Sending a fax through Obi202?

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QBZappy:
Ostracus,

Quote from: Ostracus on July 05, 2012, 03:00:04 pm

Callcentric, did you go to the "DID forwarding" tab and set the line to "Fax"?


If this works UserAsdf owes you a beer.

UserAsdf:
The port speed is forced at 115200. The faxmodem is a USR Model 5637.

The instructions at nmu.edu appear to be for pre-configured dialup networks, or "dial up networking" as Windows calls it. I can't seem to find any of those windows on my system since I haven't used dialup since the late 90s. ;D

My DID is set to Fax in Callcentric and has been for a long time. :)

I've also confirmed fax reception to that DID a few days ago by sending a fax from faxzero.com.

UserAsdf:
Obihai responded to my ticket with a solution!

Quote from: Obihai Support

Please make sure that you disabled "SIP ALG" setting in your router.


It turns out "SIP ALG" was causing my problems. Once I disabled this on my router, I was able to send a fax ... from my voip.ms line!

I haven't tried sending via Callcentric (again) yet, but that's okay since I primarily use my voip.ms line for outgoing anyway. ;D

If anyone else runs across this problem and is using TomatoUSB firmware, the "SIP ALG" setting is in Advanced -> Conntrack/Netfilter -> Tracking / NAT Helpers -> SIP

Thanks everyone for all your help! :)

pc44:
Yay Obihai !!!  Nice work. :)

This is terrific news... and yet another reminder to the rest of us... to continue to disable/stop/kill/terminate SIP ALG! >:(

Glad to hear this!
pc44

UserAsdf:
I just tried sending a fax via Callcentric and it was necessary to change the priority of the G711 codecs.

With G711u I still had the same problem I described where fax tones were being silenced.
With G711a everything appears to work fine.

Summary:
voip.ms appears to work fine with G711u. Callcentric needs G711a for faxing.

Just more notes for anyone searching this thread at some point in the future. :)

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