Best Festnetztelefone Voip Zubehör 2026

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Last Updated - 03.02.2026

Best Choice

01

POENVFPO

POENVFPO VoIP 2 Ports Adapter SIP Internet Phone Portable Device for Long Distance Calls or Global Calls, Unlocked for Broadband, Router, Ordinary Telephone/Office Use (EU Plug)

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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

[Versatile Compatibility] Works seamlessly with an ordinary phone for communication.
[Included accessories] Features power adapter, user manual and cable for quick setup.
[Easy Installation] Connect to your router and phone for instant voice over IP calls with SIP V2 support.
[Cost-effective calling] Save on long distance and international calls on this VoIP Internet phone adapter.
[Convenient Use] Lightweight and portable design allows easy use at home or on the go.

41,02 €
02

Tbest

Business Office, Home Use, Landline Landline Telephone, Desk Phone with Caller Identification, Corded Phones, House Call and Accessories

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9.5

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

Flash time 90/95/100/120/180/300/600/1000ms software optional.
Date and week display in real time, LCD brightness level 5 adjustable.
Call number and time recording 50 groups (8 digits) or 32 groups (16 digits).
Call number 14 groups (8 digits) or 8 groups (16 digits) and call time recording.
1~99 hours do not interfere.
16 ordinary ringtones available.

20,15 €
Value for Money

03

Ridwiwa

Pack of 2 Telephone Cable Detangler 360 Degree for Landline Phones - Rotating RJ9 4P4C Anti-Tangle Adapter for Desk & Office Devices - High Quality Telephone Handset Cable Accessories for Clear

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9.2

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

Suitable for office & home office landline phones: the detanglers are compatible with standard RJ9 devices, such as standard desk landline phones. Especially suitable for frequent callers, call centres, secretariats and home office workplaces. Not suitable for VOIP phones or RJ45 connectors, but ideal for classic wired systems.
Practical phone accessories in a double pack: you will receive two rotating telephone cables detangling 360, which are used as an anti-tangle adapter between the handset and the telephone line. These practical helpers effectively prevent cable knots and ensure that your phone cable stays clean and usable for longer - ideal for landline devices in the office or home.
Plug and play installation in seconds: Simply plug the adapter between the RJ9 handset and the phone jack – no tools required. Its automatic swivel starts to work immediately and relieves the strain on the first use. A fast, user-friendly solution for anyone who prefers a secure and interference-free telephone cable.
Compact size & durable materials: each adapter measures approx. 7 cm and is made of durable ABS plastic with 4P4C gold-plated RJ9 interface. The high-quality interior made of copper strands ensures a stable connection. This optimally complements your existing telephone handset cable and its service life is extended by less strain.
360° rotating mechanism for trouble-free use: the integrated rotating body reliably prevents the cable from twisting and allows free movement during the telephone cable, always flexible 360 degrees, reduces strain and prevents damage - especially useful for long calls or frequent calls in everyday work.

7,29 €
04

Histeaa

Histeaa Telephone Cable Detangler, 2 Pack Black Coiled Telephone Handset Cable (Black Coiled) / 1.1 Ft Wound, 2 Pack Telephone Cable Detangler Landline Phone Accessories

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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

Universally compatible wound handset cable for all phone manufacturers, including AT&T, , , Rolm, ITT and Tie. You can use them as for these and 5420 and 5610SW IP phones
The telephone cable is suitable for remote communication with your desk phone or office phone. The extended coiled cable is included for work in the office or at home
The cable detangler works on RJ11 models of handset cables and handsets. Applies to Family Fixed Telephone. The item model is RJ11 plug.
For use between handset and phone, not from phone to socket
Automatically rotates 360 degrees to prevent the coiled phone cable from twisting and tangling with the phone line detangler. Includes gold-plated metal contacts for excellent sound quality. Simply connect one end to your handset and the other end to the cable, and you're ready to go! Removing the detangler is just as easy

7,21 €
05

DragonTrading

4 PCS Rotatable Telephone Phone Cord Detangler Landline Telephone Accessory (Clear & White) DragonTrading®

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8.8

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

Suitable for family fixed phone works on RJ11 models of mobile phone binding cords and mobile phones. The product is for family landline, and model is RJ11 plug. Note: does not apply to VoIP phone, does not fit RJ45 modular plugs.
PREVENT FRUSTRATION - Prevents your phone coiled cord from twisting and Rapunzel
International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.
Gold-plated metal contacts prevent loss of sound quality.

