COMfortel® C-400

Professional IP conference telephone with four wireless microphones, for small, medium and large meeting rooms

Optimal understanding due to 2 fixed and 4 wireless microphones

Best acoustic characteristics due to wideband audio

3 SIP accounts

Encrypted speech data transmission (SRTP)

VoIP codecs G.722 (wideband), G.711, G.726 and G.729

Your advantages in detail

The conference telephone is the best choice for your meeting room. The four wireless DECT microphones optimise the range of your system. So you guarantee that every participant in the conference would be understood perfectly.

The high audio quality ensures a natural speech transmission without interruptions.

Compatible products

Features & technical data

Everything you need to know about our products comes now. Scroll down for more information.

System and comfort features

  • Automatic display illumination
  • Ringtone, handset and hands-free speaker volume adjustable
  • Microphone mute
  • Calling number and name display (CLIP/CNIP) if registered in the local and the central phone book of the proprietary ICT system
  • 10 programmable abbreviated dialling keys
  • Hands-free talking, full-duplex at the base unit
  • Connection and use with a PC via USB connection
  • Phone book, 200 entries local
  • Access to a central phonebook via LDAP

IP Features

  • 3 accounts
  • Date and time via NTP
  • Digest authentification (MD5)
  • High audio quality with echo cancellation and comfort noise generation (CNG)
  • HTTP/HTTPS webserver integrated
  • Mass roll outs via provisioning server (HTTP, HTTPS, FTP and TFTP)
  • Prioritisation of voice data (Diff Serv)
  • SIP compliant (RFC 3261)
  • STUN (UDP over NAT)
  • Tone dialling during a call (RFC 2833, SIP Info, In-Band)
  • Transport Layer Security (TLS)
  • Encrypted speech data transmission (SRTP), RFC 3711 and RFC 4568
  • VLAN support (IEEE 802.1q)
  • VoIP codec G.722 (wideband) with supporting hardware, e.g. COMpact ICT systems (firmware from 7.2), Asterisk or IP-Centrex solutions
  • VoIP codecs G.711μ-Law/a-Law, G.726 and G.729
  • VoIP codec preselection

Communication platforms

  • Asterisk Solutions
  • IP-Centrex solutions, Hosted PBX

Base Unit



Power Supply

via separate PoE power supply

System connection

Ethernet 10/100/1000 Base-T

USB port

1x Micro USB

Power consumption

2.5 W 5 W


illuminated LCD with 158 x 57 pixels, monochrome


4, multi-coloured

Operating elements

keypad with vanity code, 8 function keys, 3 soft keys

Casing material

plastic, black

Dimensions (w x h x d)

272 mm x 67 mm x 340 mm


approx. 1,100 g



External microphones



Power supply

Ni-MH batteries, 2.4 V, 400 mAh

Transmission protocol

DECT 6.0


1 LED, multi-coloured

Talk time

up to 6 h

Standby time

up to 70 h

Casing material (microphones)

plastic, black

Delivery Scope

  • Basic unit
  • 4 DECT microphones
  • 4 Ni-MH batteries
  • PoE power supply unit including connection cable
  • LAN cable RJ-45/RJ-45 (length approx. 2 m)
  • LAN cable RJ-45/RJ-45 (length approx. 7.5 m)
  • USB cable
  • Operating instructions

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Top Sellers

Sales Configurator (SC)

- the easy way to the right system

Customer requirements for communication solutions are constantly increasing and with them the complexity and scalability of ITC systems. Project planning therefore takes up more and more time. Here, the free Sales Configurator offers a simple and fast solution. It gives you the opportunity to efficiently plan communication solutions and create project planning proposals.

Sales Configurator (SC)