User's Manual
GXP1610/GXP1620/GXP1625/GXP1628/GXP1630 User Guide Page 7 of 42 
WELCOME 
Thank  you  for  purchasing  Grandstream  Small  Business  IP  phone  GXP1610/GXP1620/GXP1625/ 
GXP1628/GXP1630.  GXP16xx  series  is  a  next  generation  small-to-medium  business  IP  phone:  the 
GXP1620/GXP1625 features 2 lines with 2 SIP accounts, superior HD wideband audio, 132 x 48 backlit 
graphical LCD; the GXP1610 supports 2  lines with  1  SIP account, 132  x  48  graphical  LCD; GXP1630 
supports  3  lines  with  3  SIP  accounts,  132x64  backlit  graphical  LCD.    The  GXP1610/GXP1620/ 
GXP1625/GXP1628/GXP1630 delivers rich features of 3 XML programmable context-sensitive softkeys, 
dual  network  ports  with  PoE  (GXP1625/GXP1628/GXP1630  only),  EHS  (Electronic  Hook-Switch)  with 
Plantronics headsets, 3-ways conference on GXP1610/GXP1620/ GXP1625/GXP1628 and up to 4-ways 
conference  on  GXP1630,  superb  full-duplex  hands-free  speakerphone  with  advanced  acoustic  echo 
cancellation, advanced security protection for privacy, and compatible with Grandstream UCM Features. It 
is a perfect choice for small-to-medium businesses looking for a high quality, feature rich IP phone with 
affordable cost. 










