Occasionally we hear people that want to connect an Asterisk to an IP Office. The below submission was compliments of Tek-Tips.com
IP Office setup:
1) Create a new SIP Trunk (SIP Licenses are required for this)
2) The only thing you fill in here is the IP address of Asterisks/TrixBox. Please note that this config is done anonymously, so I assume the two machines are either on the same LAN or connected securely via a VPN, I would not recommenced this setup if you are doing this over the internet.
IPSP IP : Asterisks IP
Prim Auth / Pass:
Check “in Service” box
3) Setup SIP URI – ADD a channel and set this to – Make sure to set the groups to something unique. I used group 420 for incoming and outgoing.
4) The other tabs can be left default settings
5) Create a short code for calling the Asterisk Box. The extension on my asterisks are 4xx. So my SC looks like this:
Code: 4XX ( Change this with your extension format )
Feature: Dial 3k1
Tel Number: 4N”@x.x.x.x” (Replace with IP of asterisks)
Line Group : 420 (Group Id Set in URI)
6) Create an Incoming Call Route Like this:
Bearer: Any Voice
Line Group : 420
Default Value is . (just a period)
7) Under Each User, make sure to set their Sip Name to their extension number under there SIP Tabs.
ASTERISK Setup VIA FreePBX GUI
1) Create a SIP Trunk that looks like this:
Trunk Name: IPO
host=x.x.x.x (IP of IP Office)
2) Create an Outbound Route
Route name: IPOffice
Intra Company Route
Dial Patterns : 2XX ( Replace with the format of your IP Office extension )
Trunk Sequence: SIPIPO
3) Under General Settings
Set “Allow Anonymous Inbound Sip Calls” to yes
That should be it, you should now be able to call back and forth between the 2 systems as if they are one.