Try using Anveo's feature that allows you to upload a PDF. That will be more reliable than a PAP2T on a residential internet connection.

If you must use a physical fax machine, try setting Network Jitter Level to Very High or Extremely High if that option exists. You should also set Jitter Buffer Adjustment to Disable. Finally, set your fax to 9600 bps or "overseas mode" if it is not already. When sending or receiving faxes, don't use your internet connection for anything else unless you have very strict QoS rules set up in your router.

 

New report, pretty much in line of previous one. I listened Mango and tried to fine tune all parameters that is possible. It is still bad, very bad. Today I tried to send a fax and it redialled automatically until exhausted. Then I tried again and same result. COMM ERROR.

Then I sent fax through Anveo fax service. It was easy to do it on-line but I will never know did recipient get the fax or not? Never received any feedback from Anveo. I am not doing that any time soon as well.

 

Voip.ms faxing success. I used Epson Artisan 810 connected to Cisco SPA122 behind the router, on a voip.ms value line. The only configuration change I made in the ATA was: Fax Disable ECAN from "no" to "yes". All other settings unchanged. I called Canon Test Fax Service at 1-855-392-2666. The transmission was smooth send and receive. The Epson displayed communication error message on receive, but the Canon test page came in 100% perfect.
I will be using Epson only to send occasional faxes, not to receive.

 

This may have been said in the previous three pages but I've successfully faxed countless pages using a Canon M5770 multifunction device over... MagicJack.

 

Faxing with VOIPms - no go

Teksavvy 30/5 plan, OBIHAI 202 and VOIPms.

Faxing with a Xerox Workcentre 3315 and have less than a 40 percent success rate. It appears that the delay is just too great for this to work.

Should also point out that the fax machine is on a separate dedicated SIP (sub account) on port 2 of the OBI.

Any suggestions?

 

Look in the admin guide http://www.obihai.com/OBiAdminGuide.htm for how to set up a star code for $NOJI1 and $NOEC1. This might help for sending faxes, but not receiving. Also, lower the speed of your fax to 9600. If faxing is important to you, try VoIP.ms's beta online fax service or FreePhoneLine which supports T.38 (but has no technical support).

For a supported solution, AcroVoice has a non-beta online fax service, and their phone service supports T.38 which should ensure reliable faxing.

 

Possibly the answer is no. FAX was actually designed for analog network and cannot travel on VoIP network. Both are incompatible and the biggest challenge is the way VoIP signal coverts audio into computer language, it distorts the signals from fax and it can't be understood on the other hand. VoIP service provider to have this problem resolved.

 

A virtual fax service, such as MyFax, would provide a workaround.

 

FAX was actually designed for analog network and cannot travel on VoIP network

That is incorrect. A properly operating VoIP link is indistinguishable from a regular TDM digital voice channel. However, the question remains whether you get good enough VoIP over the public Internet. I have set up FAX over VoIP, a few times, and it worked well. There is even a FAX CODEC that's designed to work over VoIP

BTW, there hasn't even been a true analog network for many years. A regular POTS line is analog only as far as the exchange. It's G.711 digital elsewhere, unless someone runs a lower bandwidth CODEC to save costs.

 

I do not use it often but have had great success with voip.ms and obihai. Faxing worked fine for me.

 

Yes, It is correct because FAX communication uses the analog signal in a different way to regular voice communication. When VoIP technology digitize the analog voice communication, it is optimized for voice not for Fax signaling. Best way to use FAX machine with VoIP phone is to use VOIP gateway and connect it with ATA i.e Analog Telephony Adapter that supports T38.

However you can get this issue resolved via contacting VoIP service provider as well. He will guide you well to make FAX machine works well with VoIP phone system.

 

^^^^
That depends on the CODEC used. Cell phone CODECs, designed to minimize bandwidth are strictly voice only. However, the G.711 CODEC, as often used for VoIP, is the exact same CODEC used for the full 64 Kb digital voice channel. As I mentioned, I have set up FAX over VoIP. That said, there may be issues with using it over the public Internet, due to latency etc..



BTW, you're talking to someone who's worked in the telecom industry for many, many years and first came across digital voice carriers in 1975.