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DEFINITY Made Easy Tools
Issue 3, December 2001
System 75 XE to R8si (Blowback)
Modify external alarm connections [75 XE upgrade]
You modify the external alarm connections if necessary (that is, if they changed with this upgrade).
See the Auxiliary lead appearances at AUX connector for R7si table for the current pinouts for an external alarm, and the Auxiliary lead appearances for System 75, G1, and G3 table for the prior pinouts.
The control carrier AUX connector outputs include:
- Alarm monitoring for the auxiliary cabinet.
- Seven -48 VDC power sources for emergency transfer units.
- Three -48 VDC power sources for remotely powering 3 attendant consoles or telephone adjuncts.
- The remote management terminal interface trunk connection location.
- Access to a relay contact is available to actuate a customer-provided light, bell, or similar alarm device. Administer the system to make contact when a major, minor or warning alarm condition occurs in the system. The circuitry required for this feature is customer-provided. The device connected to the alarm leads must not exceed a rating of 30 VAC RMS or 60 VDC at 0.75 amps.
A 25-pair connector labeled AUX is provided on the rear of the control carrier. Connect a cable to this connector and route to a connecting block on the trunk/auxiliary field.