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 [xaccellogoemail] 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. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20200211/3a69fc3d/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 4300 bytes Desc: image001.png URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20200211/3a69fc3d/attachment.png>
I can't speak to the other items, but it's always better to have a dedicated FXS to answer the modem calls on an analog line. I've had to do this for ATT network router for their own management and it's always been fine. From: asterisk-users <asterisk-users-bounces at lists.digium.com> On Behalf Of John T. Bittner Sent: Tuesday, February 11, 2020 2:22 PM To: Asterisk Users Mailing List - Non-Commercial Discussion <asterisk-users at lists.digium.com> Subject: [asterisk-users] Modems 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 [xaccellogoemail] 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. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20200211/10052607/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 4300 bytes Desc: image001.png URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20200211/10052607/attachment.png>
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 > 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>-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20200211/63d2697d/attachment.html>