Friedom-Tech Posted October 27, 2010 Report Share Posted October 27, 2010 Is there any way for me to setup a PSTN trunk for a Windows system that has an inbuilt modem? If yes, how would i go about doing that? Please advise. Quote Link to comment Share on other sites More sharing options...
mattlandis Posted October 27, 2010 Report Share Posted October 27, 2010 Modem are not a pstn gateway and no way to make them do that. (i've checked ;-) You will need a pstn gateway / fxo. something like: http://windowspbx.blogspot.com/2010/02/mos...atton-411x.html I use patton 4114. Matt Quote Link to comment Share on other sites More sharing options...
UKenGB Posted October 30, 2010 Report Share Posted October 30, 2010 Modem are not a pstn gateway and no way to make them do that. (i've checked ;-) I can see no reason why a modem could not be used as a PSTN gateway. They are specifically designed to get the PSTN audio stream into the computer. The only problem is the lack of drivers to 'connect' it to the PBX. I am VERY keen to look into the possibility of using Apple's external USB modem as a PSTN gateway into a Mac. The problem is - no driver. I am not the only one to take this view. There is another Mac PBX project called Afelio and its developers make specific mention of their intention to do this. Quote Link to comment Share on other sites More sharing options...
mattlandis Posted October 30, 2010 Report Share Posted October 30, 2010 Once it works I'd like to here about it. Please email me directly. I'm sure usrobotics would be glad to put all their modem technology to good use that is becoming outdated. Matt Quote Link to comment Share on other sites More sharing options...
mattlandis Posted October 30, 2010 Report Share Posted October 30, 2010 Okay, I dug up an old thread i worked with somewhere else: http://www.teleon.net/product.html I wouldn't recommend it because in the end you'll buy a real fxo but if your a tinkerer try it and let me know. ;-) I hear one problem with modem is the chipsets work in half duplex? i dont claim to know the technical details. Matt Quote Link to comment Share on other sites More sharing options...
mattlandis Posted October 30, 2010 Report Share Posted October 30, 2010 Here is an interesting little device that i would say would have more hope: http://sangoma.com/products/hardware_produ...ny/usb_fxo.html but only for asterisk at moment i think. matt Quote Link to comment Share on other sites More sharing options...
mattlandis Posted October 30, 2010 Report Share Posted October 30, 2010 why not just use a sip trunk if lowest budget is big concern? then NO fxo is needed...thats even cheaper! ;-) take care, matt Quote Link to comment Share on other sites More sharing options...
UKenGB Posted October 30, 2010 Report Share Posted October 30, 2010 Here is an interesting little device that i would say would have more hope:http://sangoma.com/products/hardware_produ...ny/usb_fxo.html but only for asterisk at moment i think. matt Now that DOES look interesting. But again, it needs a driver, however, I'd say there's more chance of this than for e.g. Apple's USB modem, plus it is exactly made for the job which is never a bad thing. A USB connected FXO gateway seems like an ideal solution. Good find. Quote Link to comment Share on other sites More sharing options...
Vodia PBX Posted October 30, 2010 Report Share Posted October 30, 2010 I am VERY keen to look into the possibility of using Apple's external USB modem as a PSTN gateway into a Mac. The problem is - no driver. AFAIK only Sangoma tried to make a USB to FXO adapter yet. It seems to be very problematic because USB does support a syncronous mode; however this is a non-mainstream mode in the USB driver and therefore difficult to get working. The problem is the driver, not the hardware. Thats why everybody stays with PCI or stand-alone FXO gateways where you have full control over everything (even analog problems like noise). Quote Link to comment Share on other sites More sharing options...
