[SR-Users] Suggestion for VOIP Solution

Hi All List Members, I have worked on kamailio for one year. It is a great open source Skype like solution. Now i have to deploy a new solution with new requirements. Kindly suggest that what will be the best open source application will fulfill my requirements. I need the following facilities: (1) Call Recording (Outbound/Inbound) (2) On Demand Recording (3) Dictation Service (4) Complex Inbound Routing (5) IVR (Interactive Voice Response) (6) Auto Attendant (7) Client Recordings Mgmt & Playback Portal (8) Multi-level Client hierarchy / Subscription Plans (9) Voicemail (10) Time based Routing (Message Box) (11) Call Queuing & Conferencing (12) Bulk Download & Emailing (13) Call Whisper (14) Smartphone apps (SIP clients) Regards, /