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Topic # 120922 18-Jun-2013 16:50
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The ugly issue of faxing has rared it's ugly head again but this time I think it is actually the fax that is at fault and not the VoIP set up.

Have a Brother MFC6490cw set up with a Cisco SPA112 that is registering to a 2Talk fax line. Faxes can be sent to the fax with no issue. It works just like you would expect a fax to work on a POTS circuit. The issue comes with trying to send. The fax keeps showing 'comm.error' which apparently just means the line is not connected.

I have tried the config from the SPA112 on our work machine which is a big Canon something or rather. I can send and receive no problem which makes me think the config is good. I always use the NZ tone plan that sbiddle has set out for us on his blog and then just made the needed adjustments for faxing to work. I don't really understand how it all works though and if sending is any different to receiving.

Has anyone encountered particular issues with faxing on Brother equipment through VoIP? It has this 'compatibility' thing that can be set to 'Basic for VoIP'. I have tried all the different compatibility modes but nothing works for sending faxes yet as I say, receiving works fine.

Any light that could be shed would be excellent.

Cheers,
Sam

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Vocus

  Reply # 838781 18-Jun-2013 16:58
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Are you able to get a packet capture?  Would be good to see what's happening in terms of codec negotiation when the call is being placed; both inbound and outbound.

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  Reply # 838862 18-Jun-2013 19:17
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I don't know if things have got any better in recent firmware releases but the newer 1xx series ATA's were a complete and utter dead loss for faxing. Use an SPA2102 if you want things to work.





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  Reply # 838888 18-Jun-2013 19:44
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Could do a packet capture. I wondered about codec too. Is T.38 the codec? Or will it show as G.711?

Is the SPA2102 still available? Rang Ingram Micro a while ago and they have no ETA on when they might get some stock.

Like I say it works fine with our machine at work just not this Brother. Maybe the work machine is a bit more forgiving than this rubbish Brother machine.

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  Reply # 838899 18-Jun-2013 20:05
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chevrolux: Like I say it works fine with our machine at work just not this Brother. Maybe the work machine is a bit more forgiving than this rubbish Brother machine.

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Some years ago I tried to use a Brother MFC with a PAP2T.  No luck at all, even though an HP OfficeJet worked fine.  IIRC, I got similar "Comm. Error" messages to what you have seen.  Trying all sorts of modes didn't make any difference.

I ended up Scanning & Emailing as it got the same job done with minimal stuffing around.





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  Reply # 838902 18-Jun-2013 20:08
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It's very possible, yes.  Does it actually dial?  Can you set the speed (say, to 9600?) and disable colour faxing?

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  Reply # 838911 18-Jun-2013 20:25
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chevrolux: Could do a packet capture. I wondered about codec too. Is T.38 the codec? Or will it show as G.711?

Is the SPA2102 still available? Rang Ingram Micro a while ago and they have no ETA on when they might get some stock.

Like I say it works fine with our machine at work just not this Brother. Maybe the work machine is a bit more forgiving than this rubbish Brother machine.


SPA2102 is EOL. I have a stash left that I've kept solely for fax.

Your codec will depend entirely on the provider and whether you're sending T.38 in the initial invite or negotiating T.38 as a reinvite.

Since I only do fax on my network I can't comment as to what others support.


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  Reply # 841328 21-Jun-2013 22:33
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Its not set to dial "1" to get an outside line or anything??




Qualified in business, certified in fibre, stuck in copper, have to keep going  ^_^



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  Reply # 841401 22-Jun-2013 09:43
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webwat: Its not set to dial "1" to get an outside line or anything??


Haha no definitely checked the basics.

Will be going back monday and do a packet capture to see what is going on. In the mean time they are using the fax mail service so my hope is they get used to that so we dont have to screw around.

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  Reply # 841402 22-Jun-2013 09:45
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Whats a fax?

Cyril



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  Reply # 841537 22-Jun-2013 15:14
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cyril7: Whats a fax?

Cyril


Bloody oath mate! Hence why I really hope that like using the faxmail service. I really dont want to put much time in to this as I know the config works with other (more business orientated) machines.

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