Tadiran Telecom EMERALD ICE, Quick Installation Manual, Page: 23 / 138

Emerald ICE Quick Installation Guide
Page 2-9
The 6CO Board is installed in the dedicated position of the 610+2 Board/Base Board. The 6CO
interfaces 6 loopstart CO (Central Office [Telephone Company]) lines. One 6CO Board is installed
in KSU1. An additional 6CO Board can be added for a total of 12 loopstart CO lines. Two 6CO
Boards may be installed in KSU2. Therefore, the
Emerald ICE system CO line capacity may be
expanded to interface 24 total loopstart CO lines.
The 6CO module is shipped with four (4) mounting stand-offs used to install the board into the
KSU1 or KSU2.
Each CO line circuit 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. When programmed as
a “FAX” line, this circuit will automatically engage the FAX Tone detector. If FAX tone is detected,
the call is routed to the analog port designated as the destination for fax calls.
6CO Board (Central Office Module - 6 Circuits)