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Page 20 of 532
553-3001-367
Standard 1.00
Data
If the Asynchronous Data Option (ADO) is installed, an external power
supply is needed in addition to the power from the line (see Table ). A 110 V
AC 60 Hz, 100 V AC 50/60 Hz or a 220 V AC 50 Hz multi-output power
supply unit provides nominal voltages of +5 V, +12 V and -12 V DC. The
power supply connects to the back of the telephone through a 5-pin Molex
power connector.
Discrimination
If the AC power supply fails, data calls cannot be processed. All external
power supplies are equipped with short circuit and thermal shutdown
protection.
October 2003
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