Tag Archives: electronic engineering

Your office cabling system is costly and complicated investment. It's also a commitment to an office design and structure that is not easy to modify. If you add more workstations later, new cabling might be needed.

Most offices have a structured cabling topology that hardwires the cables from wallplate to patch panel. With this system, modifications are less likely because the initial installaiont includes a planning process that should anticipate some expansion. By pre-wiring potential locations in an existing or newly-constructed building, future moves, additions or alterations are avoided. You can just transfer patched cables in the wiring closet. Also, it is critical to number the wallplates to match the corresponding patch panel number. This will make it much easier to relocate a workstation or to troubleshoot a connectivity problem.

There are several sub-systems to consider:

• The Demark refers to the point where the Internet Service Provider's (ISP) data line comes to an end and hooks up with the cabling in the building.


• The equipment room serves as storage for all apparatus and wiring integration points.


• Backbone cabling are high-speed cables (typically Cat6 or fiber) that connect various floors or wall closets.


• The horizontal cabling for links up the network space to individual wallplates. These are done through conduits and ceiling spaces on every level.


• The telecommunications enclosures are wall or floor mounted cages that hold the network equipment; primarily the patch panels ands switches but also sometimes the server and Uninterruptible Power Supplies (UPS) too.

Installation and design of structured cabling is regulated by standards that identify the following:

• Network data switches


• Offices layout for voice & data communications for Cat5e or Cat6 cable


• Fiber Optic cables for backbones


• Modular connectors at the wallplate

These components will guide the layout of cables in order to fulfill the data access requirements of your office. All of the cables start at the patch panel on a mounted rack (about 19 inches wide) in the wall closet. From there, they traverse through the drop ceiling and down the walls to individual wallplates. Quite often a wallplate will host 2 or more connections. At the wallplate a short patch cable, usually 7 to 14 feet in length wil connect the computer, phone, printer or other networked device.

All cabling standards require that all of the eight conductors in Cat5, Cat5e and Cat6 cables are inter-connected in a precise color-coded pattern. The network cable connects each device but some devices can share a single cable. This is true for VoIP phones. Most VoIP phones have a jack for the network cable and then a jack on the phone for connecting the computer. This pass-thru enables the two devices to share one connection.

The structured cabling system is a comprehensive structure of wiring and the related hardware involved. This system ensures a complete and reliable telecommunications infrastructure. This network has several  but mostly for providing telephone services or conveyance of data over a  computer network. This type of cabling system also connects to the internet at the demarcation point.

A quality structured cabling installation has these common elements:

• It must fir the architectural configuration of the building that hosts  cabling installation


• It made up of cable and connection fixtures


• It connects equipment that cabling is setup to support


• Can be designed to enable retrofitting and upgrading


• Meets the objectives and requirements of the business


• Is backed by a guarantee by the manufacturer and the installer

As installers, we use standardized techniques in the completion and upkeep of cabling systems. This is important to guarantee satisfactory system performance on a technically complicated infrastructure. The benefits of adhering to these standards are that they insure stability of connectivity after setup.

 Structured cabling installations may include:

• Entrance facilities


• Perpendicular and horizontal backbone conduits or cables


• Horizontal lanes


• Work area facilities


• Equipment areas


• Telecommunications racks and cabinets

A cabling connector refers to the mechanical device used in connecting a cable to a device or from one cable to another. The connector provides the coupling device that can minimize losses.  For fiber, it permits light signals to move from one connector to another. On the other hand, copper enables electrical impulses to be conveyed. It is important to properly align these  connectors to prevent connectivity breaks. Likewise, it should insure the efficient transmission of data. Connectors are crucial to the reliability of the total telecommunications network.

There are six subsystems in the structured platform. These are entrance facilities, equipment rooms, backbone cabling, telecommunication rooms and enclosures, the cabling, and the work area.  The first consists of cables, network boundary, hardware for connection, security devices, and equipment attached to the network cabling. Backbone cabling consists of subsystems that provide inter-connection between telecommunication, network equipment and access facilities.  Quite often these are the higher speed cabling components such as Cat6 and fiber that connect among the switches of an office.

Horizontal cabling connects from the desktops and phones to the telecommunications rooms and enclosures. The maximum horizontal cable length should be at no more than 100 meters. These desktop components extend out from the wall plate connection end of the horizontal cabling system to the equipment in the wall closet.

Call us if you need troubleshooting or if you have a need for cabling at your office due to expansion or relocation of your firm. We do free on-site surveys and quotes.