Developing My Custom Sip Android App

[ronus]

HI
I'm developing a custom Android app for our Office that connects to the Windows 3CX Voip system for Audio cal between Extension on Out Internet.
I Install Latest 3cx on Windows Server 2012 R2 on Dedicated Server on Hetzner Data Center.
Working With Android 3CX App Is Ok and no Problem,
but My Custom App
Sometimes there are problems to registering Phone, When My app Phone not registered , But show Extension Status Is Online and Always show online.
I used Linphone sdk to connect 3cx System on My Custom App.
Sometimes the number of Phone registered for an extension may be show repeated Device on Phones of 3CX Web Management and the incoming call or sometimes the outgoing call cannot Work.
Sometimes works the App is installed for the first time.

My marrow doesn't work anymore.
If you have a solution, help me

If you have a more suitable Android SDK for a replacement by ,Please help,
If you have a more appropriate Android SDK instead of Linphone, Please help us.
Thanks and Best Regards

 

[craigreilly]

Tell us the issues you are having with the 3cx developed version of the App. Perhaps someone can help with the pains.