Fax to email

[nupton]

Has anyone managed to get this to work without a patton gateway?

We're trying to get it working with either a linksys PAP2 and or a GS-505, and have had no luck.

We originally tried to configure an inbound SIP trunk to connect to the Special FAX Extension Number, but it failed.
We then configured the inbound SIP to connect to an ATA which in-turn was connected via it's phone jack to another ATA configured in 3cx as a DID (PSTN) this gave us what we thouht to be the nearest results to success without really succeeding.
We can connect to the ATA configured as the PSTN-DID, and it's status shows off-hook, but we never get the faxed email. It's hard to say if the ATA actually ever produced a carrier signal to respond to the inbound fax as there is no speaker on the ATA and all we ever hear is our FAX machine's carrier request. The call does get routed through the defined extension, but the second ATA when it goes off-hook never answers the call. We've tried changing the Fax Tone Detection Mode and t.38 mode on both the FXO and FXS ports with the same results.

Anyone have any ideas.

 

[archie]

Here's a general question. If you have the fax to email successfully working, and you dial the fax number from your phone, what will you hear? Will you hear the 'modem' sounds like you would when you dial a normal fax machine?

I suppose it depends on PSTN gateway settings. If it is set to be dedicated fax on that line - yes, you will hear fax tones. Otherwise it will try to autodetect type of the call - wait, and than if fax tone is recognized - go to fax mode, if voice is recognized - go to voice mode. But, again, it completely depends on PSTN gateway capabilities and logic.

 

[nupton]

Archie; The T.38 settings on the Grandstream 4104 don't seem to have much in the way of logic.

T.38 Setting (Syntax: ch x-y: mode=val,rate=val,ecm=val;[...])
1. T.38 Setting:
(mode: 1:Relay(default), 2assthough)
(rate: 2400, 4800, 7200, 9600(default), 12000, 14400)
(ecm: 1:Enable(default), 0isable)

On our Linksys ATA (not a gateway...I know) there is actually a setting for autodetect or fax only.

We are convinced that the 4104 is answering the incoming fax call, but it never responds with a carrier signal to sync with the FAX machine. After it picks up there is 2 seconds of silence then we get a slow busy.

The server log confirms the direction of the inbound call to the 4104, and it's redirection to 888, but still no fax to email.

 

[SWB]

Here's a general question. If you have the fax to email successfully working, and you dial the fax number from your phone, what will you hear? Will you hear the 'modem' sounds like you would when you dial a normal fax machine?

I suppose it depends on PSTN gateway settings. If it is set to be dedicated fax on that line - yes, you will hear fax tones. Otherwise it will try to autodetect type of the call - wait, and than if fax tone is recognized - go to fax mode, if voice is recognized - go to voice mode. But, again, it completely depends on PSTN gateway capabilities and logic.

Ok. We have it setup to be dedicated fax. As nupton stated above we believe our setup is correct. I don't know if anyone has used this feature with an ATA and gateway, but then again I also haven't read anyone using/successfully configuring this feature :| .

 

[N_G]

As you can see from my earlier post; if you are using an ATA its nothing to do with 3CX Phone system. This is between the ATA and the Gateway and configuration is on that level, not on 3CX phone System level.

If you wish to use the Fax to email feature, then you need the configure as per the grandstream guide. This is working for many users.

 

[SWB]

Thanks Nick for your input. I understand how an ATA is a new addition in this setup. When we configure our PSTN line to route calls to an extension, we can dial through the gateway (configured per Grandstream/3CX guide - there's only a few settings needing to be configured) and reach that extension. However when we configure our PSTN line as all calls are faxes, and send to default fax 888, it fails.

 

[otaku-oni]

Hi SWB

It's in here where I maybe confused. Is the Sip User ID and Authenticate ID suppose to be the default fax extension, in this case 888 as setup in 3CX Management, General Settings under Fax?

Are you setting up the line in the gateway as 888 ? Make sure you are using a line number something like 10000 or so , or whatever your line numbers are.

Also can you post some logs ? Let see what the PBX is complaining about

 

[SWB]

Hi SWB

It's in here where I maybe confused. Is the Sip User ID and Authenticate ID suppose to be the default fax extension, in this case 888 as setup in 3CX Management, General Settings under Fax?

Are you setting up the line in the gateway as 888 ? Make sure you are using a line number something like 10000 or so , or whatever your line numbers are.

Also can you post some logs ? Let see what the PBX is complaining about

Hi otaku-oni. No the gateway is setup as the PSTN number (in our case 10003). That line is then setup to route fax calls (all calls are faxes) to 888.

I'll see if I can post some logs later on today. What we do see a lot is "No RTP packets were sent" after the gateway hands off to 888.

 

[nupton]

We finally got it!!! :mrgreen: We had a second profile activated, but not being used by the single channel we had configured, and when we unchecked that the gateway answered the inbound from our ATA, synced, and sent the PDF. We also had to uncheck the PBX delivers audio box in other options under the gateway config on the 3cx server.

Now...Please don't shoot me, but is there a way to send the PDFs to a UNC?