fax to email services, but now and then I need to send a reply and
> it looks tacky to use one of the free web ones that put an ad on it.
>
> I know that if I wanted to pay $15/mo there are lots of lovely services
> but we're taking about one fax a month, maybe, here.
>
> Ideally it'd take a postscript or PDF or Word document and a phone number
> and fax it to that number.  I have Ubuntu, FreeBSD, and MacOS boxes.  Any
> suggestions?
>
> Regards,
> John Levine, jo...@iecc.com, Primary Perpetrator of "The Internet for
> Dummies",
> Please consider the environment before reading this e-mail. https://jl.ly
>


-- 
- Andrew "lathama" Latham -

Re: SIP fax sending software?

[James R Cutler]

> On May 30, 2018, at 4:13 PM, John R. Levine  wrote:
> 
> Can anyone recommend software that sends faxes over SIP?  I have plenty of 
> inbound fax to email services, but now and then I need to send a reply and it 
> looks tacky to use one of the free web ones that put an ad on it.
> 
> I know that if I wanted to pay $15/mo there are lots of lovely services but 
> we're taking about one fax a month, maybe, here.
> 
> Ideally it'd take a postscript or PDF or Word document and a phone number and 
> fax it to that number.  I have Ubuntu, FreeBSD, and MacOS boxes.  Any 
> suggestions?
> 
> Regards,
> John Levine, jo...@iecc.com, Primary Perpetrator of "The Internet for 
> Dummies",
> Please consider the environment before reading this e-mail. https://jl.ly


Not SIP, but over TCP/IP, I have been happy with iFax from www.ifaxapp.com 
 which takes a  document and a phone number and sends 
the document to that number. Charging is against credits which are available at 
varying prices. 

The iFax application is available for macOS, Windows, iOS, and Android. I use 
it on iOS and macOS. See the website for more details on inbound fax, document 
scanning, HIPAA, and other features. 

James R. Cutler
james.cut...@consultant.com
PGP keys at http://pgp.mit.edu