Aastra OpenCom 510 User Guide - Page 39
Uninterruptible Power Supply, 4.7 Power Failure
View all Aastra OpenCom 510 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 39 highlights
Installation Uninterruptible Power Supply 4.6 Uninterruptible Power Supply If you are using uninterruptible power supplies (UPS) they must be earthed separately. The total leakage current must not exceed 3.5 mA per mains socket. Use the leakage current specified by the UPS manufacturer as a reference. An MPS+1-AC power supply unit has a leakage current of < 0.5 mA. A 900-watt UPS is entirely sufficient to power the OpenCom 510. 4.7 Power Failure In the event of a power failure, the system memory will retain all data (program and user data) without any changes. The internal clock will continue to run for 24 hours. If the power failure lasts longer than 24 hours, the time and date will be reset to the factory setting when power is switched on again, and updated (by means of a signal from the exchange) after the first external outgoing call. With multi-terminal access configurations, the OpenCom 510 provides an emergency service feature: In the event of a power failure, the S01 interface will be switched to the S08 interface, enabling you to make calls through a connected terminal. The following is required to enable emergency service: ■ An MX+S01-8 interface card must be installed. ■ The power failure circuit of this interface card must be activated. To do so, set DIP switches S17 to S20 to "ON". The interface card is delivered with the power failure circuit deactivated (default: off ). ■ Port S01 must be connected to an NTBA (multi-terminal access) and configured as an external connection. ■ Port S08 must be configured as an internal connection. An ISDN telephone with emergency service capability must be connected to this port. 37