"Depending on national requirements, the CSP may be required to report the ___location of the Target at the beginning and
end of CS calls and PS and IMS sessions on a per warrant or per intercept basis. It may also be a national requirement
for the CSP to report the ___location of the Target [...]"
https://www.etsi.org/deliver/etsi_ts/133100_133199/133106/14...
Here's an interesting quote from the above:
"Depending on national requirements, the CSP may be required to report the ___location of the Target at the beginning and end of CS calls and PS and IMS sessions on a per warrant or per intercept basis. It may also be a national requirement for the CSP to report the ___location of the Target [...]"