We have our own telephony infrastructure and we now require a SIP softphone App to connect to our platform for our team to use.
I need a sip softphone application for Android and IOS, with support for TLS,SRTP,ZRTP and XMMP(encrypted).
Features required.
* Full support for TLS,SRTP,ZRTP and XMMP(encrypted).
* Full Source Code to make mods after project completion.
* Support G729, G723, Codecs
* Application should work all Networks 3G/Wi-Fi/2G or GPRS.
* Phone full contact book sync
* Real time Balance Display
* Loudspeaker
* Account to Account Balance transfer
* Call Duration
* Call Log
* Redial/Call from Call logs
* Simple to use User Friendly Interface.
I need only expert and very experienced in SIP Phones to integrate with our existent FreeSwitch+A2Billing and Asterisk+A2Billing servers.
I'll hire best bidder with best experience and will hire on permanent basis for Technical Support as well.
Full understanding of all Codecs.