Alexander, > Btw, did you look at Kamailio which merged OpenIMS developments some time ago?
No I hadn't. Now that I have, I wished I didn't. IMS sure looks like a good barrier to entry. There's more to it than the proxy though (call continuity / handover requires B2BUA from what I just read, which makes sense). [SMS] > An issue with e-mail, as I see it, is that it relies on "polling" > model, while SMS is "push" model in its heart. Good point; again, my limited knowledge of GSM tech in play. > Jabber is an interesting idea! The only issue I see is that it > requires a TCP connection for every mobile connected to a BTS [...] Not if you use a Jabber chatroom, but in that case you're better off using AMQP anyhow since it really is a machine-to-machine alternative. My understanding of AMQP is that you can subscribe to multiple queues over a single connection so that should scale OK. (Based on my limited experience with node-amqp.) S.
