Softphone mobile phone calling app

To develop a mobile phone softphone app with specifications as below    Technical Requirements: The application should support the following codecs: G.722.1, G.723.1, G.726, G.728, G.711, G.729, G.723.1, iLBC,: G.711 (A and m-law),G.729A/B/D/E, AMR, GSM 6.10/EFR, iLBC, Speex · Voice: Real time Quality Monitoring (MOS) 3 independent phone lines Auto-Answer/Do Not Disturb Call Forwarding Full Duplex Audio Recording compress the audio data. · Support Video call and Video on demand and online TV  using H264 codec · Fully SIP compatible soft phone/dialer for PC2Phone and Mobile2Phone (iPhone, Android) application.  · Compatible with Windows 2000/XP/2003/Vista/Mac · NAT/Firewall traversal feature · Works with any 3rd party SIP Server · Supports SIP outbound proxy · Displays callers ACCOUNT balance · Displays call CREDIT time · Automatic Echo Cancellation · Automatic jitter buffer adjustment · Last number Redial · History of 10 last dialed numbers · Quick dial user list · Quick provision for customers, only user name and password required