call sign
I still remember an Air Littoral turning on heading assigned to another acft with the same number but different company.
In that case the carrier ops office is not responsible but it's a rare situation. Normally the planners lack of fantasy is incredible; I still remember that 2 years ago the FTI from all around germany to south Italy shore resorts where numbered something like 616/626/636/666/676 and all arriving at the same sector at the same time. The same happens every night with the mail flights to and from LIRF which call sign start with AZA and end with P , the numbers between depending on dep a/d (aza155P, aza165P, aza145P etc.).
I hope that in the future the carrier will put more attention on this safety related problem.
P.S. : we have a possibility: to change the callsign of an acft in contact if deemed necessary; I used it twice for the happyness of the crews involved and MINE!!!
Straccaletto