Nokia n70 cuts out when makinga call

[JK200SX]

I have a Nokia N70 that cuts out when attempting to make a ohone, during a phone call and owhe someone attempts to call, the phone hangs up on them once I have accepted the call. This is an intermittent problem, but is driving me crazy. When thephone hangs up it makes a beep and then loses the line. I notice that there are numbers in thelcd screen that I didn't press when that happens.Any suugestions?

[JK200SX]

Mod, please delete as thread duplicated in error