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Supplemental Alert Adapter
When an MFM is set for SAA operation, an external alert that requires a 48-VDC contact closure can be connected.
If the external alert is used to supplement the ringing for both inside and outside calls, the MFM should be assigned (through centralized telephone programming) as a Primary Individual Coverage receiver with the Ring Timing option of Immediate Ring. The MLX telephone can use Coverage On/Off to activate the alert. In addition, by specifying that both inside and outside calls or only outside calls are covered with the coverage arrangement, the sender (in this case the MLX telephone user) can specify that the device (the receiver) should ring for both inside and outside calls or only for outside calls.
If the external alert is used to supplement ringing only for calls received on Personal Lines (outside lines assigned to buttons), the same outside lines/trunks and ringing options assigned to the MLX telephone should also be assigned to the MFM. In this arrangement, the MFM device does not ring when inside calls are received on an SA or ICOM button.
An external alert connected to an MFM set for SAA operation can be manually signaled, can serve as a Calling Group calls-in-queue alert, or can provide supplemental alerting for after-hours calls received in a Night Service group. Only a strobe or other light should be used as a calls-in-queue alert; if a bell is used, it rings continuously while the number of calls in the Calling Group queue exceeds the programmed threshold.
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