User's Manual
Table Of Contents
- Welcome
- Installation
- Figure 1: Connecting the GXP2120/2110 and the GXP Extension
- Product Overview
- Using the GXP21xx SIP Enterprise Phone
- Figure 2: Keypad GUI Flow
- Software Upgrade & Customization
- Restore Factory Default Setting
Grandstream Networks, Inc. GXP21xx User Manual Page 6 of 44
Firmware version: 1.0.1.83 Last Updated: 08/2011
SAFETY COMPLIANCES
The GXP21xx complies with FCC/CE and various safety standards. The GXP21xx power adaptor is
compliant with the UL standard. Only use the universal power adaptor provided with the GXP21xx package.
The manufacturer’s warranty does not cover damages to the phone caused by unsupported power adaptors.
WARRANTY
If you purchased your GXP21xx from a reseller, please contact the company where you purchased your
phone for replacement, repair or refund. If you purchased the product directly from Grandstream, contact
your Grandstream Sales and Service Representative for a RMA (Return Materials Authorization) number
before you return the product. Grandstream reserves the right to remedy warranty policy without prior
notification.










