Hello,
We're a few days further, so I've managed to implement a work-around for displaying the wanted time format.
First of all, the timestamp option provided in the call rules can't be changed.
So, to have a custom time format we use the script variables /actions.
The built-in variable "Scripter. Customer Call Start Time" represents the beginning of the interaction.
It is formatted depending on the location of the PureCloud Agent who treats the call.
The timestamp contains some charachters showing the difference between your time and the GMT (e.g. +02.00).
But you can use "substr" method to cut off that part.
E.g.
Text Expression
02/08/2017 11:43:00 (+02.00) --> substr({{Scripter. Customer Call Start Time}},0,19)
------------
Callbacks scheduled in a script have a different time format: 2017-08-02T20:09:43.734Z
You can cut the timestamp in variables:
callbackYear = substr({{callbackDateRaw}},0,4)
callbackMonth = substr({{callbackDateRaw}},5,2)
callbackDay = substr({{callbackDateRaw}},8,2)
callbackHour = substr({{callbackDateRaw}},11,2)
callbackMinute = substr({{callbackDateRaw}},14,2)
And then concatenate them into a new variable (to write in the contact list or to display in the script):
{{callbackDay}}/{{callbackMonth}}/{{callbackYear}} {{callbackHour}}:{{callbackMinutes}}
This results in
02/08/2017 20:09