Hi there,

I'm using Phoner's SIP features....

I notice when using Phoner on a UDP connection it sends carriage return line feeds every few seconds, presumably to keep the connection to the server alive.

However, when using it with TCP it still seems to send some of this data on UDP. I was wondering what this is used for!

The scenario is that I have a proxy running TCP and UDP on one machine on port 5060 and Phoner running on another machine on port 5062.

When I initiate a call over TCP, everything works fine but I start to see a few UDP packets containing \r\n characters being sent from port 5064 to port 5060 on my proxy. It stops when the call is terminated.

Any ideas what this is for?

Thanks!
-Herg