I HAVE INSTALLED AN IP SWITCH. 406 WITH 4 DS 30S AND A 16 PORT POT MODUAL.
INTERMITTANTLY A PHONE WILL LOCK UP AND CANNOT BE USED. COLDSTARTING THE SET DOES NOTHING. THE PHONES ARE 4406S AND 4412S.NOT THE SAME PHONE EVERY TIME.
THE ONLY THING THAT SOLVES THE PROBLEM IS A COLDSTART OF THE ENTIRE...
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