Connector B: RJ9 4P4C Male.
RJ9 4P4C to QD Quick Disconnect Headset Cable for Plantronics Telephone Lead
4P4C RJ9 RJ10 to 3.5 Headset Office Phone Adapter Cable Cord Converter Telephone
3.5mm to RJ9 4P4C Audio Extension Cable for Amplifiers Bluetooth Headset - 0.8m
RJ9 4P4C Female Socket to Female Adapter for Telephone Line
Durable Telephone Spiral Wire Four Core Phone Handset Curly Cord Cable RJ9 4P4C
Rj9 4p4c Telephone Cord Detangler Anti-winding Device Telephone Accessory
