2 Pack) Black RJ9 4P4C Straight or Reverse Cable. Custom Size From 2" - 10ft | eBay
Connecteur mâle RJ9 (câble plat)
Câble RJ9 à spirale mâle/mâle (2 mètres) - (coloris noir) - Câble RJ11, RJ9 & RJ12 Générique sur LDLC
Plantronics | 2.5mm to RJ-9 Cable Kit for Polycom, Vertical, Comdial, Cisco SPA and Panasonic
Converter Adapter | Converts RJ-9 to 2.5mm for phones that have a 2.5mm jack., (2200-11095-002) | Use with APP-50, APP-51 EHS for Polycom, Connecting telephone devices to 2.5mm headset mini jack