H80AATRB is a 32-channel foreign exchange office (FXO) service board, providing direct access services.

Benefits

Overcurrent protection

Lower power consumption

Configurable port impedance

External Interfaces

32 FXO ports

Physical	Specification
Connector	Telco 64-pin
Environment
Automatic shutdown at high temperature	Supported
Operating temperature	-40°C to +65°C
Power consumption	• Static: 4 W • Maximum: 4 W

Functions

Category	Specification
G.711A/U	32
CID	Supported
Pulse dialing	Supported
EMC complying with Class A	Supported
DTMF dialing	Supported
ITU K.20；K.45	Supported
Hookflash function	Supported
Temperature query and high-temperature alarm	Supported
Ringing detection	Supported
Polarity reversal detection	Supported

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