iPhone app - SIP Softphone Client

Avg Bid (USD)
Project Budget (USD)
$750 - $1500

Project Description:
We need a developer to write an iPhone Application for us.

The app needs to be able to perform basic telephony functions such as:

-Registering to a SIP/IAX Server
-Answering calls
-Dialing a number and establish a PSTN call
-Dialing a username and establishing a SIP call
-Put user on hold and streaming on hold music
-Have 2 lines (where once a call has been established can merge)
-Call conferencing while the user is on a call
-Changing presence status, i.e. available, away, do not disturb
-Connecting to 2-3 SIP servers at once
-Showing caller display while connected
-Having the ability to add and configure SIP/IAX account settings within the app

This purpose of the app is to develop the core code that performs the SIP/AIX communications. We would NOT like to use open source code for the SIP core functionalities.

We require a developer who has worked with SIP/IAX for iPhone and has proof. Once you can demonstrate this, then we will discuss talks further.

Similar apps are Telephone for Mac OSX, X-Lite for PCs.

Skills required:
Cocoa, iPhone, Mobile Phone, Objective C, VoIP
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