UKenGB Posted October 31, 2010 Report Share Posted October 31, 2010 AFAIK only Sangoma tried to make a USB to FXO adapter yet. It seems to be very problematic because USB does support a syncronous mode; however this is a non-mainstream mode in the USB driver and therefore difficult to get working. The problem is the driver, not the hardware.Thats why everybody stays with PCI or stand-alone FXO gateways where you have full control over everything (even analog problems like noise). Any chance Snom/pbxnsip would create a driver for the Sangoma adapter? It would be such a useful device. Quote Link to comment Share on other sites More sharing options...
Vodia PBX Posted October 31, 2010 Report Share Posted October 31, 2010 Any chance Snom/pbxnsip would create a driver for the Sangoma adapter? It would be such a useful device. AFAIK you can do that already today. Sangoma offers a SIP interface to their hardware which works with pbxnsip/snom ONE. Quote Link to comment Share on other sites More sharing options...
UKenGB Posted November 1, 2010 Report Share Posted November 1, 2010 AFAIK you can do that already today. Sangoma offers a SIP interface to their hardware which works with pbxnsip/snom ONE. I must look into that, but how would it work? How would you direct the PBX to connect with SIP over USB? Quote Link to comment Share on other sites More sharing options...
Vodia PBX Posted November 1, 2010 Report Share Posted November 1, 2010 I must look into that, but how would it work? How would you direct the PBX to connect with SIP over USB? You actually talk SIP to a local IP address (typically 127.0.0.1) and the RTP also flows locally. Looks a little bit odd at first sight, but works nicely. I saw that also web cams start to use their own IP address locally, seems to become more and more popular. Also it makes it easier to design it for any operating system, no need for device drivers! Quote Link to comment Share on other sites More sharing options...
mattlandis Posted November 1, 2010 Report Share Posted November 1, 2010 @pbxnsip you pretty sure the usbfxo works? sangoma states its only for asterisk. (i'd be glad to be wrong) Matt Quote Link to comment Share on other sites More sharing options...
UKenGB Posted November 1, 2010 Report Share Posted November 1, 2010 You actually talk SIP to a local IP address (typically 127.0.0.1) and the RTP also flows locally. Looks a little bit odd at first sight, but works nicely. I saw that also web cams start to use their own IP address locally, seems to become more and more popular. Also it makes it easier to design it for any operating system, no need for device drivers! Certainly looks promising. I presume you would need to use special ports so the the appropriate device got the connection? Do you have a link to Sangoma product literature that covers this? Quote Link to comment Share on other sites More sharing options...
mattlandis Posted November 1, 2010 Report Share Posted November 1, 2010 @ukengb, if usbfxo works for you, let me know. if it is rock solid it may fit into our strategy. Matt Quote Link to comment Share on other sites More sharing options...
Vodia PBX Posted November 1, 2010 Report Share Posted November 1, 2010 you pretty sure the usbfxo works?sangoma states its only for asterisk. Not sure, better check with Sangoma. Quote Link to comment Share on other sites More sharing options...
mattlandis Posted November 1, 2010 Report Share Posted November 1, 2010 yup, checking... Matt Quote Link to comment Share on other sites More sharing options...
UKenGB Posted November 3, 2010 Report Share Posted November 3, 2010 yup, checking... I just read a VERY unfavourable review of this device so maybe it's not the saviour we were hoping. Still worth finding out if we can make it work though. Let us know what you find out. Quote Link to comment Share on other sites More sharing options...
mattlandis Posted November 3, 2010 Report Share Posted November 3, 2010 sangoma verified it does not work for windows. Actually we aren't looking for a saviour. ;-) We use pattons and are quite happy. But, yes, it would be nice to have a 1 or 2 port fxo that is really cheap. The only problem is that really cheap usually doesn't = "set and forget" but "install and have an eternal pest on your back" ;-) The 2 port patton = approx $350. (SN4112/JO/EUI) Because the cost is not that much different we only stock the 4 port at our company. I can recommend patton fully. Excellent product quality and excellent service. I will post if I find anything low end but I would caution against thinking too cheap. In the end people want something that works day in and out. Matt Quote Link to comment Share on other sites More sharing options...
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