Hey everyone. I got a problem, ve

[hafizhsatria]

Hey everyone.
I got a problem, very big.
I have panasonic kx ns 300 with status light solid red. I log into the web console and cleared the error log, the light back to green.
The problem is, some of the extension didnt work (no beep sound when the phone handle is picked up) some of the others extension did successfuly call outside but apparently no sounds received by the recipient. Please help me im lost.

 

[Ired]

some of the extension didnt work (no beep sound when the phone handle is picked up)

First of all check the cabling. What kind of type those extension are (analog, IP: MGCP or SIP, DECT)?
.
.

some of the others extension did successfuly call outside but apparently no sounds received by the recipient

.
Question is the same: type of extensions?