Grandstream gxw-4004 Manuel D’Utilisation

 

Grandstream Networks, Inc. 

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GXW400x supports fax in two modes: 1) T.38 (Fax over IP) and 2) Fax Pass through. T.38 is the 
preferred method because it is more reliable and works well in most network conditions. If the service 
provider supports T.38, please use this method by selecting T.38 as fax mode (default).  If the service 
provider does not support T.38, pass-through mode may be used. If you have problems with sending or 
receiving Fax, toggle the Fax Tone Detection Mode setting. 
 
 

GXW400x supports RADIUS for authentication, authorization and billing purposes. Primary and 
secondary RADIUS server configurations are available to provide redundancy to this feature. In case 
Primary Radius server becomes unusable, RADIUS requests will be automatically sent to the secondary 
server. When at least one RADUIS server was configured, the device will allow users to make phone calls 
only after authorization from RADIUS server has been received. CDR (Call Detail Record) is also sent to 
the RADIUS server for billing purposes. RAIDUS server can send requests to terminate calls when run 
out of pre-paid credit.