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Troubleshooting steps for Grandstream GXP2135 - Telavox Visit the Grandstream Firmware Download page and update the phone to the latest firmware Test Account Registration Navigate to Menu > Status > Account Status Ensure the SIP account is registered If not: Check the SIP server address, username, and password in the phone's settings Confirm the SIP server is reachable and operational
Grandstream Networks, Inc. Connect the first GXP EXT board to the GXP2120 2110 using the connection cable found in the GXP EXT board package The first GXP EXT board draws power directly from the phone
Master Reset Grandstream GXP-2170, How To - HardReset. info This is the best method to Power Reset Grandstream GXP-2170 Learn how to set all Grandstream GXP-2170 settings to factory defaults How to Master Reset Grandstream GXP-2170: Firstly, unplug the power cord from the Grandstream GXP-2170 router Press and hold the Reset Key, while you plug back the electric cord Keep holding the Reset Button for a moment until the first port light is on again