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 <j...@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 > Totowa, NJ 07512 > Phone: 201.806.2602 x2405 > Fax: 201.806.2604 > Cell: 973.390.1090 > www.xaccel.net <http://www.xaccel.net/> > > CONFIDENTIALITY NOTICE: > This e-mail message, including any attachments, is for the sole use of the > intended recipient(s) and may contain confidential > and privileged information which should not be shared or forwarded. Any > unauthorized review, use, disclosure or distribution > is prohibited. If you are not the intended recipient, please contact the > sender by reply e-mail and destroy all copies of the e-mail. > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com > <http://www.api-digital.com/> -- > > Check out the new Asterisk community forum at: > https://community.asterisk.org/ <https://community.asterisk.org/> > > New to Asterisk? Start here: > https://wiki.asterisk.org/wiki/display/AST/Getting+Started > <https://wiki.asterisk.org/wiki/display/AST/Getting+Started> > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > <http://lists.digium.com/mailman/listinfo/asterisk-users>
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