Intelligent Accessä Voice Solutions
Am79231
Intelligent Subscriber Line Interface Circuit (ISLIC™)
DISTINCTIVE CHARACTERISTICS
Monitor of two-wire interface
voltages and currents supports — Voice transmission — Programmable DC feed characteristics — Independent of battery — Current limited — Selectable off-hook and ground-key thresholds — Subscriber line diagnostics — Leakage resistance — Loop resistance — Line capacitance — Bell capacitance — Foreign
voltage sensing — Power cross and fault detection
+5 V and battery supplies Dual battery operation for system power saving — Automatic battery switching — Intelligent thermal management Compatible with inexpensive protectio...