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I am curious about this to. I was wrong my boss has Sprint not At&t . Is there an additional port that needs to be opened up if the tunnel is not used outside of the typical ports the 3cx server uses?

So the 1.1.4 version will not work with ATT over 3g is that correct? If it work over wifi, is there a port I would have to open? Hopefully will eventually get the tunnel version like Android, was waiting all month :)

here is the final response I was given to by 3CX Support. They did remote control of my server and put some time into it but nothing worked. As per the notes of the config guide, it is not possible to use the 4004 with a provider. This issue will appear with other FXS devices. It is the...

So how would you use a pci modem on the server to use windows faxing? I thought you still needed a phone line to dial out?

I was never able to get the Grandstream 4004 to work with outbound faxing via Nexvortex. I paid for a support contract to 3CX in hopes that it would happen but they werent able to make it happen, was an expensive venture with the hardware and support costs so I gave up on outbound voip faxing...

Anyone have any luck using Relayfax to send and recieve faxes? For some reason i come with with an error of "Call Interupted" when trying to send. The whole faxing and VOIP is a real pain, I bought a grandstream gateway and tried to use an analog fax and that didnt work. Even worked with 3cx...

one thing interesting is it look like it did kind of provision because it has my fax extensions if i go into the fxs ports tab on the gateway web config well one thing i see when looking at my log is that i am getting an error on my 3cx that the credentials dont match. I dont see where to add...

I am trying to get the grandstream 4004 setup to fax per this article http://www.3cx.com/blog/voip-howto/faxing-gxw-4004-4008-4024/ I seem to have everything setup right but it wont provision. I cant see it in the pstn devices. One thing interesting is once i go back into the setup of the 4004...

Ok guys it is working! I had already confirmed my line was setup for t38. Nexvortex has great customer support FYI> But i followed this thread http://www.3cx.com/forums/fax-server-problem-solution-provided-18484.html Most importantly i changed a config file as said in one of the posts. Re...

Yep, I use Nexvortex and I was told they are T38

Kind of odd not seeing it in the log, however my provider said they did some test calls. I am still learning this all, but could it be something with the with the inbound parameters on the provider setup? I havent changed anything with it

Trying to get the 3cx fax server working on incoming and here is a snippet from my log. The error from my PSTN fax machine says "Busy" Now if i call my PSTN fax number from my cell phone i hear a beeping Just trying to get the faxes emailed to me, "nothing fancy". 15:02:42.649 [CM503008]...

Well, even though they are sending the data over now, looks like its still not displaying. Probably some kind of setting i need to make?

Thanks WIllow, sounds like you are right. I use Nexvortex and to get CNAME it is 3 bucks per line a month.

is this a voip or 3cx limitation? Guess not curious why it cannot work like typical PSTN phones?

So if an entry is not in the phonebook you will never get full caller id? For example if I call into my traditional PSTN line wether it be a land line or even my cell phone the name is displayed.

On my incoming calls I am not getting any "Caller Id". I am getting the number to display but not the incoming persons first and last name. I am on 3cx version 10, yealink phones and using nexvortex as a sip trunk. Thanks

Well, finally purchased me a 16 user license and testing out the system some more and in my server event log i am seeing the following error The IP 192.168.1.1 has been blacklisted for 1800 sec. Reason: Too many failed authentications! 192.168.1.1 is the internal IP address of my firewall...

Yeah i resolved the problem it was two parts error. I had to replace localhost with my ip address. i am just testing on my local machine but it still wanted that. Secondly i had to setup my rule w hich was wrong! cool

Not sure why it says incoming call is rejected when actually i am making an outgoing call