Grandstream Gateway With Asterisk+Asterisk-GUI

Here I’m using Grnadstream FXO Gateway GXW4104 Login to GXW4104 Select Profile 1 SIP Server: IP address of Asterisk box SIP Registration: No

Select FXO Lines 4. Unconditional Call Forward to VOIP: ch1-4:604;

Here 604 is the extension which the incoming call to be routed in asterisk.

In Asterisk , edit the following files.

users.conf

[gxw4104]
trunkname = Grandstream 
trunkstyle = voip 
type = peer 
context = DLPN_incoming 
host = IP address of Grnadstream Gateway 
hasexten = no 
hassip = yes 
insecure = port 
canreinvite = no 
allow = all

extensions.conf

[CallingRule_Call_out]
exten = _X.,1,Macro(trunkdial-failover-0.3,SIP/gxw4104/${EXTEN})

[DLPN_ePillars] 
include = CallingRule_Call_out  

[DLPN_incoming] 
exten = 604,1,Dial(SIP/604)`

It will be available in Asterisk-GUI after reloading asterisk.