Symptom:
IX5000 will show a connected G-711u audio only call in the Web GUI that cannot be disconnected. The call usually shows being connected for 22+ hours. Total packets transmitted and received show almost identical in size. A ?show call status? and ?call state? from command line will show no call connected.

Conditions:
Here are the steps to repro:
1. Kepler system 1 calls Audio-only IP phone  1080 -->  1000
    Audio-Only page shows the data flow, timer starts counting
2. the call lasts around 5 mins, then end the call
    WebUI shows no stream data
3. Kepler system 1 calls Kepler system 2      1080--->  1088 
    WebUI shows AV video timer and AV audio timer are same, please see the attachment
    WebUI shows Audio-Only duration timer reconnect the previous time and keep going won't clean up
4. end Kepler system 1 to Kepler system 2 call, there is no call at all. But the Audio-only call WebUI page still show the data flow and timer is still keep going