Plantronics Amplifier Cable for NEC, Cisco Polycom EHS Extension

Amplifier Cable, Adapts M12/M22, MX10, SP, PLX to NEC or equivalent telephone systems.  Previous Part# 40287-05 (stamped as 88566-05 on the cable)

Also used as an extension cable to connect the APC-4 (APC-43) control connection into the Cisco expansion module 7914/7915/7916.  It extends the Plantronics APC-43 audio input to reach the headset jack on the phone.

When using a Polycom IP phone sidecar and the Plantronics APP-51 EHS. You require 85638-01 extension cable so the APP-51 cable can reach sidecar.

Old Poly part # 85638-01

New HP part # 85S12AA