Hi Dennis,
thanks for posting this. It inspired me to write a script that parses the calllist and generates html code that uses the nice habpanel template posted here: Matrix Theme for HABPanel. The result looks pretty good:
Instead of wiring the call to update the page to a cron expression, I have used an item changed trigger on the related fritzbox call monitor items of the tr-064 binding. This way the code is generated once after a new call has been made/received.
Regards,
Volker