Grandstream Networks GXV3350 Administration Manual page 7

Note
1. The GBX20 is an additional accessory for the GXV3350. Therefore, the GBX20 (including extension module accessories for
installation) is not included in the GXV3350 package.
2. In case two or more GBX20 extension modules are connected to the GXV3350, the second GBX20 needs to be powered on
by a 12V/1A PSU.
Installing the GBX20 to GXV3350
To set up the GBX20 with the GXV3350, please follow the steps below:
1. On the back of the GBX20 and the GXV3350 there are slots for connector plate. Attach the connector plate between the
slots for the GBX20, Apply the screw provided and securely tighten the connector plate to the GBX20 (see next figure).
2. Attach the other side of the connector plate to the GXV3350's EXT slots like shown in the figure below:
3. Connect the GBX20 to the GXV3350 via the USB port using the USB cable provided with the GBX20.
4. Install the phone stands on the GXV3350 and the GBX20.
5. Power up the GXV3350. The GBX20 will show the booting up screen with version information and connecting status.
6. After successfully booting up, the extension board will stay in idle. Press and hold the LEFT button for 3 seconds to check
the version information and status.
The GBX20 can be configured via the web GUI of the GXV3350 connected. After successfully configured, press LEFT or RIGHT
button on the GBX20 and users could browse all the Programmable Keys' status in different pages.
● 1x GBX20.
● 1x GBX20 Stand.
● 1x Connector.
● 1x TypeA-MicroB USB Cable.
● 1x 12V/1A Power Adapter.
● 1x Screw.
● 1x Quick Installation Guide.
Table 4: GBX20 Extension Module Packaging
Figure 5: GBX20 with connector
Figure 6: Connect GXV3350 and GBX20