Best Isdn Telefon 2026

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Last Updated - 27.03.2026

Best Choice

01

GEQUDIO

Gequdio IP Phone GX3+ Set with Power Supply Adapter - SIP VoIP - Fritzbox, Telecom Compatible - Hands-free Calling & Colour Display - German Instructions (PDF) for Fritz Box, Sipgate, Telecom Speedport.

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Instructions as PDF: You will receive access to our illustrated step-by-step instructions (English language not guaranteed) so you can insert the phone immediately. Just plug it yourself and go. -
Fast Delivery and Return Policy: Test our products with peace of mind. VAT invoices are automatically received in the view of your orders after dispatch.
Experts: Benefit from our German-language support and direct sales. We are an audio technology company directly from Berlin. -
Easy phone system: Use a high-quality IP phone on your existing FRITZ!Box and benefit from a unique HD-voice quality. You will also receive a branded power supply adapted to the product.
Compatible: Works on both the FRITZ!Box and other telephone systems that support the SIP-protocol. Benefit from multiple cables in one device.

99,99 €
Value for Money

02

Deutsche Telekom

Telekom Sinus Telephone Set

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22% Off
9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Standby time 245 hours/talk time 18.5 hours.
Phonebook can be synchronised among all Sinus 207 handsets
Large illuminated monochrome graphic display
Easy menu navigation
Blue Angel certificate: official environmental label of the German Environment Agency

76,62 € 98,03 €(22% Off off)
03

Gigaset

Gigaset Desk 800A Corded Telephone with Answering Machine - Three-Line LCD Display - 5-Way Navigation Button - Hands-Free Function - MFV or Pulse Selection Black [German Version]

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15% Off
9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Quality for every requirement – the latest technologies and the highest quality characterise the Gigaset phones – ideal for home or office – the DESK 800A can be used as a desk phone and as a wall phone
Flexible telephoning – The DESK 800A has a hands-free function with 7 volume levels – the RJ9 allows you to connect a headset – thanks to the EU standard (ITUT P,370), the device is hearing aid suitable
Easy installation – connect with analogue phone connection and start calling directly, supports MFV or pulse selection, with 10 adjustable melodies and the storage option of up to 200 contacts
Do you have any questions about this product? Contact Gigaset customer service at 02871-912 912 (for your provider's landline tariff)
Communicative - Three-line display with LED backlight, provides an overview of call time, name and number of the caller - the answering machine records up to 50 minutes of call time - the call list stores the 50 last entries. Only compatible in Germany - more information on the Gigaset homepage.
Box contents: 1 x DESK 800A desk telephone, 1 x telephone connection cable (a/b), 1 x power supply, 1 x user manual (English language not guaranteed), 1 x handset connection cable, 1 x stand

59,50 € 69,99 €(15% Off off)
04

Gigaset

Gigaset Desk 800A Corded Telephone with Answering Machine - Three-Line LCD Display - 5-Way Navigation Button - Hands-Free Function - MFV or Pulse Selection Black [German Version]

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10% Off
9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Quality for every requirement – the latest technologies and the highest quality characterise the Gigaset phones – ideal for home or office – the DESK 800A can be used as a desk phone and as a wall phone
Flexible telephoning – The DESK 800A has a hands-free function with 7 volume levels – the RJ9 allows you to connect a headset – thanks to the EU standard (ITUT P,370), the device is hearing aid suitable
Easy installation – connect with analogue phone connection and start calling directly, supports MFV or pulse selection, with 10 adjustable melodies and the storage option of up to 200 contacts
Do you have any questions about this product? Contact Gigaset customer service at 02871-912 912 (for your provider's landline tariff)
Communicative - Three-line display with LED backlight, provides an overview of call time, name and number of the caller - the answering machine records up to 50 minutes of call time - the call list stores the 50 last entries. Only compatible in Germany - more information on the Gigaset homepage.
Box contents: 1 x DESK 800A desk telephone, 1 x telephone connection cable (a/b), 1 x power supply, 1 x user manual (English language not guaranteed), 1 x handset connection cable, 1 x stand

62,97 € 69,99 €(10% Off off)
05

Gigaset

Gigaset AS690 - cordless phone - DECT phone with hands-free function, large display, large buttons - landline phone, black

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9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Strong functions: brilliant sound quality (even when hands-free calling), 5-level volume control, phone book for 100 contacts, call protection for 32 lock numbers, ergonomic keyboard
Quality made in Germany – designed and manufactured in Germany – the environmentally friendly Eco Dect technology ensures reduced energy consumption
Easy installation – simply connect the base station to the wall phone socket and start making calls directly – benefit from a quick and easy setup of your new phone. Handset, H x W x D in mm: 155 x 49 x 28
Do you have any questions about this product? Contact Gigaset customer service at 02871-912 912 (for your provider's landline tariff)
Box contents: 1 x base station Gigaset AS690, 1 x Gigaset AS690 handset, 1 x power supply, 1 x telephone connection cable, 2 x AAA batteries (NiMH), 1 x user manual (English language not guaranteed)
A reliable companion – the Gigaset AS690 impresses with a large, high-contrast display and ensures best readability thanks to the extra large number display in dial mode. Only compatible in Germany - more information on the Gigaset homepage.

