Panasonic KX-T336 System Reference Manual page 1464

3.10 Conference trunk failure (Basic)
Error Code
Possible cause of
the malfunction
Countermeasures
Note
080x
x= 0 : for all basic conference trunks (1 to 8 )
1 to 8 : for individual basic conference trunk 1 to 8
1) Basic conference trunk on TSW card failure.
Enter port test command * to check
the faulty trunk from the mainte-
nance terminal.
No
Replace the TSW card
* Refer to Section 14-F-4.03 "Port Test procedure."
14-E-13
End
Pass
Enter INS command for
the port from the
maintenance terminal