When Fax Modem Dials It is Causing a Fast Busy
audioresearch:
I should have the time tonight to implement exactly what you asked me to do (set Obi to factory defaults, etc). and I plan to do that and let you know the results.
I will also bring my laptop and/or my tower pc (both have modems) physically close to the Obi and try connecting it to the Obi with a short cable directly, rather than it's being connected to my house phone wiring and connecting the house phone wiring to the Obi, and see if that helps.
At least there is no problem sending/receiving faxes through the Obi other than the dtmf dialing problem on calls outbound from the modem. As a workaround, I set my modem to not require a dial tone before dialing and I just lifted one of my phone handsets and manually dialed the target fax number and then clicked on the final button of my fax software application to cause it to dial (the modem's dtmf dialing was now being properly ignored by the Obi or whatever else may have been aborting the call during modem dialing since I'd already dialed manually) and send the fax.
The fax was sent ok to the Hewlett Packard (HP) fax test number and I then received a faxback from HP a few minutes later ok. During all this, my Obi box had been configured to place all outgoing calls through its fxo port which was connected to my Verizon phone service (I verified that all outgoing calls were being placed through the Obi fxo port).
Again, the problem here has not been specific to just faxes, it has been a dial out problem by modems in general.
Thanks for your help Ronr, you've saved me hours of making mistakes!
audioresearch:
I did what you said, reset obi to all defaults, changed the digitmap you specified to (@@.) and finally outbound dialing by my fax modem worked and a test fax sent to HP out the fxo port was successful.
I then re-enabled auto provisioning, went onto the obitalk dashboard, and used it to reconfigure my obi box and install once again Google Voice. There I did specify that Google Voice should NOT be used as the primary line.
Again, faxes still dialed out and were transmitted with success.
If I used the obi dashboard to select Google Voice as the primary line, then the old problem of fast busies showed up again after my fax modem only dialed about 4 dtmf tones.
If I set the primary line back to being "line", faxes once again could be sent ok.
If I then set the default value for the digitmap you specified in place of (@@.), the problem returned.
So, it appears that setting that digitmap to (@@.) was the fix. I don't know a lot about programming the Obi box, but I assume if the digitmap for Google Voice were set to (@@.), then probably faxes dialed out through Google Voice would also work.
What exactly was it that setting the digitmap to (@@.) did that fixed the problem?
RonR:
Quote from: audioresearch on September 22, 2011, 07:54:28 pm
So, it appears that setting that digitmap to (@@.) was the fix.
That wasn't meant to be the fix. It was meant as a temporary means to see what the fax modem is actually dialing so that a proper DigitMap can be formed. If you look at the Call History and tell me exactly what the dialed sequence is, we can figure out what the fax modem is sending that is unusual and not being accepted by the default DigitMap.
audioresearch:
Ok, I did that.
Here is what the call history showed for the dialed-out number:
*7018884732963
I believe somewhere I had set my fax software to prepend *70 to the dialed-out number. That was for the purpose of turning off call waiting so that any incoming calls would not interfere with an outgoing fax transmission.
I'm getting a bit tired now, but I'll try to stay up a little longer and remove the dialing of the *70, restore the default digitmap to replace the (@@.) and see if the dialout problems go away.
I do however have to somehow turn off call waiting to dialout faxes. I'm too tired to search for how to do this, if possible, through the Obi box (if it can even be done at all that way) rather than prepending the *70 as my fax modem has apparently been doing.
I'll post again a bit later if I am able to complete this test tonight.
RonR:
It's the *70 that's the problem. Now that we know the problem, it's easy to fix. Leave the fax modem alone and set:
Physical Interfaces -> LINE Port -> DigitMap : ([2-9]11|[2-9]xxxxxx|1xxxxxxxxxx|*701xxxxxxxxxx)
You can add a similar rule to the SP1 DigitMap if you want to try the fax modem with Google Voice:
Service Providers -> ITSP Profile A -> General -> DigitMap:
(<*70:>1xxxxxxxxxx|1xxxxxxxxxx|<1>[2-9]xxxxxxxxx|011xx.|xx.|(Mipd)|[^*]@@.)
In this case, the *70 will be discarded.
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