I have a 228 with ACPU 2.51
Intermittently the LCR keys won't get a dial tone, sometimes work just fine. It is system wide as far as I can tell and yes the keys are OK on the phones, Swapped EVCM no good. Then thought it was just half the Cabinet and swapped 2nd Power supply, still getting the problem.
Another factor is the customer has been more active in administration, the IT guy has taken to programming it for the Basics, he already blew away the G-screen once. He is replacing some older phones with newer M32s.
Anybody seen this one? Now I'm Thinking the First Power supply or the ACPU. I'm not sure what might be slowing down communications across the system.
This is a strange one....Anybody?