This one caught my interest too...more out of curiosity! Keep in mind that RS485 max speed drops to 100kbps after a relatively short distance. And, 100kbps is RAW speed. If you encapsulated your audio stream in that you'd lose another 10%.
So why are you doing this? If you are running a 100m cable (4 wire + shield) why not just pull at cat5/6 cable instead? Or just send analog audio over 2 of the wires with the shield to keep out hum. If there is a need to use rs485 you could stream your audio over that connection - but I'm curious why first. We did some work for broadcast (radio station) doing AoIP and converting some analog feeds but this seems unusual. Jason -----Original Message----- From: asterisk-users-boun...@lists.digium.com [mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of Matt Fredrickson Sent: Wednesday, November 02, 2016 10:33 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] RS485 Audio device On Fri, Oct 28, 2016 at 7:09 PM, Jerry Geis <jerry.g...@gmail.com> wrote: > Hi All, > > Is there any devices or pair of devices that do audio over RS485 > and then convert to SIP for us in asterisk? > Of course a speaker and push button at the other end. > > Is there anything like that out there? Ok, I'll bite. How does one do audio over RS485? I've never worked with RS485, but from some brief googling it looks like it's a fancy version of RS232. I'm not sure where you'd get (analog) audio from on RS232. -- Matthew Fredrickson Digium, Inc. | Engineering Manager 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- Check out the new Asterisk community forum at: https://community.asterisk.org/ New to Asterisk? Start here: 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 -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- Check out the new Asterisk community forum at: https://community.asterisk.org/ New to Asterisk? Start here: 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