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

[Zohair Raza]

Hi Kevin,

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


this says 4 active ports for one call

Regards,
Zohair Raza



On Wed, Feb 22, 2012 at 4:38 PM, Kevin P. Fleming <kpfleming at digium.com>wrote:

> On 02/22/2012 06:26 AM, virendra bhati wrote:
>
>> Does anyone know the correct information of my question. All are move
>> round and round .
>>
>
> What does that mean? I answered your question with the correct and
> complete information.
>
>
>> On Tue, Feb 21, 2012 at 7:28 PM, Kevin P. Fleming <kpfleming at digium.com
>> <mailto:kpfleming at digium.com>> wrote:
>>
>>    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
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