Intercom doesn't make beeping sound only flashes Merlin phone sy
Depending on the type of merlin system you have, you should be able to turn the ringers on by moving the switch on the left side of the phone marked T . P to the "p" position. All the lights should light and the set should ring every couple of seconds. Press the line you want to ring and enter *37, repeat for all lines you want to ring. If you want all lines to ring , press any line button and enter *347, slide the T . P switch back to the center "." position.
Hope that helps
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