Voip App Based On Freeswitch (Windows OS)

I am looking for an experienced Voip Developer in PHP. Application should support as bellow: --Authentication methods.(user ID / IP / MAC or ANI) --Internal calling user to user + International Calling . --Alias with DID Maping --PSTN ( over SIP)calling/ billing --DID forwarding --Call forwarding --Call forwarding on busy --Call forwarding on no answer --Voicemail- Simple Text Reader +(translation). --PIN request. --LCR(Least Cost Routing) / Carrier route --Enum Support --Video calling should support. --NAT traversal support (RTPproxy, Mediaproxy or same like SBC) --Text Messaging --Webphone --Callthrough --Click to Call (Callback) --IVR (Tell the Balance every time user call). --Web Call Back 1 Customer enters source and destination numbers in Click to Call back web page. 2 System calls source number 3 When user picks up the phone, he is connected to destination number 4 Ability to activate/deactivate service at any time 5 call should disconnect when the user go to negative balance. 6 user should send to IVR when the balance is negative. Over all Features: Authentication Calling Card script Client (PAP2)Devices Support + Mobile Users support. Active Call Statstic. Siptrace Identify the call problems. Real time billing and reports Reseller Modules (4 Level of Reseller Account ) (Note : I have a working Reseller Web Panel .I can provide those if needed Written in ASP.Net) Call Back IVR NAT traversal support Video Call Internal user call. - Development of userinterface and admininterface, possibility to edit the services listed Above - Implementation of additional payment methods (paypal, moneybookers etc) - Optimizations for Future Re-Used (mod rewrite ,urls, css, valid HTML) (Note : I have a Reseller Panel working on Web .I can provide if needed written in ASP.Net)