Passcode required to end call and toggle mute. Really?

I have my Passcode Lock set to 15 minutes with an 8-digit minimum alpha/numeric passcode (corp. policy). If I'm on a call where I don't use my phone (4S with iOS 7) for more than 15 minutes the screen locks and I no longer have my call controls to let me mute/unmute or end the call. So, in order to do any of these basic call functions I have to wake up the phone...swipe...type my 8+-digit passcode...switch to the phone app (if needed)...then hang up, or get off mute. Amy I totally missing something here or did no one at Apple actually try managing a call using iOS 7?

BTW, my current workaround is to swipe up to enable airplane mode to kill my calls. Really.

 

Hrm. When I wake up my phone I see the name (or number) of the person I called at the top, followed by the mm:ss of the current call below. I then only get a > slide to unlock option at the bottom. If I slide to unlock the only option is to type in the passcode. No call controls at all :





(Note: I have a bluetooth keyboard attached - so no on-screen keyboard is displayed)

Any ideas??

Could my corporate policy have done something to remove the call controls? I do get other content (emails, texts, etc.) that show up in the middle of the lock screen. Just no call controls.

 

I checked on my corporate policy and it doesn't do anything to restrict call controls when the phone is locked. Of course that's not to say there couldn't be anything else involved with the CP that could be causing a conflict; but it's not intentionally doing so. Would be good to find others having this problem to try to identify any commonalities that could be contributing to this.

I've got a 4S on 7.0.2