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

[Kevin P. Fleming]

On 02/21/2012 07:51 AM, Alex Balashov wrote:
> As many ports as required by the nature of the call, i.e. the
> protocol(s) used for the bearer.

For an IAX2 call, the answer is 'zero' for all of those call types (at 
least the ones that are supported in IAX2, not all of them are).

For protocols that use RTP for media transport, two ports are required 
for each media stream (one for RTP, one for RTCP).

-- 
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
Jabber: kfleming at digium.com | SIP: kpfleming at digium.com | Skype: kpfleming
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at www.digium.com & www.asterisk.org