User's Manual
Table Of Contents
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GXW42xx User Manual 
Version 1.0.5.43 
WELCOME 
Thank you for purchasing the Grandstream GXW42XX Analog FXSIP Gateway.  The GXW42XX offers an 
easy to manage, easy to configure IP communications solution for any business with virtual and/or branch 
locations. The  GXW42XX  supports  popular  voice  codecs  and  is  designed  for  full  SIP  compatibility  and 
interoperability  with  third  party  SIP  providers,  thus  enabling  you  to  fully  leverage  the  benefits  of  VoIP 
technology, integrate a traditional phone system into a VoIP network, and efficiently manage communication 
costs. 
This manual will help you learn how to operate and manage your GXW FXS Analog IP Gateway and make 
the best use of its many upgraded features including simple and quick installation, multi-party conferencing, 
and direct IP-IP Calling.  This IP Analog Gateway is very easy to manage and scalable, specifically designed 
to be an easy to use and affordable VoIP solution for the small – medium business or enterprise. 
Gateway GXW42XX Overview 
The new GXW42XX series has a compact and quiet design and offers superb audio quality, rich feature 
functionality,  strong  security  protection,  and  good  manageability.  It  is  auto-configurable,  remotely 
manageable and scalable. 
The  GXW42XX  series  features  16,  24,  32  or  48port  FXS  interface  for  analog  telephones,  dual 
10/100/1000Mbps network ports, and RJ21analog port. In addition, it supports the option of 4 SIP Server 
profiles,  caller  ID  for  various  countries/regions,  T.38  fax,  flexible  dialing  plans,  security  protection 
(SIPS/TLS), comprehensive voice codec including G.711 (a/u-law), G.723.1, G.726(16/24/32/40 bit rates), 
iLBC and G.729. 
Safety Compliance 
The GXW42XX is compliant with various safety standards including FCC/CE. Its power adapter is compliant 
with UL standard.  
Warning:  Use  only  the  power  adapter  included  in  the  GXW42XX  package.    Use  of  alternative  power 
adapter may permanently damage the unit. 










