Voxalot / SIP Broker Support Forums - View Single Post - When do RTP packets go via proxy server instead of direct?

boatman · 08-14-2008, 11:15 PM

When calling from one Voxalot registered SIP phone to another, I noticed that sometimes the RTP (voice) packets travel through Voxalot's proxy, and sometimes by a direct route to the other party. I could not find any documentation about this issue, but it seems that if the receiving party's NAT settings are correct then the RTP packets go directly between the two endpoints. On the other hand, if the receiving party's NAT settings are incorrect then the RTP packets will be sent through Voxalot's proxy for the entire call duration.

Does anyone know more about this?

08-14-2008, 11:15 PM	#1
boatman Senior Member Join Date: Jul 2007 Location: Oregon, USA Posts: 365 Thanks: 17 Thanked 77 Times in 64 Posts	When do RTP packets go via proxy server instead of direct? When calling from one Voxalot registered SIP phone to another, I noticed that sometimes the RTP (voice) packets travel through Voxalot's proxy, and sometimes by a direct route to the other party. I could not find any documentation about this issue, but it seems that if the receiving party's NAT settings are correct then the RTP packets go directly between the two endpoints. On the other hand, if the receiving party's NAT settings are incorrect then the RTP packets will be sent through Voxalot's proxy for the entire call duration. Does anyone know more about this?