While the phone is on-hook and idle, press MUTE <password> INT # or MUTE <password> 468 #.
The phones port settings are shown in sequence. The options vary between different models of phone.
PHY2=
This is the PC connection LAN socket marked as on the phone. Press 1 or 0 to enable or disable the hub interface respectively. To continue, press #.
IR=
This is the infrared (IR) port located on the front of some H.323 IP phones. Press 1 or 0 to enable or disable the hub interface respectively. To continue, press #.
Press # to save the new values.
Result
New values being saved is displayed and then the set returns to normal operation.