iOS: Open Source VoIP/SIP Objective-C Code

iphone objective-c open-source voip sip
Richard Stelling picture Richard Stelling · Sep 29, 2009 · Viewed 79.8k times · Source

I have been tasked with investigating the feasibility of writing an iPhone App to access our internal VoIP/SIP systems.

I've never coded anything close to VoIP before. Are there any open source VoIP/SIP libraries or examples in C or Objective-C?

An iOS App that I can skin and add our required features to (mainly UI related) would be the holy grail here.

Answer

pgb picture pgb · Sep 30, 2009

You may take a look at siphon (http://code.google.com/p/siphon/).

From their homepage:

Home of the World's first free SIP/VoIP application for iPhone and iPod Touch 1 and 2.

Siphon SIP/VoIP project is the first in his category that works on iPhone and iPod Touch 2 with headset for all SIP providers. It is a native application approved running on 2.X using internal micro/speaker and headset.

The Application supports the SIP standard, preserving compatibility with hundreds of SIP providers and offers a GUI which preserves the apple design of native iPhone applications.

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