Thanks, Dennis. I actually have a reason for that particular setup. I want to create a notification server somewhat like Acrobits' SIPIS, but I want it to be SIP client agnostic. On its own there's no utility to having a server that simply redirects both ways. I want to do some processing in the interim, necessitating custom coding and the use of something like PJSIP. Here's the scenario: VoIP Service Provider = VSP Client Notification Service = CNS (e.g. Apple's APNS) User Agent Client = UAC User Agent Server = UAS Assumptions: - UAS runs separately from UAC - UAS is registered with VSP on behalf of UAC Scenario: - Incoming call: VSP to UAC - UAC is not registered with UAS Sequence: 1. VSP sends INVITE to UAS 2. UAS sends a notification to CNS 3. CNS notifies UAC 4. UAC registers to UAS 5. UAS sends REDIRECT to VSP 6. VSP sends INVITE to UAC When the UAC is registered, the UAS will just do a simple redirect either way. Does that make more sense? +Dan On Jan 20, 2014 4:09 PM, Dennis Guse <dennis.guse at alumni.tu-berlin.de> wrote: > > You could simply go setting up Astersk / FreeSwitch or similar and register with the remote provider. > > --- > Dennis Guse > > > On Mon, Jan 20, 2014 at 2:38 PM, Daniel Ellison <daniel at syrinx.net> wrote: >> >> Hey all, >> >> This is my first post to the PJSIP mailing list. Hopefully what I'm thinking of doing is possible with PJSIP, or indeed with SIP generally. I'm very new to SIP so my terminology may be off and my ideas may be wildly inappropriate. >> >> Here's what I want to do: I want to set up a persistent SIP User Agent Server that simply redirects both ways. If a call comes in from a VoIP Service Provider, my UAS would send a redirect to the VSP pointing to a SIP User Agent Client. Similarly, if the UAC initiates a call, the UAS redirects the UAC to the VSP. This assumes that the UAC is registered with the UAS and the UAS is registered with the VSP. >> >> Is the above scenario feasible? As I said, I'm new to SIP so I'm not sure, for example, whether the UAC needs to register with the VSP in order to receive an incoming call in this scenario. I'm hoping that I can just leave the UAC registered with the UAS and the UAS registered with the VSP and have it all magically work. :) >> >> Thanks, >> Dan >> _______________________________________________ >> Visit our blog: http://blog.pjsip.org >> >> pjsip mailing list >> pjsip at lists.pjsip.org >> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > >
