Based on this product's specifications, here are some alternatives and similar models
Telephone extension cable GOOBAY TAE-F to RJ-11 4-pin, 6 m (international pinout)
Summary description:
GOOBAY TAE-F Cable (4‑pin, international pinout) is a 6 m telephone extension cable with a TAE(F) connector on one end and an RJ-11 connector on the other. Designed for connecting telephones, fax machines or analog voice devices where TAE and RJ-11 interfaces must be bridged. Sold in a polybag package for straightforward installation and replacement.