Cannot terminate a call

What steps will reproduce the problem?
1. Install app on Android 2.3.6 device (Glaxy Ace2)
2. Connect app to my Asterix server
3. Dial extension 401 on my Asterix Server. *call works fine*
4. Press Home Button on Android 2.3.6 to go to home screen
5. In the Status Bar it shows a call in progress
6. Select the call from the status bar
7. App shows a dial pad screen (with top menu for History, Favourites etc
8. Cannot find any way to get back to the current call so I can hang up.

What is the expected output? What do you see instead?
Expected output is the Call Screen with the Red Hang-Up button
What I see is the dial pad

What version of the product are you using? On what device / operating
system?
Android 2.3.6 Galax Ace 2
App is a fresh install from Play Store in 2 Merch 2015
Help says "1.02.03 r2457

Please provide any additional information below.
I unticked dialer integraton when installing the app

Original issue reported on code.google.com by RogerHar...@gmail.com on 2 Mar 2015 at 9:07

Sanjivkumarroshan / csipsimple

Cannot terminate a call #2897