Description
The Mitel MH88634 Central Office Trunk Interface circuit provides a complete audio and signalling link between audio switching equipment and a central office.

FEATUREs
• Loop Start Trunk Interface
• 600 ohm input impedance, -2 variant
• Line state detection outputs: forward loop, reverse loop, ringing voltage, switch hook On-hook reception
• Transformerless 2W to 4W conversion
• One loop start relay driver
• +/- 5V operation
• Small footprint area (<4.75cm²)

Applications
Interface to Central Office for:
• PABX
• Key Telephone Systems
• Channel Bank
• Voice Mail
• Terminal Equipment
• Digital Loop Carrier
• Optical Multiplexer