VoIP Phones - Linphone
Linphone is a software phone from linphone.org for Linux, OS X, Windows and also mobile platforms (iPhone, Android and Blackberry)
|Tested on FireBrick SIP Server||Yes|
|Versions Tested||3.5.2 (Ubuntu Linux)|
Don't forget to tick the 'Use IPv6' tickbox!
- Doesn't seem to support srv records for direct sip calls.
Click to call
There was a discussion about using a web based CRM system and clickable telephone numbers, (e.g. using tel://03333400999) and making it work with linphone, as at the time it was not working for the end user.
On Windows, it was suggested that if you like importing random .reg files from the interwebs, there's https://gist.github.com/mekegi/7951345