Grandstream Networks, Inc. GXP21xx User Manual Page 3 of 41
Firmware version: 1.0.1.66 Last Updated: 05/2011
Your Grandstream GXP21xx Enterprise IP p hone is feature-enriched, sophisticated, yet sim ple to use.
The GXP21xx delivers superior HD audio quality, rich and leading edge tel ephony feat ures, pers onali zed
information and customizable application service, automated provisioning f or eas y depl oyment , advanc ed
security protection for privacy, and broad interoperability with mos t 3rd party SIP devices and leading
SIP/NGN/IMS platforms.
The GXP21xx supports a broad range of codecs, security protection, PoE, dual 10/100m bps Ethernet
ports, along with customizable XML provisioning and application featur es. Users can expect superior
audio quality using the new high definition handset, hands-free speakerphone, or headset. Also, it can
support up to 5-way conferencing, multi-languages, dual-color LEDs, presence and B usy Lamp Field
(BLF). It presents a large eas y-to-read backlit graphical display along with m ultiple XML keys to further
enhance the user experience. The GXP2120/2110 is also expandable with one to two expansion modules.
The GXP21xx is a perfect choice for enterprise users looking for a high qua lity, feature rich multi-line IP
phone with the best values.
Caution: Changes or modifications to this product not expressly approved by Grandstrea m, or operati on
of this product in any way other than as detailed by this User Manual, cou ld void your manufacturer
warranty.
Warning: Please do not use a different power adaptor with the G XP21xx as it may cause damage to the
products and void the manufacturer warranty.
• This document is subject to change without notice. The latest electron ic vers i on of this user m anual is
available for download from: http://www.grandstream.com/support
• Reproduction or transmittal of the entire or any part, in any form or by any means , electron ic or pr int,
for any purpose without the express written permission of Grandstream Networks, Inc. is not
permitted.