Mobile Voip Dialer / SIP
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I am looking for an experienced Mobile application developer who can develop Branded Mobile SIP Client for the Android Platforms 2.1 and higher ( Works both on Phones and Tablets ) , I OS ( works on iphone , ipad , ipod Touch ) , Blackberry OS 5 & above , Symbian with the below features .
1) User friendly interface
2 ) supports G729, G723.1 , G711 U & A codec , Make and receive Calls
3 ) Works behind NAT / Firewall or on private IP . Most Important
4 ) VPN Tunnel for Voip Blocked countries
5 ) Should be 4 G Ready , besides 3 G , Wifi , Wimax
6 ) Balance Display
7 ) 3 party Conference , Should be able to recive GSM call when on voip call .
8 ) Standard features , like mute , speaker , call Recording , Redial ,Phone Book (Synchronize with Phone Address Book) , Local signaling (Dial tone, busy, ring back, etc.) , Silence Suppression , Echo Cancellation , Registration Timeout , website URL , signup link
We will need full source code for further development .
Developers who have already worked on same project please bid . Do not over Bid , we have strict upper limit ,off course lower is better :) .
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