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A telephone cable can be used for all kinds of communication purposes. They're found in telecommunication applications such as audio and TV equipment as well as in computer and phone networks. Fibre optic cables are a more advanced version of telephone cables.

### What type of cable do I need?

The type of telephone cable you choose will depend on the specific task it is needed for. For example, in high-tech audio equipment, it is necessary to prevent sound interference. 

The telephone cable will therefore need an extra conductive layer to ensure inference doesn't reach the cable itself.

Whether the cable is to be used inside/outside or as a telephone extension will also determine the type of cable that needs to be used. There are a range of telephone cables available including those that have been manufactured to British Telecom (BT approved) and European standards. You can find more information in our [telephone cable guide](/web/content/discovery/ideas-and-advice/telephone-cable-guide).

- [PVC telephone cable:](https://uk.rs-online.com/web/c/cables-wires/networking-coaxial-cables/telephone-cable/?applied-dimensions=4294885500) PVC outer sheath provides great dielectrics strength, meaning that PVC phone cords can sustain a high electric field before their insulating properties diminish, making them durable in extreme temperatures.
- [Copper telephone cable](https://uk.rs-online.com/web/c/cables-wires/networking-coaxial-cables/telephone-cable/?applied-dimensions=4294879939): offer the benefit of reliability. These highly secure phone cords provide consistent performance.
- [Black telephone cable](https://uk.rs-online.com/web/c/cables-wires/networking-coaxial-cables/telephone-cable/?applied-dimensions=4294878003): encased in black outer insulation or jacket, these are distinguishable from other types of cables such as Ethernet cables, which come in blue, yellow or grey. They are used to connect landline telephones to outlets in offices, homes or otherwise.
- [Telephone extension cable:](https://uk.rs-online.com/web/c/cables-wires/networking-coaxial-cables/telephone-cable/?applied-dimensions=4291386452) also known as phone extension cords, these are used to extend the reach of a telephone line to a greater distance from the original telephone jack or wall socket. These can be suitable for indoor or outdoor usage, depending on material.
- [Flame Retardant telephone cable:](https://uk.rs-online.com/web/c/cables-wires/networking-coaxial-cables/telephone-cable/?applied-dimensions=4293559984) provide extra protection against the spread of fire, ensuring improved safety within the home or the workplace.

RS offers a broad range of popular brands such as [Decelect](https://uk.rs-online.com/web/c/cables-wires/networking-coaxial-cables/telephone-cable/?applied-dimensions=4294966597), Roline, [Lapp](https://uk.rs-online.com/web/c/cables-wires/networking-coaxial-cables/telephone-cable/?applied-dimensions=4294965787), RND, CAE Groupe and our very own [RS Pro](https://uk.rs-online.com/web/c/cables-wires/networking-coaxial-cables/telephone-cable/?applied-dimensions=4291471876). We also provide an array of value-adding solutions, such as in-store collection where available, fast & free delivery and eco-friendly options like Better World products.



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Telephone Cable | Telephone Extension Cable | RS

Telephone Cable

Decelect 6 Core 30 AWG Telephone Cable 50m

Decelect 2 Core Telephone Cable Blue/Red Sheath, 100m

Decelect 2 Core Telephone Cable White/Yellow Sheath, 100m

Decelect 2 Core Telephone Cable Red/White Sheath, 100m

Decelect 2 Core Telephone Cable Black/White Sheath, 100m

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Decelect Forgos Telephone Cable|Telephone Cable| RS

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Telephone Extension Cable|Telephone Cable| RS

Telephone extension cable, also known as phone extension cords or telephone line extensions, are used to extend the reach of a telephone line to a greater distance from the original telephone jack or wall socket. These cables allow you to place your telephone or other telecommunication devices (fax machines, modems, etc.) farther away from the primary telephone socket.It's important to note that, like any cable, the quality of the telephone extension cable can impact signal quality and overall performance. Cheaper or poorly shielded cables may be more prone to interference and signal degradation. Therefore, it's recommended to use high-quality cables, especially for critical applications like DSL internet connections or in areas where signal quality is essential.&nbsp;Here are some key points about telephone extension cables:<ol><li>Length and Configuration: Telephone extension cables come in various lengths, typically ranging from a few feet to several meters or yards.</li><li>Connectors: The ends of telephone extension cables are equipped with connectors compatible with standard telephone jacks. Common connectors include RJ11 connectors, which are widely used for both telephone and DSL connections.</li><li>Extension and Relocation: These cables are handy when you need to extend the reach of your telephone or other telecommunication devices.</li><li>Versatile Use: Telephone extension cables can be used for various applications beyond extending phone lines. They are often used with fax machines, answering machines, modems, and other devices that require a telephone connection.</li><li>Compatibility: It's important to ensure that the extension cable is compatible with your specific telecommunication device and the type of service you have.</li><li>Signal Quality: When using telephone extension cables, it's essential to consider signal quality. Longer cable lengths and poor-quality cables can lead to signal loss or interference, which may affect voice quality or data transmission speed.</li><li>Installation: Installing a telephone extension cable is straightforward. You simply plug one end of the cable into your primary telephone jack or wall socket and the other end into your phone or device.</li><li>Indoor and Outdoor Use: Some telephone extension cables are suitable for outdoor use, allowing you to extend phone lines to areas like gardens or garages.</li></ol>

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Black Telephone Cable|Telephone Cable| RS

A black telephone cable is a type of cable used for telephone connections. These cables typically consist of one or more twisted pairs of copper wires encased in a black outer insulation or jacket. The black colour of the jacket helps distinguish it from other types of cables used for various purposes, such as Ethernet cables, which often come in different colours like blue, yellow, or grey.Black telephone cables are used to connect landline telephones to telephone jacks or outlets in homes, offices, or other buildings. They transmit analogue signals that carry voice communication, allowing people to make and receive phone calls. While many modern telecommunications systems have shifted to digital technology and wireless communication, traditional black telephone cables are still in use in some areas, particularly for landline connections and legacy phone systems.

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