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APC-45 (Cisco EHS Cable): How to Install

This procedure explains how to install the APC-45 EHS cable, which is compatible with the following Cisco phone models:

  • SPA512
  • SPA514
  • SPA525G2


To Install the EHS Cable

  1. On your base, set your compatibility switch and speaking and listening volumes to the following:
    SettingCS500 SeriesMDA200Savi 700 Series
    Speaking Volume222
    Listening Volume333
     Image of SettingsImage of SettingsImage of Settings
  2. Connect your EHS cable to your phone as follows:
    Image of how to connect the APC-45