Tadiran Telecom EMERALD ICE, Быстрое руководство по установке, Страница: 19 / 138

Emerald ICE Quick Installation Guide
Page 2-5
The 610+2 is the large circuit board that is packaged inside of KSU1. The 610+2 provides inter-
face for up to 6 loop-start CO Lines, 10 Digital Extension Ports and 2 analog ports. Additionally the
610+2 regulates the 24 volt DC power from the source to produce all required logic voltages and
operations voltages. There is also a Power Failure Port located on the 610+2 that is connected to
the first CO Line circuit. Whenever power fails this port becomes active with dial tone from the CO
line connected to the first CO line port.
Each CO line circuit on the 610+2 board incorporates over-voltage protection, ring detector, loop
detector, loop/pulse-dial relay, current sink circuit, coupling/isolation transformer (impedance
600:600), hybrid circuit, CODEC & filter, polarity guard circuit and Radio Frequency noise filter.
The sixth CO Line port is equipped with CNG Fax Tone Detection circuitry. If FAX tone is detected,
the call is routed to the analog port designated as the destination for fax calls.
Each digital port (connects to Deluxe & Standard Telephones and DSS Consoles) is comprised of
a proprietary octal ASIC (Application Specific Integrated Circuit) transceiver. There are three data
channels in operation at each digital port via the octal transceiver. One channel is used for call pro-
cessing control of digital terminal functions/operations and two channels are used for the digital
voice channel requirements.
Each digital station interface is protected against circuit wiring shorts by an over-current protection
Polyswitch. The digital station circuit requires only one cable pair to operate and is not polarity
sensitive.
Physical connection of digital extensions, power failure telephones and CO lines to the 610+2
board is made through a 25 pair amphenol connector to be terminated on the MDF. (Main Distribu-
tion Frame)
610+2 (KSU1 Component)