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versa. All you need to make sure is that the 2 gateways are able to locate each other (they should be on
the same LAN or on Public IPs).
GXW–400
X & GXW–410X SCENARIO/TOLL- FREE CALLING BETWEEN LOCATIONS
Branch A - Boston, MA
4 employees
In this diagram, configure the SIP Server field to be the IP Address of the other gateway (i.e. configure IP
address of FXS gateway to be SIP Server of GXW410x and vice versa).
Please be sure you set SIP
Registration to No.
EXPECTED CALL FLOW: Analog Phone (GXW400x) picks up and dials destination PSTN number. The call
gets routed to the GXW410x which dials out the digit string onto the FXO Lines, thus reaching the
destination PSTN endpoint. On the reverse, incoming calls from PSTN endpoints will be routed
automatically to the FXS Gateway through the GXW410x.
FXS
AND FXO GATEWAY CONFIGURATION EXAMPLE
GXW-400x GXW-410x
Profile 1
SIP Server - Set it to IP Address of
GXW410x
SIP Registration - No
Outgoing Call without Registration - Yes
NAT traversal – No
Advanced Settings
STUN Server - Blank
Use Random Port - No
Advanced Settings
STUN Server - Blank
FXO lines
Wait for Dial Tone - Y or N (whichever works for your
PSTN Service Provider)
Stage Method - 1
Offhook Auto Dial - 444 @ch1-8:p1; ch1-8:5060++;
Channels
1-8 5060 Profile 1
Local SIP Listen port (For VOIP to PSTN calls) - 5060++
Profile 1
SIP Server - Set it to IP Address of GXW400x
SIP Registration - No
NAT traversal - No
Branch B – Denver, CO
4 employees
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GXW-400x
GXW-410x
Analog
Phones
P
P
S
S
T
T
N
N
C
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FX0
Grandstream Networks, Inc. GXW-410x User Manual Page 9 of 37
Firmware 1.0.0.53 Updated: 04/2007