38,20 €
06

Gigaset

Gigaset AS690 - cordless phone - DECT phone with hands-free function, large display, large buttons - landline phone, black

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Strong functions: brilliant sound quality (even when hands-free calling), 5-level volume control, phone book for 100 contacts, call protection for 32 lock numbers, ergonomic keyboard
Quality made in Germany – designed and manufactured in Germany – the environmentally friendly Eco Dect technology ensures reduced energy consumption
Easy installation – simply connect the base station to the wall phone socket and start making calls directly – benefit from a quick and easy setup of your new phone. Handset, H x W x D in mm: 155 x 49 x 28
Do you have any questions about this product? Contact Gigaset customer service at 02871-912 912 (for your provider's landline tariff)
Box contents: 1 x base station Gigaset AS690, 1 x Gigaset AS690 handset, 1 x power supply, 1 x telephone connection cable, 2 x AAA batteries (NiMH), 1 x user manual (English language not guaranteed)
A reliable companion – the Gigaset AS690 impresses with a large, high-contrast display and ensures best readability thanks to the extra large number display in dial mode. Only compatible in Germany - more information on the Gigaset homepage.

35,99 €
07

Gigaset

Gigaset Pure 120 Cordless Phone with Call Protection and ECO DECT Illuminated Display Hearing Aid Compatible Anthracite Black [Compatible in DE, IT, FR, NL, BE, Che, AUT]

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Strong functions: 5-level volume control, phone book for 50 contacts, call protection with call block button for 25 lock numbers, up to 14 hours talk time and 180 hours standby time
Reliable and versatile – the Gigaset Pure 120 impresses with an illuminated display – the menu navigation is available in up to 26 languages – internal conversations are possible when operating multiple handsets as well as triple conferences. Compatible in DE, IT, FR, NL, BE, CHE, AUT - More information on the Gigaset homepage.
Quality made in Germany – designed and manufactured in Germany – the environmentally friendly Eco Dect technology ensures reduced energy consumption
EASY INSTALLATION - Simply connect the phone to the power and telephone network - Benefit from a quick and easy setup of your new phone - Handset, H x W x D in mm: 154 x 49 x 25
Do you have any questions about this product? Contact Gigaset customer service at 02871-912 912 (for your provider's landline tariff)
Box contents: 1 x base station Gigaset Pure 120, 1 x Gigaset Pure 120 handset, 1 x power supply, 1 x telephone connection cable, 2 x AAA batteries (NiMH), 1 x battery cover, 1 x user manual (English language not guaranteed)

19,99 €
08

Gigaset

Gigaset AS690A - cordless phone with 1 handset - DECT phone with hands-free function, large display, large buttons - landline phone, black

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

gigaset From phones landline phone simple phone handsets with answering machine dect analogue phone easy operation home phone large display glossy phone black graphic display telephone wireless
Strong functions: integrated answering machine with up to 20 minutes recording time, brilliant sound quality (even when hands-free calling), 5-level volume control, call protection for 32 lock numbers
Quality made in Germany – designed and manufactured in Germany – the environmentally friendly Eco Dect technology ensures reduced energy consumption
Easy installation – simply connect the base station to the wall phone socket and start making calls directly – benefit from a quick and easy setup of your new phone
Do you have any questions about this product? Contact Gigaset customer service at 02871-912 912 (for your provider's landline tariff)
Box contents: 1 x base station Gigaset AS690A with integrated answering machine, 1 x Gigaset AS690 handset, 1 x power supply, 1 x telephone connection cable, 2 x AAA batteries (NiMH)
A reliable companion – the Gigaset AS690A impresses with a large, high-contrast display and ensures best readability thanks to the extra large number display in dial mode. Only compatible in Germany - more information on the Gigaset homepage.

47,99 €
09

Deutsche Telekom

Telekom Speedphone 12 Wireless Landline Phone For Use With Current Speed Ports, 5 cm Colour Display, High Voice Quality, Awarded The Blue Angel

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8.4

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

No cable connection to the speed port required - can be set up flexibly.
Initial installation wizard for easy set up.
High voice quality – rich, clear and natural sound during phone calls.
Ergonomic shape and intuitive key layout with multifunction button.
Clear 5 cm colour display with a simple user interface.

33,00 €
10

Deutsche Telekom

Telekom Speedphone 12 Wireless Landline Phone For Use With Current Speed Ports, 5 cm Colour Display, High Voice Quality, Awarded The Blue Angel

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8.2

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

No cable connection to the speed port required - can be set up flexibly.
Initial installation wizard for easy set up.
High voice quality – rich, clear and natural sound during phone calls.
Ergonomic shape and intuitive key layout with multifunction button.
Clear 5 cm colour display with a simple user interface.

33,00 €