Quick Installation Guide
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The UCM6304A is not pre-congured to support or carry 
emergency calls to any type of hospital, law enforcement 
agency,  medical  care  unit  (“Emergency  Service(s)”)  or 
any other kind of Emergency Service. You must make ad-
ditional  arrangements  to  access  Emergency  Services.  It 
is  your  responsibility  to  purchase  SIP-compliant  Internet 
telephone  service,  properly  congure  the  UCM6304A  to 
use that service, and periodically test your conguration to 
conrm that it works as you expect. If you do not do so, it is 
your responsibility to purchase traditional wireless or land-
line telephone services to access Emergency Services.
GRANDSTREAM DOES NOT PROVIDE CONNECTIONS 
TO EMERGENCY SERVICES VIA THE UCM6304A. NEI-
THER GRANDSTREAM NOR ITS OFFICERS, EMPLOY-
EES OR AFFILIATES MAY BE HELD LIABLE FOR ANY 
CLAIM, DAMAGE, OR LOSS, AND YOU HEREBY WAIVE 
ANY AND ALL SUCH CLAIMS OR CAUSES OF ACTION 
ARISING FROM OR RELATING TO YOUR INABILITY TO 
USE THE UCM6304A TO CONTACT EMERGENCY SER-
VICES, AND YOUR  FAILURE  TO  MAKE   ADDITIONAL 
ARRANGEMENTS TO ACCESS EMERGENCY SERVIC-
ES  IN ACCORDANCE  WITH  THE  IMMEDIATELY  PRE-
CEDING PARAGRAPH. 
EN
PACKAGE CONTENTS: 
OVERVIEW:
•  Do not attempt to open, disassemble, or modify the device.
•  Do not use a third party power adapter.
•  Do not expose this device to temperatures outside the range of 32 - 
113ºF / 0 ~ 45ºC for operating or 14 - 140ºF / -10 ~ 60ºC for storage.
•  Do not expose this device to environment outside of the following hu-
midity range: 10-90% RH (non-condensing).
•  Do  not  power  cycle  the  device  during  system  boot  up  or  rmware 
upgrade. You may corrupt rmware images and cause the unit to mal-
function.
UCM6304A 1x Ethernet Cable
1x 12V Power adapter 
PRECAUTIONS:
UCM6304A is an innovative IP PBX appliance designed for small to me-
dium business. Powered by an advanced hardware platform with robust 
system resources, the UCM6304A oers a highly versatile state-of-the-art 
Unied Communication (UC) solution for converged voice, video, data, 
fax and video surveillance application needs. Incorporating industry-lead-
ing features and performance, the UCM6304A oers quick setup, easy 
deployment and unrivaled reliability all at an unprecedented price point.
1x Quick Installation Guide 
The GNU GPL license terms are incorporated into the de-
vice rmware and can be accessed via the Web user inter-
face of the device at my_device_ip/gpl_license. It can also
be  accessed  here:  http://www.grandstream.com/legal/
opensource-software
To obtain a CD with GPL source code information please
submit a written request to info@grandstream.com
Rack mounting 
(sold separately) 
12V