17,99 €
06

Aexit

Aexit 2 pieces plastic electronics and photo electronic project case junction box 50 x 35 x landline phones, VOIP & accessories 23 mm black

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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

Net Weight : 25g;Package Content : 2 x Junction Box
Mounting hole diameter: 3 mm/0.12 inches.
Main Color : Black;Total Size : 50 x 35 x 23mm/ 2" x 1.4" x 0.9" (L*W*T)
Country of manufacture: China. Material: plastic.
Cable hole size: 4 x 4 mm/0.16 inches x 0.16 inches (L x W).

9,91 €
07

Wicked Chili

Wicked Chili 2 x Batteries for AVM Fritz!Fon M3, Replacement Battery with +20% Capacity, Replacement Battery for Fritzfon VOIP Telephone, Accessories for Original Fritz Fon Battery BT239865 Mod

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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

Safe: with short circuit, overheating and over-voltage protection. The brand cell of the battery reliably supplies power to your AVM Fritz-Fon M3 wireless landline telephone. Accessories in economy set
Powerful M3 battery: replacement battery with increased 1200 mAh capacity (+20% more than the battery included in the box contents). For the FRITZ!Fon M3 DECT VOIP phone from AVM. Warning: not suitable for M T F series or C series
Perfect fit: High quality rechargeable Li-ion battery with a capacity of 1200 mAh and 4.44 Wh. The battery reaches full capacity after 3 full charge and discharge cycles
M3 replacement battery: the replacement battery for constant charging and extra long standby of the Fritz Fon M3. With modern lithium technology without memory effect. Replaces the original battery BT239865 Model No: 523450AR1000
Box contents: pack of 2 Wicked Chili replacement batteries suitable for FRITZ!Fon M3, high capacity: 1.2 Ah, voltage: 3.7 V, 4.44 watt hours, cell type: lithium-ion, extended battery

17,95 €
08

Aexit

Aexit 20 pcs..3 Electronics & Photo Pin PCB Mounting 3.5x1.3 mm Female DC Mains Plug Landline Phones, VOIP & Accessories Socket DC-002

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8.1

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

Size (not with pin): 11 x 7.6 x 5 mm / 0.3 x 0.3 x 0.20 inches (L x W x H).
Package contents: 20 x DC socket.
Material: Plastic, Metal;Net Weight: 12g
Main Color : Silver Tone, Black;Hole Diameter : 6.3mm
Country of manufacture: China; type: 3.5 mm x 1.3 mm socket.

10,93 €
09

Aexit

Aexit 20 pieces electronic and photo tablet PC 2.5 mm x 0.7 mm DC landline phones, VOIP & accessories power charging connector

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7.8

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

Package Content: 20 x DC Sockets
Net Weight : 14g;Size : 12mm x 6mm x 5mm (L*W*H)
Material : Plastic, Metal;Type : 2.5mm x 0.7mm Socket
Main Color: Black, Silver Tone
Country of Manufacture: CHINA; Terminal: 5 Terminals

11,61 €
10

Aexit

Aexit 46 x 36 x 18 mm Landline Telephones, VOIP & Accessories, Waterproof Plastic Casing, DIY Phone Accessories, Junction Box, Pack of 5

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7.6

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

Total size: 46 x 36 x 18 mm / 1.8 x 1.4 x 0.7 inches (D)
Product Name: Junction Box
Net weight: 55g; Package Content: 5 x Junction Box
Main colour: beige
Country of Manufacture: China; Material: Plastic

12,13 €