Maybe its good feature for Issabel to develop windows and mac apps as well mobile apps,
For make the brand bigger and also to give feature for users to extend their functions of previous Elastix
CTI phone log call ,SMS for windows CHat branded software ,CLOUD etc....
1)for example why not install software with cti feature which you can interact your ip phone with pc you can command the unit or check call list with a lot of brand like VIBER and SANGOMA
2)User simply do not have to create more extension from previous ELASTIX ,simply like VIBER they can use multiple IP same extension with integrated chat and also other stuff or have ability to see who they missed call from or something else like sms program just like sangoma they did can interact so much better and faster,
3)CLOUD services for users they can use free CLOUD issabel on same network community edition so they can talk each other and promote even more project
4)USERS can pay amount of money to use ISSABEL cloud pbx hosted by issabel and have more options and buy phones from issabel
first thing first of course
regards