Wiring Blocks

Developed to replace old-fashioned, screw-type telephone connections, 66 blocks and 110 blocks have become the industry standard for PBX and telephone systems as well as other low-voltage telephone equipment. They provide easy, reliable and accessible demarcation points between the phone company and the end user’s equipment. Used in equipment rooms, remote and intermediate wiring closets to connect voice or data wiring to equipment on the customer’s premises, these wiring blocks save everyone time, money and hassles while delivering proven performance.

No matter what type of telephone wiring block you are looking for, you can find it here. At Discount Low Voltage, we carry a big stock of wiring blocks and accessories, including 66 blocks, 110 blocks, prewired blocks and lightning-protected blocks. That means when you shop here on our online site, you can find exactly the type of equipment you need at exactly the right price to fit your budget.

If you are looking for 66 blocks, we offer a complete line of industry-standard and Category 5 modular 66 blocks, network interface blocks and interface blocks to help you get the job done right. These blocks are molded of flame-retardant thermoplastic for dependable service and durability. 
To save labor and installation time, take a look at our prewired 66 blocks. These have been pretested, making them fast and easy to install for many PBX, telephone systems and other low-voltage terminal equipment. We also carry UL-approved, lightning-protected 66 blocks if that is a requirement for your project.

Discount Low Voltage also offers 110 blocks if you are looking for a fast, easy and economical way to connect PBX, telephone and other low-voltage terminal equipment. These advanced punch blocks provide a high density of terminations, cutting those big jobs down to size. Choose from a variety of styles, including wall mount and rack mount, to adapt to any space or situation. These wiring blocks are made by leading manufacturers like Dynacom and Siemon, so you can shop with confidence backed by our guarantee of your total satisfaction. We also carry all the accessories you want for these punch blocks.


Many of these products are eligible for free shipping, saving you even more over our already discounted prices if your order meets basic requirements. We stand behind everything we sell with our guarantee of your total satisfaction, and we never tack on handling fees or other unexpected charges.


Check out the product pages for full specs on each of these items. Many pages also include short, informative videos that will give you a closer look at these products and what they can do.

If you can’t find what you’re looking for on these pages or have questions about a specific product or products, just call us toll-free or email us. We’ll provide fast, helpful answers and recommendations and help you find the right phone wiring block for your situation.