Grandstream Networks GXP21XX user manual Connecting the GXP2120/2110 and the GXP Extension

FIGURE 1: CONNECTING THE GXP2120/2110 AND THE GXP EXTENSION

GXP2120 with GXP Extension GXP Extension

Connecting the GXP2120/2110	Reverse side of connection with
to GXP Extension	connection plate

Reverse side of connection w/connection plate

GXP2120/2110 has a special port on the back.

Connect the first GXP EXT to the GXP2120/2110 using the connection cable found in the GXP Extension package. The first GXP EXT draws power directly from the phone. Connect the second GXP Extension unit using the connection plate and the connection cable. The GXP2120/2110 will automatically reboot and power up the GXP Extensions. Grandstream recommends, though not required, to use a separate power supply with the second GXP EXT.

NOTE: Should your system lose power, please unplug your devices and power up the GXP2120/2110 first.

Powering up the system:

1.The GXP2120/2110 will boot up first;

2.The GXP2120/2110 LEDs will be solid red;

3.The status light in the top right corner of the GXP Ext will blink in red;

4.All of the LED indicators on the GXP Ext will flash three times;

5.The status light at the top right corner of the GXP Ext will turn to solid green.

NOTE:

1.Extension for GXP2120/2110 is the same for GXP2020/2010 models. However, GXP2120/2110 uses a different-shaped connector for the special port (as shown above). Extension cables will be included with the extension board.

2.Extension for GXP2120/2110 does not support hot-swap. Once connected, user should reboot the phone to ensure the set up will work correctly.

3.GXP2120/2110 can drive 2 extension modules. Independent power adapters are not needed for extension modules.

Grandstream Networks, Inc.	GXP21xx User Manual	Page 5 of 41
	Firmware version: 1.0.1.66	Last Updated: 05/2011