On 02/22/2012 06:41 AM, Zohair Raza wrote:
Hi Kevin,

http://www.freepbx.org/support/documentation/howtos/howto-setup-a-remote-sip-extension


this says 4 active ports for one call

It certainly does. Whether it is accurate or not depends on the definition of 'call', as has already been pointed out in this thread.

I could also, definitively and accurately, state that the number of UDP ports required for a 'call' is 5 (five).

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