Telephone Extension Cables

Telephone extension cable is a flexible extension lead used to communicate data from a phone or modem to a BT plug. Their extension length allows them to extend the capabilities of the current cable. Copper wires within the extension cable are used to transmit low voltage, high frequency electrical loads across long distances.

Fibre optic cables can also be considered a type of telecommunications cable and are at the cutting edge of communications as they have been designed to handle very high bandwidths.

What are telephone extension cables used for?

Telephone extension cables are used as a way of achieving long-distance communication. This includes telephones, television and computer communications.

Telephone extension cables differ mostly because of their cable connections. BT telephone sockets were introduced into people’s homes so they could have access to a telephone and broadband. There are two types of BT plug connectors, 431A which is 4-way and 631A which is 6-way.

The connector on the telephone is not standard but is typically a RJ11, 6P4C or 6P2C modular connector. In order to use broadband a DSL filter is necessary allowing low frequency noise to not be affected by high frequency data. The RJ11 and ADSL plugs can both connect to the DSL filter by using the sockets provided.

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Description Price Connector A Connector B Length Sheath Colour Shield Type Outer Sheath Material IP Rating Series Voltage Rating
RS Stock No. 303-1287
BrandRS PRO
PHP351.87
Each
units
RJ11 RJ11 3m White - - - - -
RS Stock No. 182-4560
BrandRS PRO
PHP341.62
Each
units
Male RJ9(4/4) Male RJ9(4/4) 5m White - - - - -
RS Stock No. 303-1271
BrandRS PRO
PHP171.20
Each
units
Male RJ11 Male BT431A 3m White - - - - -
RS Stock No. 182-4532
BrandRS PRO
PHP305.38
Each
units
Male RJ9(4/4) Male RJ9(4/4) - Cream - - - - -
RS Stock No. 446-686
BrandRS PRO
PHP543.95
Each
units
Male RJ45 Male RJ45 3m Grey - PVC - - -
RS Stock No. 446-664
BrandRS PRO
PHP256.80
Each
units
Male RJ12 Male RJ12 3m Grey - PVC - - -
RS Stock No. 446-670
BrandRS PRO
PHP347.85
Each
units
Male MMJ Male MMJ 3m Grey - PVC - - -
RS Stock No. 446-658
BrandRS PRO
PHP351.74
Each
units
RJ9 RJ9 3m Grey - PVC - - -
RS Stock No. 409-1280
Mfr. Part No.SPE190853
BrandLegris
PHP1,835.75
Each
units
Male BCS Male BCS 2m Grey Unshielded Twisted Pair (UTP) - - - -
RS Stock No. 666-0005
Mfr. Part No.565-003-724-900
BrandEDAC
PHP717.03
Each
units
3 Way Female Wire to Wire - 1m Black - - - - -
RS Stock No. 334-5918
Mfr. Part No.SPE164912
PHP633.45
Each
units
Male RJ11 - 3m Black - - - - -
RS Stock No. 181-2578
Mfr. Part No.VDIR542110
PHP545.51
Each
units
- - 48mm - - - IP54 Zelio Count 40 V dc
RS Stock No. 666-7555
Mfr. Part No.520-210-002-ASSYRS
BrandEDAC
PHP335.40
Each (In a Bag of 2)
units
2 Way Male Wire to Board Free End 1m White - - - - -
RS Stock No. 666-7564
Mfr. Part No.520210003ASSY
BrandEDAC
PHP428.005
Each (In a Bag of 2)
units
3 Way Male Wire to Board Free End 1m White - - - - -
RS Stock No. 666-0018
Mfr. Part No.565-005-724-900
BrandEDAC
PHP609.32
Each
units
5 Way Female Wire to Wire - 1m Black - - - - -
RS Stock No. 189-7778
Mfr. Part No.DS1402D-DR8+
PHP1,473.17
Each
units
Male RJ11 1-Wire 2.4m Black - PVC - - -
RS Stock No. 666-0009
Mfr. Part No.565-005-714-900
BrandEDAC
PHP1,091.80
Each
units
5 Way Male Wire to Wire - 1m Black - - - - -
RS Stock No. 2509146593
Mfr. Part No.9562 060500
BrandBelden
PHP15,111.84
1 Reel of 152 Metre(s)
Reel(s)
- - - - - - - - -
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