True Decor Black RJ11 Plug Telephone Extension Cord, 25-Foot

Last updated date: August 2, 2021

DWYM Score

9.6

True Decor Black RJ11 Plug Telephone Extension Cord, 25-Foot

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We looked at the top Telephone Extension Cords and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Telephone Extension Cord you should buy.

Update as August 2, 2021:
Checkout The Best Telephone Extension Cord for a detailed review of all the top telephone extension cords.

Overall Take

This telephone extension cord is made from high-quality materials that are able to withstand harsh weather conditions. Users will find that cord is widely compatible and easy to install. It can be used with modems and fax machines, in addition to home landline telephones.


In our analysis, the True Decor True Decor Black RJ11 Plug Telephone Extension Cord, 25-Foot placed 2nd when we looked at the top 12 products in the category. For the full ranking, see below.

From The Manufacturer

High Quality phone line cord extension allows for placement of your telephone up to 25 ft. from the telephone wall jack. Designed For Connecting Phone, Modem Or Fax Machine To Wall Jack. Made from high quality material to last in rough weather conditions.

Expert Reviews

User Summarized Score

9.2
1,261 user reviews

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An Overview On Telephone Extension Cords

Smartphones might be an ever-present weight in our pockets, but landline phones are still a fixture at the office and even in many homes. And just like any piece of technology these days, these phones are increasingly connected to other devices — and that means extra connection cords.

Just because it’s called a landline phone doesn’t mean it needs to be landlocked to the wall that has the phone jack. A good telephone extension cord can give you greater freedom to move your desk or attach that phone to modems, fax machines or other office essentials.

One good thing about landline phones: The accessories and connection cord standards for them have remained much the same for decades, while charging cables and operating systems for smartphones seem to go obsolete every five years or so. If you need an extension cable for any standard telephone, look for the flat cord and squarish connections of an RJ-11 or RJ-12 cable.

Of the two, RJ-11 is the most common, and the oldest. They can be used to connect your telephone to a phone jack in the wall, or that phone to a modem or fax.

RJ-12 cords look the same on the surface, but check the ends and you’ll see six metal contacts occupying each of the six connection points. RJ-11 cords, by contrast, have four contacts. The extra contacts in the RJ-12 cords allow for additional phone lines, so they can be used by keyed telephone systems or office-wide PBX (Public Branch Exchange) phone systems. They’ll still work in older RJ-11 slots, but RJ-11 cords will not work in phones jack designated for use with RJ-12. This type is far less common, so if you’re buying for a home phone or simple office landline, RJ-11 cords should be all you need.

The Telephone Extension Cord Buying Guide

It should be easy to tell them apart, but don’t buy handset cord when you need an extension cord for your phone line. If you’re buying online, check the RJ (Registered Jack) number. Phone line that runs from your telephone to a phone jack or modem will be RJ-11 (or less commonly, RJ-12). Handset cord is the cord that connects your handset to the actual phone base, and that will be rated RJ-9 or 22. It will also be coiled in that telltale spiral, making it easy to spot in hardware store aisles.