Basics of Installing Intercom Systems

There are systems that garner more attention, but none offer homeowners the piece of mind and entertainment value of an intercom system.

To explain some of the latest technologies, installation techniques and uses of today's intercom solutions, CE Pro asked Gary Baker, vice president of marketing, Linear LLC, Communications Solutions, to elaborate on current intercom trends.

What is a home intercom system? How does it fit into the custom installation market?

Home intercom systems are a logical value-added product for any installer. Intercom systems yield high returns for installers, and they provide real value for new-home buyers.

In addition to providing distributed communications throughout the home, they can serve as an extension of a home's security system, providing communications with front door visitors or with a door-release feature.

A good intercom system provides monitoring throughout various parts of the home, and it serves as part of whole-house audio solution to distribute various music sources.

How has the technology evolved?

Early intercom systems were analog systems with low audio fidelity and limited styling options.

The newer systems are digital and include more features and style options.

Newer systems are also moving toward a structured wiring-based platform that can be integrated into higher level, whole-house music systems.

How are intercoms addressing home security and convenience needs?

Intercom systems provide both security and convenience with features like door stations, which offer audio communications, video and door release capabilities for the main entrance and also in-room monitoring throughout the house.

Other convenience features include paging, point-to-point call communications, room monitoring and whole-house music from any source.

Do the various intercom technologies require special installation techniques?

You can retrofit intercom systems into existing homes with some difficulty, but retrofitting is usually done with aftermarket wireless systems that are lower in fidelity.

Intercom systems are best for new construction, especially when you are planning to add structured wiring to the blueprint.

The better systems are designed to run over Cat 5 cable and many are moving toward structured wiring and installation techniques that use standard, double-gang boxes for each wall station.

Are there testing procedures that can help installers verify the results of their installs?

The beauty of using structured wiring for intercom systems is that it centralizes diagnostics and simplifies troubleshooting.

Most modern intercom systems come with built-in diagnostic tests.

What tips would you offer installers working with intercom systems?

Wiring using Cat 5 cable is less expensive and the cable is readily available.

Many installers like using a home-run cabling approach, where the room stations are wired directly to an intercom master controller.