User's Manual
GXP1520/GXP1525/10 
Small Business HD IP Phone 
The GXP1520/1525/10 is a powerful IP phone for small-to-medium businesses (SMBs). This Linux-
based model includes 2 lines, 3 XML programmable soft keys and 3-way conferencing. A 132x48 
backlit LCD screen creates a clear display for easy viewing. Additional features such as dual switched 
10/100 Mbps ports, HD audio, multi-language support, integrated PoE (GXP1525 only), and call-waiting 
allow the GXP1520/1525 to be a high quality, versatile and dependable office phone. 
Feature Highlights: 
•  2  dual-color  line  keys  (with 2  SIP  accounts  and  up  to  2  call  appearances), 3  XML  programmable 
context-sensitive soft keys, 3-way conference, multi-language support 
•  132*48 pixel backlit LCD display 
•  HD wideband audio, full-duplex hands-free speakerphone with advanced acoustic echo cancellation, 
Electronic Hook Switch (EHS) with Plantronics headsets 
•  Automated  provisioning  using  TR-069  or  encrypted  XML  configuration  file,  SRTP  and  TLS  for 
advanced security protection, 802.1x for media access control 
•  Personalized  music  ring  tone/ring  back  tone,  and  integration  with  advanced  Web  and  enterprise 
applications, local weather service 
•  Dual-switched 10/ 100 Mbps ports, integrated PoE (GXP1525 only) 
•  Large phonebook (up to 1000 contacts) and call history (up to 200 records) 
•  Use with Grandstream’s UCM6100 series IP PBX appliance for Zero-Config provisioning, 1-touch call 
recording and more 



