Grandstream Networks, Inc.  GXP User Manual  Page 9 of 39  
            Firmware 1.1.6.46         Last Updated:  03/2008 
 
Table 4: GXP Comparison Guide 
 
Features GXP-280 GXP-1200 GXP-2000 GXP-2010 GXP-2020 
LCD Display 
128x32 pixel  128x32 pixel  130x64 pixel  240x120 pixel  320x160 pixel 
Number of Lines 
1 2  4  4  6 
Programmable 
Hard Keys 
No No  7  18  7 
Soft Keys 
3 3  No  3  4 
Extension Module  
No No 
Yes, up to 2 
Expansion 
Modules, 56 
nodes each 
Yes, up to 2 
Expansion 
Modules, 56 
nodes each 
Yes, up to 2 
Expansion 
Modules, 56 
nodes each 
 
Table 5:  GXP Key Features in a Glance 
Features Benefits 
Open Standards Compatible 
SIP 2.0, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, 
DNS (A record and SRV), DHCP (both client and server), PPPoE, 
TFTP, NTP, Telnet, and TLS (pending). 
Superb Audio Quality 
Advanced Digital Signal Processing (DSP), Silence suppression, 
VAD, CNG, AGC. 
Network Interfaces 
Dual 10/100mbps Ethernet ports, headset jack (RJ22 and/or 2.5mm 
jack). 
Feature Rich 
Traditional voice features including caller ID, call waiting, hold, 
transfer, forward, block, autodial, off-hook dial, and click to dial. 
Advanced Features 
Multi-line support with dual-color LED (except on GXP-280), multi-
party conferencing, line extension interface, large back-lit (except on 
GXP-280) graphic LCD, 5 or 3 navigation keys, dedicated buttons for 
hold, send, speakerphone, headset, transfer, conference (for up to 5 
parties depending on model), mute, message, Do-not-disturb, phone 
book, intercom/paging. 
Advanced Functionality 
Custom down-loadable ring-tones, SRTP, SIP over TLS (pending), 
multi-language support and XML enabled, adjustable positioning 
angles, wall mountable, AES encryption. 
Table 6:  GXP Hardware Specifications 
 
LAN Interface (Ethernet ports) 
Two (2) 10/100 Mbps Full/Half Duplex Ethernet Switch with LAN and PC port 
with auto detection 
Graphic LCD Display 
 
 
 
 
GXP-280 GXP-1200 GXP-2000 GXP-2010  GXP-2020 
128x32 
pixel 
128x32 
pixel
 
130x64 
pixel
 
240x120 
pixel
 
320x160 
pixel
 
 
Expansion Module Support 
 
 
 
 
GXP-280 GXP-1200  GXP-2000 GXP-2010  GXP-2020 
No No  Yes  Yes  Yes 
 
Headset Jack