First post and green to Mitel IP systems so please be kind.
I am looking for some help in regards to an issue with one of our teachers classroom IP phones (5304)
This phone is able to receive an internal call but once the handset is picked up I only hear a dial tone. If I immediately hang up the phone the internal call is still active and will be ringing in.
I first thought It was an accidental feature code input from the end user but now I am not sure. First thoughts on where I should start to trouble shoot would be great.
I did look to see if maybe a few feature sets where initiated but none of them seemed to change the issue with the phone.
example tried
Headset disable - 316
Headset Off - 317
Answer (ringing Call) - 351
I can call the number internally and answer the call by using the I/C button but that is it.