Here is the new version of my app, Siphon for iPhone and iPod Touch 2. Remember back in January 2008, Siphon was the first public version of VoIP/SIP for iPhone OS 1.X. It worked for the iPod Touch 1 (jailbreak) with the Touchmods microphones, in February/March 2008 Siphon was used for iPhone with French ADSL Provider. Since there were several versions for iphone but always with headset, because open source SDK and iPhone OS 1.X didn’t allow to access to the audio device.

Siphon is a SIP/VoIP client for the iPhone and iPod Touch 2 that allows you to save money on calls when WiFi coverage is available. You can enable SIP/VoIP on 3G/Edge network. But before you enable this option, you should read your mobile subscription, several mobile providers forbid VoIP on their data network.

Siphon allows you to make calls trough SIP providers all over the world using an interface similar to that of the iPhone. Unlike other applications, Siphon is a true SIP client, and connects directly to your SIP provider. Siphon uses the address book and favorites on your iPhone.

Siphon is already translated in 7 languages (English, French, Spanish, German, Italian, Portuguese, Danish). If you want translated in new language, you can contact me here. The parameters of several SIP providers are described here. This list can be extended with your information. And you can follow or create issues on my site.

Using Siphon is free for the moment, but I think this type of application can be sold to 4€. So if you appreciate this application, you could donate by Paypal button in settings.

Since Apple provided the SDK and AppStore, Siphon has been ported on this environment with all limitations we know. Siphon has been submitted 4 times since October 2008. But the first three times Apple refused for different reasons:

• Bad behavior of the interface,
• VoIP on 3G/Edge (no test, they just read a message)

All the times, I modified (if necessary) and extended Siphon functionalities without success. I submitted for the last time in December. Since December, 7 2008 I have no news from Apple.  It’s not completely true. The December 7th, Apple asked “unexpected additional time for review”, and since of that: nothing.

It seems that if you use SupremePreferences or ExtremePreferences then Siphon settings are not displayed.
The solution is to deactivate SupremePreferences or ExtremePreferences, and to define your SIP parameters. When all parameters is ok, you can activate your extension.