Merlin Magix V4 key mode, "real" POTS lines, no TK-ID delay option. 4424D console set for ring immediate, others 44xxs set as delay. Customer says at times incoming calls "no Ring" just flash. I made numerous test calls, no failures.
I was thinking power unit but it tests good at each test point.
Has anyone ever had this trouble?
Thanks in advance,
Mike