Is there a possibility to make data communication between 2 SIP clients (with Asterisk in between) and have it over serial ports (not on standard ethernet)?
If yes, then how?
Thanks in advance for helping out.
On Thursday 31 July 2025 at 08:30:55, PriyeshGupta via Asterisk Community
wrote:
Is there a possibility to make data communication between 2 SIP clients
(with Asterisk in between) and have it over serial ports (not on standard
ethernet)?
There are probably many guides to using pppd from ~30 years ago which would
help you achieve what you want. You would end up with a ppp0 network device
on each machine, and after that, Asterisk doesn’t care.
Antony.
–
Was ist braun, liegt ins Gras, und raucht?
Ein Kaminchen…
Assuming the standard maximum rate of 115,200, one would need to do detailed calculation to see whether it could cope with 64,000 G.711 payload, plus stop and start bits, PPP overhead, IP overhead, UDP overhead, and RTP overhead, and leaving some room for signalling. My guess is that you won’t make it, although you might do so with a lower bit rate codec, or you might make it with a few percent to spare.
It’s basically not something someone would want to do in a production environment.
On Thursday 31 July 2025 at 08:30:55, PriyeshGupta via Asterisk Community
wrote:
Is there a possibility to make data communication between 2 SIP clients
(with Asterisk in between) and have it over serial ports (not on standard
ethernet)?
I’m fascinated to find out what the use case for this is.
What sort of hardware are you dealing with which still has serial ports and
doesn’t have ethernet, and where the distance between the devices is such that
you think you can get adequate bandwidth over RS232?
Please enlighten us as to why this is something you want to do.
Antony.
–
3 logicians walk into a bar. The bartender asks “Do you all want a drink?”
The first logician says “I don’t know.”
The second logician says “I don’t know.”
The third logician says “Yes!”
IP is network layer. Any IP communication is actually serial, in the broad sense, but there is no conflict with having IP at layer three and “serial” (in the sense used here) at layer 1, with PPP or other suitable link layer protocols. In fact, that is how I got my first home internet access.
Mine, too.
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