Long story short: The cable as described and quickly delivered, unpacked and with socket (socket with phone icon) and routers (DSL socket, gray) connected. After initialization of the connection the DSL LED lit and the access to the Internet was built, because the access data has been entered before. As simple as that!
The connection provides under the contract up to 16,000 kbit / s and at a moderate line loss are thus nevertheless still approximately 12400 kbit / s in there. All in all very satisfactory. The DSL-Reseller incidentally Avego (endesha AG). Recommended!