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For example on the GX4004 and GXW4008 the user connected to port 1 can reach the user connected to
port 3 by dialing *** and 73. Digit 7 indicate d using inter-port calling feature, digit 3 indicat es the port
number which should be reached. At th e same manner the user connected to port 4 can re ach the user
connected to port 8 by dialing *** and 78.
On the GXW4024 inter-port calling is achieved by dialing *** an d 7 plus two extra digits corresp onding to
the port number. For example the user connected to port 1 can be reached by dialing *** and 70 1; the
user connected to port 24 can be reached by dialing *** 724.
PSTN P
T
ASS
HROUGH
This feature is only applicable to GXW4004 and GXW4008 models. The RJ-11 line
GXW400X side connected to a legacy PSTN line, fu nctions as a pass throu gh jack when the GXW400X
loses power or becomes unregistered. In this case, analog phone connected to FXS port 1 will be directly
connected to RJ-11 jack marked as LINE. The pa ss through/life line mode enables the user to use the
analog phone for PSTN calls directly without using an access code.
S
R
ENDING AND
ECEIVING
GXW40XX supports fax i n two m odes: 1) T.38 (Fax over IP) a nd 2) Fax P ass through. T.38 i s the
preferred method because it is more re liable and works well in m ost network con ditions. If the service
provider supports T.38, please use this method by se lecting 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.
S
RADIUS P
UPPORT
GXW40XX supports RADIUS for au thentication, authorization and billing
secondary RADIUS server configurations are available to provid e redundancy to this feature. In ca se
Primary Radius server becomes unusable, RADIUS requests will be automatically sent to the second ary
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 purp oses. RAIDUS server can send requests to terminate calls when run
out of pre-paid credit.
The GXW400x will be
configuration. User will be able to configure pri mary and seco ndary RADUIS server IP Ad dresses or
FQDNs. Once at least one RADUIS server was configured, the device will allow users to make phone
calls only after pe rmission from RADIUS server has been received. In ca se Primary Radius server
becomes unusable, secondary will take role of p rimary and will manage credit recourses in the network.
Imbedded RADIUS client also supports request generated by
pre-paid credit.
Grandstream Networks, Inc.
/L
L
IFE
INE
F
AX
ROTOCOL
able to work in VoIP b
GXW40XX User Manual
Firmware 1.0.5.10
illing environment using redundant double server
Radius server to terminate calls when run out of
jack on th e
purposes. Primary an d
Page 17 of 40
Last Updated: 01/2012
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