Got an Switching System Panasonic KX-T61610B. A few months ago, on line 11 I was able just to program, not to speak (no dial tone). Since this Monday, on that lousy line 11 I can only speak, but I can't program anything (no data link). I checked the wiring and it's OK, and between the L and H wires I have around 14 V, same as line 12.
Can anybody help?
Thanks

I think on the panasonic 616 you have to put the system in programming with a switch on the ksu and program from the first extension. there is also station level programming using some switches on the back of the phone. hope this helps.

Thanks for your quick answer, but I'm afraid that didn't help...
I know about that switch on ksu, and also about the programming switch on the proprietary phone... The problem is that on line 11 i have just dial tone, but no digital info (e.g. time/date displayed), nor programming info.