NEC Univerge SV9100, Особенности и характеристики

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988
Power Failure Transfer
Description
Power Failure Transfer ensures that a customer has access to the Central Office network during a power
outage. The CO/PBX tip and ring are automatically transferred to a DTL or ITL terminal multiline terminal
with a PSA-L adapter installed.
Refer to the UNIVERGE SV9100 System Hardware Manual for the MDF Pin Numbers and PFT
Connections (Power Failure Transfer Relay 1).
Conditions
The PSA-L is not supported on DTL-2E-1, DTL-6DE-1, ITL-2E-1 and ITL-6DE-1 terminals.
The single line telephones that are installed must provide dialing signal accepted by the
outside exchange (Dial Pulse or Dual Tone Multifrequency).
Multiline telephones with PSA-L adapter or single line telephones cross-connected at the
MDF can be used for this feature.
Single Line or PSA-L equipped multiline telephones and outside lines connected during
power failure are fixed one-to-one.
Single line telephones must be equipped with a ground start button for use with Ground
Start Trunks.
System features cannot be activated from single line telephone or multiline telephone with
PSA-L adapter when Power Failure Transfer is in operation.
When power is restored to the system one of the following happens depending on which
telephone (a single line telephone or multiline telephone with PSA-L adapter) is used:
Single Line Telephones
Power Failure Transfer is cancelled. Calls in progress on Power Failure Transfer lines are
disconnected.
Multiline Telephones with PSA-L Adapter
Calls in progress continue but the display does not show the date, time and system softkeys.
When the user hangs up, the phone automatically switches to Digital mode and the display
returns to normal.
The PSA-L adapter can be set to send DTMF or DP.
The PSA-L is supported on Loop Start Trunks only.
A Power Fail circuit is required. The GCD-4COTA has Power Failure circuits on the first two
ports.
The GPZ-4COTE daughter board does not have Power Fail or Fax Branch Exchange
circuits.
Default Settings
None