Issabel is an Open Source Unified Communications Software. SIP Trunk configuration instructions below apply to the following Issabel versions:
Documentation is provided for scenario where Issabel server uses Static IP address on the public Internet and when Dynamic IP address is used.
To begin SIP Trunk configuration open PBX Configuration:
PBX
on left side menu bar.Next follow "Static IP address" or "Dynamic IP address" section below.
Static IP address (a.b.c.d
in our example above) of your Issabel server will be added to GoTrunk service IP ACL (Access Control List) and outbound calls coming from that IP address will be accepted without requiring any further authentication (SIP username and password). This is the most efficient way of authenticating SIP calls.
Inbound calls to one of Telephone Numbers on your GoTrunk account will be sent directly to Issabel public IP address. Since the calls will be coming from known peer
(IP address of SIP Trunking service q.x.y.z
in our example above) Issabel will accept them without requiring any further authentication.
To configure Issabel server to work with GoTrunk SIP trunk using IP authentication the following changes are required:
Follow steps below to add SIP Trunk:
Trunks
.Add SIP Trunk
button.gotrunk
PEER Details
field (replace eu.st.ssl7.net
with amn.st.ssl7.net
if you want to use North America POP):type=peer host=eu.st.ssl7.net context=from-trunk
Submit Changes
button.Next follow "Routing configuration" instructions below.
For outbound calls from Issabel to GoTrunk SIP Credentials (SIP username and password) authentication is used.
For inbound calls to one of Telephone Numbers on your GoTrunk account to work Issabel needs to Register with GoTrunk service (and periodically refresh registration in case IP address changes). Calls will be sent to IP address which was sent in the most recent Issabel Registration. Since the calls will be coming from known peer (IP address of SIP Trunking service q.x.y.z
in our example above) Issabel will accept them without requiring any further authentication.
To configure Issabel server to work with GoTrunk SIP Trunk using SIP Credentials authentication the following changes are required:
Follow steps below to add SIP Trunk:
Trunks
.Add SIP Trunk
link.gotrunk
PEER Details
field (replace eu.st.ssl7.net
with amn.st.ssl7.net
if you want to use North America POP):type=peer host=eu.st.ssl7.net context=from-trunk qualify=yes defaultuser=outbound_sip_username ; <- replace with your Outbound SIP Username remotesecret=outbound_sip_password ; <- replace with your Outbound SIP Password
Register String
:incoming_sip_username:incoming_sip_password@eu.st.ssl7.net
Submit
button.To verify your Issabel server has correctly registered on GoTrunk network follow steps below:
PBX
menu.Tools
.Asterisk-Cli
.sip show registry
Execute
button.Registered
. Any other state indicates communications problem (firewall / NAT issue) between your Issabel server and GoTrunk network or incorrect Register string in your trunk configuration.Next follow "Routing configuration" instructions below.
Follow steps below to add Outbound route:
PBX Configuration
Outbound Routes
.9_outside
link.Route Name
Route CID
Dial Patterns
as neededgotrunk
from drop down list.Submit Changes
button.For each of the Telephone Numbers on your GoTrunk account follow steps below to add Inbound route:
PBX Configuration
Inbound Routes
.Add Inbound Route
button.Description
field and into DID Number
field.Submit
button.Note: make sure to click Apply Config
button in top right corner of the page to reload your FreePBX configuration.