To the page content
T Business

Overview of all business phones

Frau wählt an Festnetztelefon mit Hörer am Ohr

FRITZ!Fons – Business telephones for FRITZ!Box products

FRITZ!Fon M3

Suitable for use with FRITZ! Box products, e.g. the FRITZ!Box 5690 Pro.

FRITZ!Fon M3 IP telephone

  • The DECT-GAP-compatible cordless telephone has all the standard telephony features of its class.
  • Optimised for use with FRITZ!Box products such as the FRITZ!Box 5690 Pro.

From €55.95 one-off payment
or €1.95 monthly

FRITZ!Fon X6

Suitable for use with FRITZ! Box products, e.g. the FRITZ!Box 5690 Pro.

FRITZ!Fon X6 IP telephone

  • The DECT-GAP-compatible cordless telephone has many convenient features and a freely assignable function key.
  • Optimised for use with FRITZ!Box products such as the FRITZ!Box 5690 Pro.

From €73.22 one-off payment
or €2.95 monthly

Gigaset – Business phones for the digitalisation box

Gigaset N670 - DECT base station

Suitable for the digitisation box.

Gigaset N670 against a white background

  • Compact, scalable DECT IP base station for digitalisation boxes.
  • The Gigaset N670 DECT offers small to medium-sized businesses the option of connecting up to 20 handsets.
  • Ideal for expanding digitalisation boxes with professional DECT devices

From €139.95 one-off
or €4.50 monthly

Gigaset S700H DECT - Handset

Suitable for the digitisation box – designed to provide optimal support for everyday work. 

Gigaset S700H against a white background

  • Large 2.4-inch TFT display with disinfectant-resistant surface.
  • Excellent battery life, with up to 320 hours of standby time.
  • Includes Bluetooth® 4.2 and an integrated 3.5 mm jack connection for operating both wireless and wired headsets.
  • Optimised for use with all professional Gigaset DECT systems. Can also be used with CAT-IQ & GAP-compatible base stations in single and multi-cell environments.

From €92.20 one-off
or €3.70 monthly

Gigaset SL800H DECT - Handset

Suitable for the digitisation box.

Gigaset SL800H against a white background

  • Large, brilliant 2.4" TFT colour display (8 lines),
  • Intuitive icon-based user interface,
  • Vibration alarm, hands-free calling and headset connection via Bluetooth® or 3.5 mm jack socket.
  • Automatic commissioning via the DECT base station on the digitisation box with connection to the system telephone directory and answering machine support with message display and retrieval.

From €124.95 one-off
or €5.00 monthly

Gigaset Maxwell C - Desk phone

Suitable for the digitisation box.

Maxwell-C against a white background

  • DECT desk phone offering maximum flexibility for professional communication.
  • Offers simple and convenient use of telephony functions.
  • Provides the ideal IP telephone solution with exceptional HD audio, crystal-clear TFT display and intuitive operation.

From €149.95 one-off
or €4.95 monthly

Cisco - Business phones for CloudPBX

Cisco 7821 Telephone Basic CPBX

Suitable for use with CompanyFlex CloudPBX.

Cisco-7821 against a white background

  • Cost-effective entry-level model for IP telephony with a clear monochrome display.

  • Ideal basic IP telephone for low to medium voice communication requirements.

  • Suitable exclusively for operation on the Telekom CloudPBX.


From €129.95 one-off
or €5.95 monthly

Cisco 8841 Standard CPBX Telephone

Suitable for use with CompanyFlex CloudPBX.

Cisco 8841 against a white background

  • Professional and powerful IP telephone with numerous functions for demanding users.
  • Suitable exclusively for use with the Telekom CloudPBX and guarantees reliable, secure, scalable voice communication with high fidelity.

From €219.95 one-off
or €9.95 monthly

Cisco 8851 Premium CPBX Telephone

Suitable for use with CompanyFlex CloudPBX.

Cisco 8851 against a white background

  • Professional and powerful IP telephone in a class of its own, with the option of integrating mobile devices.
  • Suitable exclusively for operation on the Telekom CloudPBX and meets the highest demands in the business environment.

From €269.95 one-off
or €10.95 monthly

Yealink – Business phones for telephone systems and cloud PBX

Yealink W75 Mini Multi-Cell

Eine leistungsstarke und flexible Lösung.

Yealink W75 Mini Multi-Cell DECT System Bundle

  • Mit nahtloser Roaming- und Handover-Funktionalität bietet es eine stabile, skalierbare und zuverlässige mobile Kommunikation über mehrere Etagen oder größere Büroflächen hinweg.
  • Optimiert für den Betrieb an der CloudPBX.

Preise auf Anfrage

Yealink IP Phone T53 - Basic Phone

Suitable for use with CompanyFlex CloudPBX and Swyx X (formerly Octopus NetPhone).

Yealink t53 right in front of a white background

  • Easy-to-use, powerful and expandable business phone with clear LC display for optimal desktop productivity.
  • It provides a cost-effective and smart introduction to IP telephony.

From €110.90 one-off
or €4.95 monthly

Yealink IP Phone T54W - Standard Phone

Suitable for use with CompanyFlex CloudPBX and Swyx X (formerly Octopus NetPhone).

Yealink t54w against a white background

  • Professional business telephone with an elegant, high-quality design, large TFT colour display and integrated Wi-Fi and Bluetooth.
  • It offers you wireless convenience for even more flexibility in your everyday office life.

From €170.90 one-off
or €7.95 monthly

Yealink IP Phone T57W - Premium Phone

Suitable for use with CompanyFlex CloudPBX and Swyx X (formerly Octopus NetPhone).

Yealink T57W front against a white background

  • Professional business phone with large multi-point colour touchscreen, integrated Wi-Fi and Bluetooth, and dual-port Gigabit Ethernet.
  • Offers the highest level of professionalism, optimum comfort, complete flexibility and optimal desktop efficiency for your business communications.

From €240.90 one-off
or €9.55 monthly

Yealink W59R – robust cordless IP telephone

Suitable for use with CompanyFlex CloudPBX.

Yealink W59R against a white background

  • A robust, IP67-certified cordless telephone for connection to a Yealink W90B base station.
  • The simple extension for existing systems.

From €149.95 one-off
or €6.95 monthly

Yealink W73H – IP DECT handset

Suitable for use with CompanyFlex CloudPBX.

Yealink W73H against a white background

  • Combine the advantages of wireless communication with extensive business functions such as VoIP telephony (Voice over IP).
  • A stylish and modern cordless office telephone with a colour graphic display, optimised for use with the W60B, W70B (single cell) or W90 (multi-cell) base stations.

From €79.95 one-off
or €3.95 monthly

Yealink W73P – Single Cell IP-DECT Handset and Base Station

Suitable for use with CompanyFlex CloudPBX.

Yealink w73p against a white background

  • Do away with complicated cabling and long charging times, and make your business communications flexible and mobile.
  • A powerful, cordless SIP telephone system consisting of an IP-DECT W70B base station and an IP-DECT W73H handset.
  • Optimised for operation on the CloudPBX.

From €129.95 one-off
or €6.45 monthly

Our awards

  • Customer Barometer: Internet B2B – Seal of Approval – Test Winner – Deutsche Telekom
  • Test seal_Digital service offering—Telekom hosting
  • Seal-Chip Test Winner Internet Provider 2025 Telekom
  • Siegel-connect landline test winner 2025 Telekom
  • Siegel-connect-landline-test-very-good-2025-Telekom
  • Siegel Connect Hotline Test Broadband Provider Test Winner 2025 Telekom