[asterisk-users] how many UDP ports is required for 1 call

[Phil Frost]

On 02/22/2012 08:01 AM, virendra bhati wrote:
> *Will these port of UDP, RPT [assume you mean RTP] or Both ?*
It's evident from your response that you do not have a solid 
understanding of networking fundamentals. The full answer to your 
question will quickly go out of scope of this list and become an 
introduction to IP fundamentals. So, I suggest you start by reading these:

http://en.wikipedia.org/wiki/OSI_model
http://en.wikipedia.org/wiki/Internet_Protocol
http://en.wikipedia.org/wiki/User_Datagram_Protocol
http://en.wikipedia.org/wiki/Real-time_Transport_Protocol