We are currently considering upgrading/replacing our phone system but want to keep and protect our investment in XMPP. We currently have 3Com NBX and they claim to be very standards compliant as far as SIP goes (in the latest revisions). My question is how ''generic'' is the Asterisk plugin, is it just SIP or does it depend on Asterisk API''s? It sounds like Cisco integration is do-able from the forums but is that just because of JTAPI support? We''d like to do other integration with our system so learning some of the ins and outs of SIP and our phone system are a given but what are the chances of forging ahead in the belief that SIP is SIP?
Any advice on this front would be most appreciated, I won''t hold a grudge if you say it ain''t easy :).