How to buy additional handset cords?

[Chris708]

What about the lead end that plugs into the back of the phone and winds through the retainer tabs?

1. For the Yealink phones, the longer lead to the back of the phone is about 3.5 to 4 inches.
2. The shorter end that connects to the handset is about 1 to 1.5 inches.
3. They also should be black and not charcoal gray.

Its hard to find a reliable supplier that has these cords for the above criteria.