[SIPForum-discussion] regarding_exchange_IP_ports

[resalath ahamed]

Mohan,

Please read about the SDP negotiation in SIP.

The connection ip address in the SDP "C" has this information. Invite will
contain the originators details and 200OK will contain the terminators
details.Refer documents on SIP they are self explanatory on these
fundamentals.

Thanks and regards,
Resalath Ahamed.


On 4/19/07, mohan divakar <mohandivakar2005 at yahoo.co.in> wrote:
>
> Hi,
> I have a dought when a user agent can send his IP address and port in real
> time scenario.How both user knows each others ip and ports.
>
> For example i am calling(from sip phone) to a user who is also having sip
> phone.After recieng ACK from user,user sending data(RTP packets) directly
> to the another user,for this both the user knows the IP and ports.
>
> When i gone through some call flows in tech-invite.com i could't
> find when this exchange of ip and ports happen.
>
>
> Thanks in advance
> Mohan
>
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