We are looking for company to develop for us Mobile SIP Client for
1) iPhone
2) Symbian
3) Android

Supported services should be:
1) Voice
2) SMS
3) Video Calls
4) IPTV - list of predefined internet TV channels

Featuring
• Connection over Wifi / 3G
• Language support - customizable
• Native Contact Phonebook
• Dial, Hang up, Redial
• Call Hold
• Call Mute
• Call Forwarding
• Call Waiting
• Speaker Phone
• Keypad Display
• Call History: All, Recent, Dialed, Missed
• DTMF: Inband / Outband / SIP INFO
• Account Setup
• Brandable Client (changing some images) like themes
• Codec Support G729, AMR

Example of Mobile SIP Clients === iPICO or FICALL or isipsimple sip clients from APP Store