smart & reduced
to basics
uc for office

With its wideband audio performance, the smart USB handset Plathosys CT 400 PRO provides optimum speech quality and a natural tone when PC telephony is used. It is certified as Unify Ready and suitable for Skype for Business.

Additional feature: internal loudspeaker

Take notes during a telephone call and still have both hands free - the internal loudspeaker, which can be switched on for a group conversation, enables convenient and efficient communication at the workplace.



CT 400 PRO  /  acoustics

in the office

Wideband Audio Performance

The integrated wideband audio performance provides optimum speech quality and a natural tone when PC telephony is used. The HD audio quality lies within the frequency range of 100 Hz to 7,500 Hz in accordance with ETSI ES 202739.


The support of the Hearing-Aid-Compatibility standard (HAC) ensures that the CT 400 PRO also enables wearers of hearing aids to use the latest communication technology.

Further acoustic features

  • Acoustic shock protection (in accordance with ETSI EG 202518 and UL60950-1)
  • Echo cancellation
  • External 8 Ohm passive loudspeaker can be connected *

* These functions can be configured using the API (Application Programming Interface).

CT 400 PRO  /  api programming

api programming
for improved performance

The Plathosys CT 400 PRO can be modified individually using the available API software.

Our team is happy to support you.

API programming

  • Hook on/hook off function
  • Open listening function via internal loudspeaker in Wideband quality in accordance with ETSI ES 202 740
CT 400 PRO  /  technical data

functions at a glance

  • Acoustic shock protection
  • Wideband audio quality
  • Echo cancellation
  • HAC technology
  • Hook on/hook off function*
  • Dial tone signal via internal loudspeaker
  • Open listening function via internal loudspeaker

Technical Data

  • Stable housing made of flame-retardant plastic PC-ABS (standard UL 94)
  • Power supply (USB: 5V, max. 500 mA)
  • USB 1.1, USB 2.0 & USB 3.0
  • USB connection cable 1.50 m
  • Coil length handset cable 50 cm
  • The system can be addressed via 32-bit and 64-bit

Scope of delivery

  • Handset with spiral cable
  • USB base station with USB connection
  • Operating instructions 

System requirements

  • MS Windows XP
  • MS Windows 2000
  • MS Windows Vista
  • MS Windows 7
  • MS Windows 8.1
  • Standard USB port (1.1. or higher)

* Functions can be configured with the help of an API. / EU Directive 1995/5/EC-compliant (R&TTE Directive)/CE mark

CT 400 PRO  /  purchase

order &

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Do you need some advice?

Contact us
Advisor Hotline: +49 6175 79596-0