eVOX PBX connecting to E1-GW

To interconnect e1 Gateway (or any SIPGW) to eVOX-PBX (or other PBX , like FreePBX, concept is the same):

There is two method:
First Method :
E1-GW sign in to IPPBX.  To use this method, create an Dummy Extension at IPPBX, and let the E1GW to sign in to IPPBX.  Then Create a SIP trunk for IPPBX to route outbound call via E1GW.
To receive call, create DID number as Extension in IPPBX, then follow-me to route to respective destination (* Take note, to do in this way, Inbound route will not work)
** Disadvantage of this method is , all incoming call, the caller’s callerid will not show in IPPhone (or destination extension).  All incoming call’s caller id will show as the Extension of E1-Gw sign to IPPBX. (As if that extension receive call and pass to other local extension)

Second method :
This method are more complicated to setup, there is no need to register of extension from e1-gw to ippbx, call are pass by inbound route, and via trusted sip trunk .

1) at eVOX PBX

A) create sip trunk :
Outgoing Setting

TRUNK NAME : E1_GW_out
PEER Detail:
 host= 192.168.0.111  # IP-ADDRESS-OF-E1-GW
 type=friend
 qualify=yes
 port=5060
 context=from-pstn
 insecure=very        # port,invite {latest version of asterisk}

Incoming Setting

USER Context : E1_GW_in
USER Detail : 
 disallow=all
 allow=alaw&ulaw
 canreinvite=no
 context=from-pstn
 dtmfmode=rfc2833
 qualify=yes
 insecure=very       # port,invite {latest version of asterisk}
 host= 192.168.0.111 # IP-ADDRESS-OF-E1-GW
 type=friend

Registration : NO-NEED

B) Then, create inbound route for DID to route to specific Extension.

2)Setting at E1 Gateway
– Create SIP Trunk without sign in to eVOX PBX
– If sign in to eVOX PBX, then all inbound call will appear the signed in Ext number (as discuss in Method 1 above)
– Take note of “Register to Remote” -NO
e1-GW-Trunk

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