Specifications

Music Interface
Input Level 3 Volts peak-to-peak maximum
Input Impedance Approximately 500 Ohms
Connector RCA phono jack
Station Message Detail Recording Port
Format Serial, pseudo RS-232C
Parity None
Data Bits 7 or 8 (programmable)
Stop Bits 1 or 2 (programmable)
Baud Rate Programmable in class of service
Handshaking X on -X off Hardware -CTS
Cable Length 500 feet maximum
PA Port
Output Level 400 Millivolts peak-to-peak (typical speech)
Output Impedance Approximately 500 Ohms
Connector RCA phono jack
Central Office Limits
Loop Limits 1900 Ohms maximum loop
Cable Insulation Leakage 15,000 Ohms minimum
Industry/Regulatory Standards
FCC Certified, part 15 (Class A)
FCC Registered (fully protected)
LISTED by OSHA-accredited, nationally recognized, test laboratory
EIA RS478
Bell publication 48002 guidance
Hearing aid compatible handset
Memory Retention After Power Loss 60 hours minimum
Ringer Equivalence Number 1.3B
IMI66–107 Digital Telephone System
Introducing The DSU 1 – 21