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Konftel 300 Mx Expandable Conference Phone

Mobile Conference Phone with sim card slot and USB connection

Manufacturer Ref.: 910101083 Product Ref.: KO300MX
Konftel 300 Mx Expandable Conference PhoneKonftel 300 Mx Expandable Conference Phone 3Konftel 300 Mx Expandable Conference Phone 4Konftel 300 Mx Expandable Conference Phone 6Konftel 300 Mx Expandable Conference Phone 7Konftel 300 Mx Expandable Conference Phone 8Konftel 300 Mx Expandable Conference Phone 11Konftel 300 Mx Expandable Conference Phone 12Konftel 300 Mx Expandable Conference Phone 14

Key features

  • Mobile connection via sim card slot
  • HD voice
  • OmniSound 2.0® audio technology 
  • USB connection for softphone calls (unified communications)
  • Record and listen to meetings thanks to SD memory card
  • Expandable with additional microphones for larger rooms
  • Battery life of up to 30h.
  • Compatible with SKYPE for Business, Avaya, Cisco, Jabber 

  • Free standard shipping on this item
  • Delivery date with Express Shipping: 19/01/2021
  • 2 years standard warranty
£754.99 ex. VAT
£905.99 incl. VAT

Refurbished version also available
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Product information

The Konftel 300 Mx Expandable Conference Phone: an evolutionary system. Host your conference calls over mobile phone lines (SIM card) or communications Software (USB connection) 

The new Konftel 300Mx is simply revolutionary. Never before, has there been an audio conferencing system with such impressive and innovative functions.

Konftel 300 móvilWith its elegant design, this conference phone is ideal for spacious conference rooms (up to 30m2), as multiple expansion microphones can be connected to the device at one time. Thanks to OmniSound 2.0. technology, this conference phone offers excellent sound quality as well as HD Voice compatibility. This is the only mobile telephone that offers a higher audio quality than the standard PTSN landline!

The Konftel 300Mx is perfect for companies that desire a mobile communication solution. It connects to the mobile network through a SIM card and when fully charged, the battery can last for up to 30 hours of conversation use. The device can be recharged by connecting it to the charging cradle included. The battery is easily replaceable if you wish to charge it and add a new one. Thanks to the availability of the mobile network and the installed battery, the Knoftel 300Mx can host a conference call anywhere and at any time.  

Should you wish, you can insert a memory card into the Konftel 300Mx's SD slot and record your conversations. This feature is ideal when conducting interviews or documenting important calls and meetings. This feature also functions as a dictaphone. The mobile network operator that you choose will determine the number of participants that you can connect with at one time, but usually it is up to six contacts. The conferencing guide is another useful feature that allows you to save call groups, which is particularly beneficial if you frequently make multi-party calls.

The Konftel 300Mx is compatible with the majority of unified communications and can be connected to a computer through the USB cable included. Use the Line Mode feature to change between and combine USB and mobile connections with ease.  It is compatible with Skype for Business, Avaya, Nec, Cisco, Jabber, Mitel. The device is equipped with OmniSound® 2.0 technology, the patented audio technology from Konftel that allows you to obtain a crystal clear sound. If required, you can add expansion microphones for large meetings and double the area of reception. 



  • OmniSound 2.0: The new generation of audio technology
  • HD Voice
  • USB Connection: Allowing you to conduct calls over VoIP
  • Line connections: GSM 850/900/1800 - 3G/UMTS 900/2100 - USB 2.0.
  • Compatible with the major Unified Communications platforms
  • Compatible with SMS messenger 
  • Microphone: omnidirectional, 360˚.
  • Conferencing Guide
  • 2GB SD memory card allows the recording and play-back of meetings
  • Area of reception: up to 30 m2, > 10 people
  • Expansion microphone range: up to 70 m2, > 16
  • Directory: 500 contacts.
  • Import and Export contacts via a SIM card.
  • Call Groups: up to 20 groups 
  • Regularly updated through USB connection
  • 128x64 Backlit LCD screen 
  • Alphanumerical keyboard
  • Function keys: on/off, silence, volume +/volume -, 5 navigation keys
  • Volume 90 dB.
  • Anti-theft protection: Kensington security lock
  • Expansion Microphones (optional).
  • Battery: 5200 mAh, to 30 h of conversation / 270 h in standby mode
  • Charging Cable: adaptor CA  100-240 V CA/14 V CC
  • Size: 240 x 77mm
  • Weight: 1180 gr. (including battery)
  • Warranty: 2 years.
Warranty 2 years
Connects to Connects to mobile phones or SIM cards
Working environment Average room
Number participants Up to 12 participants
Wireless Non wireless
Expandable Expandable
Portable speakerphone Without portable speakerphones
Telephone keypad With telephone keypad
Screen With screen
Directory 500 contactos/20 grupos
Microphone Coverage 360° microphone coverage
Built-in microphones 3 microphones, Corded microphone
Additional microphones corded 2 add. corded microphones
Full Duplex With full duplex
Wireless Phone compatibility Not compatible
Mobile compatibility With SIM card
PC / MAC compatible Compatible with PC and MAC, With USB cable
Softphone compatibility Compatible with all softphones, Compatible with Avaya, Compatible with Cisco, Compatible with Lync, Compatible with Skype
Comes with Base 300M - batería - cable USB - alim - guía
Additional accessories With battery, With memory card, With PC cable, With power supply, With travel case, With wall mounting bracket, With wired microphones
Battery Lithium battery
Size 240x77mm
Smart Battery for Konftel 300W and 300M
£89.99 ex. VAT
Ref: KO300BAT
Universal Power Adapter for Konftel Phones
£42.99 ex. VAT
Ref: KO14V
Konftel Dual Battery Charger
£184.99 ex. VAT
Konftel Power Connection Cable for 300 series
£33.99 ex. VAT
Soft Travel Case for Konftel Conference Phones
£64.99 ex. VAT
Ref: KO300CASE
Expansion Microphones Konftel 55W/250/300 series
£126.99 ex. VAT
Konftel Charging Cradle
£33.99 ex. VAT
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