Cannot Fax with FPL

[jtan]

Hi

Cannot fax out using FPL (FreePhoneLine) keep getting com E-3 error.
Sharp UX-190 fax

Is there any special configuration need to be done on OBi200 ?

Thanks

[SteveInWA]

I haven't tried FPL.  In general, the service provider needs to support (and you must configure it to select, as your first choice) the G.711a or G.77u CODECs, not G.729 or any other CODEC.  You also need to set the fax machine to a maximum speed of 9600bps, with error correction turned off..  You need a clean, reliable internet connection, with no file sharing, video gaming or video streaming going on at the same time.  The OBi should be connected by an Ethernet cable, not WiFi.

If you are set up that way, and it still fails, then you should try some other internet telephone service provider.

[azrobert]

See:
http://www.obitalk.com/forum/index.php?topic=6625.msg41922#msg41922

I wouldn't turn off error correction. I currently use GV for fax without problems. Before I switched to GV, faxing for me was inconsistent. Turning off error correction did improve the success rate, but during testing I would sometimes get lines of garbage in the fax.

I suggest using your GV account for faxing.

[SteveInWA]

Error correction can definitely be a problem with VoIP faxing, as it's a primitive technology that tells the fax to re-transmit blocks of the image data (as opposed to using a mathematically-computed re-construction of valid data).  On a less-reliable VoIP connection, it will just result in endless attempts to re-transmit data, resulting in either a very long elapsed time to send a fax, or a complete failure.

http://support.hp.com/us-en/document/c00060802

For minor, momentary line quality problems (as on an old-fashioned analog POTS loop), ECM can be useful, but on a VoIP call, excessive jitter or dropouts can cause ECM to do more harm than good.

That's why it's commonly recommended to be disabled when faxing over VoIP.

[jtan]

@ Robert and @ Steve

Thanks for your suggestions.   

Somehow still cannot get FPL to work but GV works with my 1990 old Sharp UX-190 fax machine 

[jtan]

Can someone explain to me how and when to use this code for faxing , thank you.


*01, Modem Call, set($Noji1,200),set($Noec1,1),set($Cdm1,3)


Do I press *01 first, then dial the number to be faxed and press send fax ?

Do I need to disable that command after faxing ?

[drgeoff]

Can someone explain to me how and when to use this code for faxing , thank you.


*01, Modem Call, set($Noji1,200),set($Noec1,1),set($Cdm1,3)


Do I press *01 first, then dial the number to be faxed and press send fax ?

Do I need to disable that command after faxing ?

https://www.obitalk.com/forum/index.php?topic=8727.0
http://www.obitalk.com/forum/index.php?topic=6625.msg41922#msg41922
According to obiliving
"There is a new feature in the latest firmware (3.0.1.4109) that may help (do a f/w upgrade first).
It allows you to disable jitter buffer adjustment for the next outgoing call, by dialing a *code (of your choice). This is what you can do: Add a Star Code (under Star Code Profile) like this:

*01, Modem Call, set($Noji1,200),set($Noec1,1),set($Cdm1,3)

The 3 set() commands tell the obi to do the following for the next outbound call:
1. Disable Jitter Buffer Adjustment, and use a fixed jitter buffer length of 200 ms
2. Disable Echo Canceller
3. Use only G711u and G711a codec

Replace *01 with any code you like, as long as it does not conflict with other codes. Then dial the target number and see if the modem call works better."

Note the "next outgoing call" words.  Dial *01, hang up, then make your fax call. At that point it is disabled until you dial *01 again.

Note also that the command is not available for OBi1x0 devices.