[Serusers] Fwd: need help implementing sip callback

---------- Forwarded message ---------- From: Rogelio Serrano <rogelio.serrano(a)gmail.com> Date: Oct 11, 2007 5:18 PM Subject: Re: [Serusers] need help implementing sip callback To: Atle Samuelsen <clona(a)cyberhouse.no> On 10/11/07, Atle Samuelsen <clona(a)cyberhouse.no> wrote: i want to ring phone a. then when phone a picks up i would play recording that phone a has n minutes for this call. then i ring phone b and when he picks up connect to phone a. so whats the best way to do this? when the two parties are pstn phones? the most obvious method is to use an rtp proxy. how is nat hairpin possible when i dont know which udp port both parties are going to use? -- Lay low and nourish in obscurity -- Lay low and nourish in obscurity