[asterisk-users] Modems

[Mark Boyce]

Hi John

Really depends on the speed of the modem in my experience even fax over voip is problematic outside a local network.

Are they external modems? If so have you considered moving the modems to the remote site and tunnelling the serial port over the internet?  That should be flawless.

Mark

> On 11 Feb 2020, at 19:22, John T. Bittner <john at xaccel.net> wrote:
> 
> Guys,
>  
> I have a customer that heavily uses modems, the problem they don’t work reliably with some of the carriers I have used like Level3.
> This is somewhat expected due to the limits in VoIP so I need a better solution.  
>  
> If I set up an asterisk system on customer premise with an FXS card in it and have calls sent to another asterisk box with a PRI can I get this to be more reliable and better connect speeds.?
> Any way to detect a modem call and turn off the echo canceller?
> 
> What if I use a lossless codec between the two systems, or would it be better to just run PCM to passthrough to the PRI.
>  
> Any ideas would be helpful.
>  
> Thanks
>  
> John Bittner
> CTO
> <image001.png>
> 380 US Highway 46, Suite 500
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