This option is used to test Hands-Free (sometimes called "Loudspeaking" or "Speakerphone") telephones.  Frequency response, sensitivity, and loudness levels in both Receive and Transmit modes can be tested.

Other tests available include Receive to Transmit and Transmit to Receive switching time, Transmit noise attenuation, and Transmit and Receive threshold tests.

Handsfree testing must be performed in an anechoic chamber for maximum reliability and repeatability.


The Handsfree Option can be used on the following Microtronix Test Systems:

- M503 WPTS

- M503 Telephone Acoustic Tester

- IP-II VoIP Test System

- IP Acoustic Test System