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TIA568 Wiring Standards

How to decide which wiring pattern to use:

1. Does the job specification call out a wiring pattern?
2. Does the customer/end user have a preference for T568A or T568B?
3. Have patch panels already been purchased for the job? If so, they will probably be either T568A or T568B. The jacks should be wired to the same pattern as the panels.
4. Are you adding on to an existing wiring plant? If so, your new wiring should match the existing wiring.

If none of the factors above apply, either T568A or T568B may be used. It is important to ensure that the workstation connectors and the patch panels are wired to the same pattern. T568B is commonly used in commercial installations, while T568A is prevalent in residential installations.

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For a more complete selection of products (no online ordering available at that site), visit the original Lashen Electronics website located at http://www.lashen.com.
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SI-35A Expandable To 75 Station Intercom Control Center


SI-35A Expandable To 75 Station Intercom Control Center

Bogen SI-35A High-Power Intercom Control Center Expandable To 75 Station

Specifications & Manual

SI-35A - SI Series Control Center, 35-Watts Program, 8-Watts Intercom, 25 Stations, Expandable to 75 Stations

Features:

  • Communication with up to 75 speaker-equipped stations
  • Instant emergency/all-call paging
  • Separate 35-watt program and 20-watt intercom channels
  • Tone calling; light identifies calling remote
  • Time signal, night bell, or telephone paging capabilities
  • Color-coded controls for easy operation
  • Executive styling
NOTE: Connectors Sold Separately
See Below

The SI-35A is a handsome, dual-channel Intercom and Program distribution system designed to serve the intercom and program distribution needs of schools, businesses and institutions.

The SI-35A serves up to 75 rooms or remote locations and provides custom flexibility in a space saving design. Furnished with 25 room selector switches, it has space available for 75, or for a Bogen CR-100 cassette player/tuner and 50 room switches.

In addition to its intercom function, the SI-35A can distribute program material from a variety of sources, such as microphone, tape or tuner, and can distribute tone signals and emergency announcements.

Each unit includes a built-in 20-watt intercom amplifier and separate 35-watt program amplifier. These permit instant communication with any location without interrupting the distribution of program to others.

The control panel features color-coded buttons and guides, with step-by-step instructions, allowing even first time users to operate the system easily. Emergency announcements to all locations are accomplished with a single push button and take precedence over all other system functions. Facilities are included for all-call distribution of a tone signal (for classroom changes or telephone night bell) and telephone paging.

Remote stations may be wall-mounted or ceiling-mounted loudspeakers, or horn-type speakers in high-noise or outdoor locations that enable hands-free reply when called. A call-in switch can be provided at any remote station where call initiation capability is desired.

When the control panel selects a remote for intercommunication or monitoring, the remote receives a repeating tone signal. Calls to the control center are announced by tone signal and identified by light annunciation.

The control center provides a 25-volt balanced line output to drive a distributed speaker system. Recommended wiring is 3-conductor, shielded, 18, 20 or 22 AWG. Room connection is made easy using crimp-on connectors (purchased separately).

The control center is constructed of sturdy material and is finished in an attractive simulated walnut.


Price: $1,453.30 


Quantity:  

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