Post-Takeoff Reports: Climbing Away

Example in German (shown in translation):

Post-Takeoff Report Linz

Linz Tower · OE-CMV

PILOT: "OE-CMV, airborne, five hundred feet."
ATC "OE-CMV, ROGER, climb to two thousand feet, QNH 1013."
Example in English:

Post-Takeoff Report Vienna

Vienna Tower · D-EFGH

PILOT: "D-EFGH, airborne, five hundred feet, climbing to three thousand feet."
ATC "D-EFGH, ROGER, continue climbing to three thousand feet, turn left heading one-eight-zero degrees."
Once you have achieved a safe altitude and are clear of immediate runway conflict, the tower may issue a frequency change or tell you to report when you have left the CTR. At that point, your business on the tower frequency is nearly complete.