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1.7 Useful Features
Operations 1-89
Advanced Operations
Power Failure Transfer
Lockout
If one party in a conversation goes on-hook, both parties will be disconnected from the speech
path automatically. A reorder tone is sent to the off-hook party before it is disconnected. No
operation is necessary.
During a power failure, each outside (CO) line will be connected to an assigned extension.
Outside (CO) line 1: extension jack 01
Outside (CO) line 4: extension jack 09
• During a power failure, all features cannot be used except for incoming and outgoing
outside calls from extension jacks 01 and 09.
• If extension jacks 01 and 09 are connected to proprietary telephones, disconnect the units
and connect single line telephones.
• Automobile type batteries, which are customer supplied, are available as a system back up
power supply to operate all the features during a power failure.
• The batteries can be connected directly to the unit. For more information, refer to the
Installation Manual.
• See the Installation Manual, Section 3, “Power Failure Transfer”.
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