
Station Cable Requirements
Type: #24 AWG minimum, 2-wire (1-pair) twisted, non-shielded
Maximum Length: With 20 AWG With 22 AWG With 24 AWG
Digital Telephone 2500 feet 2000 feet 1500 feet
IST Telephone 4000 feet 3500 feet 3000 feet
Impact SCS large-screen
display speakerphones:
Model 8412F: 1500 feet 1000 feet
Model 8412S: 1500 feet
Switching Principle
Digital, pulse code modulated/time division multiplexed (PCM-TDM) that provides non-blocking
switching with stored program control.
Terminations
Station and Line Boards: Standard 50-pin male connectors for connection to external distribution field.
Regulatory and Industry Standards
FCC Part 15 Class A RF emission compliant
FCC Part 68 registered
FCC Registration numbers:
Key system CVWUSA–24456–KF–E
Hybrid system CVWUSA–24464–MF–E
Industry Canada (IC) certified:
Certification number: 584 8025 A
Safety approved: OSHA accredited NRTL (Nationally Recognized Test
Laboratory) to UL1950 and CSA C22.2 number 950.
Telephone interface connection: For information regarding REN, FIC, USOC, and connector types for
interface to the telephone company, see section of manual titled, Federal Communications Commission
(FCC) and Industry Canada (IC) Rules and Regulations.
Ringer Equivalence Number: 0.4B
Knowing The Specifications 5 – 5
General Description GCA40–215
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