Overview

This document will guide you through the process of configuring the Session Border Controllers to work with Switchvox.  There are two major applications - 1) SIP Trunking solutions, 2) Remote Phone solutions.  This document describes the configuration of SIP Trunking.

Introduction

For Trunking solutions, SBC to Switchvox Configuration Guide provides detailed information about the configuration requirements in the SMB SBC, Vega SBC, Netborder SBC and the Software VM SBC.  A typical deployment connects SIP Trunking Service Provider across Internet or other networks into the SBC, where the SBC provides Security, Routing, Interoperability and more, then delivers the SIP Trunk call to the Switchvox IP-PBX.   Using SIP Protocol the SBC and the Switchvox create a Trunk together.



SIP Trunking

Bringing SIP Trunks from SIP Trunking Service Providers into the SBC and then deliver the SIP Trunk calls to the Switchvox.


Switchvox IP: 192.168.77.112
SBC LAN IP: 192.168.77.124
SBC DMZ IP: 10.10.32.170
SBC Public WAN IP: 104.145.12.182
ITSP FQDN: itsp.sangoma.com


Note:  In the following configuration example, this is a DMZ-LAN setup of the SBC, and the Switchvox is located on a Private LAN.  This is one of many different network topologies that the SBC supports.  Not all network topologies will be documented in the document, please consult other Wikis for slight changes in deployment styles of the SBC.   Slight changes in configuration from this example to other network topologies are expected.

Switchvox Configuration

General Configuration

The Switchvox will typically have a Static IP or Fully Qualified Domain Name.  In this configuration we are defining the SBC as a VoIP Provider, then assigning a Outgoing Calls and Incoming Calls to/from the SBC.

VoIP Provider

Open the VoIP Providers tab.  ( Setup > VoIP providers )


Click Create SIP Provider.


Under Provider Information complete the following information:



Under Peer Settings complete the following information

Note:  When Peer is selected, the Switchvox Admin GUI doesn't report on the state of that peer, so it shows up as Unmonitored in the Server>Connection Status>VoIP Providers.


Click "Save SIP Provider"


Incoming Calls

Open the Incoming Calls tab.  ( Setup > Incoming Calls )


Click Create Single DID Route.  (or Ranged DID Route)


Under Single DID Route Settings complete the following information:



Click "Save Single DID Route"


Outgoing Calls

Open the Outgoing Calls tab.  ( Setup > Outgoing Calls )


Modify all needed pre-configured Outgoing Call Rules




When Modifying or Creating the Outgoing Call Rule, under Call Trough - the Primary Call Trough Provider - Select the SBC created from the VoIP Provider



Click "Save Outgoing Call Route"



SBC Configuration

General Configuration

The following configuration will focus on the Switchvox to SBC requirements.  It is only half of the configuration needed for proper operation, as the SIP Trunking Service Provider will also need to be configured, along with the External WAN interface and external SIP Profiles and related configuration.  The document will reference the SIP Trunking Service Provider but not show how to configure the provider.  There are other Wiki's that document how to configure SIP Trunking with SIP Trunking Service Providers.




Switchvox IP: 192.168.77.112
SBC LAN IP: 192.168.77.124
SBC DMZ IP: 10.10.32.170
SBC Public IP: 104.145.12.182
ITSP FQDN: itsp.sangoma.com


Note:  In the following configuration example, this is a DMZ-LAN setup of the SBC, and the Switchvox is located on a Private LAN.  This is one of many different network topologies that the SBC supports.  Not all network topologies will be documented in the document, please consult other Wikis for slight changes in deployment styles of the SBC.   Slight changes in configuration from this example to other network topologies are expected.



IP Settings | Network

The default IP Address of the SBC is 192.168.168.2  root/sangoma   The IP Address needs to be changed and a new admin user created.


Go to Configuration | IP Settings | Network

Press "Add" to add a DMZ IP Address

Press Save


Press "Add" to add a LAN IP Address

Press Save


Once completed you will now have an IP address on eth0 for LAN and eth1 for DMZ.

Press "Edit" to configure the Default Gateway and Hostname


Configure the Network


Apply Network

Restart Network

At this point you can access the SBC from the New LAN IP Address.


IP Settings | Media Interfaces

Go to Configuration | IP Settings | Media Interfaces

Click Edit.


Ensure the Transcoding Mode is to Hardware Hidden mode for all Vega SBC and Netborder SBC. Then click Save. 

Note:  For SMB SBC and Software VM SBC the Transcoding Mode is to Software.  The click Save.



Next click Detect Modules. Once you modules are detected click OK to continue.



IP Settings | Access Control Lists

Go to Configuration | IP Settings | Access Control Lists

Access Control Lists are a list of IP Address(es) that can have an Allow or Deny policy.  Typical practice is to have a Default Policy to Deny all traffic, then Allow specific Hosts and Subnets.  Both local trusted LAN traffic and Internet WAN traffic need to be defined separately.

Default



Local LAN Internal Network ACL

Within the ACL box, click Add.

Give the ACL a name.


Set the Default Policy to Deny.  Press Save


Within the ACL Box, press Add


Add the local Subnet, where the Switchvox resides.  Add any additional networks within the LAN environment.



Internet WAN External Network ACL

Within the ACL box, click Add.

Give the ACL a name.


Set the Default Policy to Deny.  Press Save



Within the ACL Box, press Add


Add the local Subnet, where the Switchvox resides.  Add any additional networks within the LAN environment.



Signaling | SIP Profile

Two SIP Profiles are needed.  One for the LAN side - for 'Internal' communications with the Switchvox, and another for the WAN side - for 'External' communication with the SIP Trunk Service Provider.


Go to Configuration | Signaling | SIP Profiles

A default "internal" SIP Profile will be present.  You can Delete it - then Add a new Profile  OR  Modify it.


Setup an Internal SIP Profile

Click Modify next to the default internal SIP profile.



This SIP Profile is used for assigning the SBC's LAN IP to a SIP Profile.  This is where the Switchvox will communicate with the SBC.  IP Address. Port. Transport and other interop settings are defined here.  Not all SIP Profile settings are required. here are the highlights.


Press Save


Setup an External SIP Profile

Click Add to create a New SIP profile for the External SIP communications.



This SIP Profile is used for assigning the SBC's DMZ IP to a SIP Profile - the WAN IP address of the Firewall will be NAT'd through to the DMZ IP of the SBC.  This is where the SIP Trunk Service Provider will communicate with the SBC.  IP Address. Port. Transport and other interop settings are defined here.  Not all SIP Profile settings are required. here are the highlights.



Press Save


 

Signaling | SIP Trunks

Two SIP Trunks Profiles are needed.  One for the Switchvox and another for the SIP Trunk Service Provider.  SIP Trunks Profile is where the Peer attributes are configured.


Setup the Switchvox in a SIP Trunk Profile

Go to Configuration -> Signaling -> SIP Trunks

Click Add

The following parameters define the location and behavior specific to the Switchvox;

 


Press Save

 

Setup the SIP Trunking Service Provider in a SIP Trunk Profile

Go to Configuration -> Signaling -> SIP Trunks

Click Add

The following parameters define the location and behavior specific to the SIP Trunking Service Provider;


Press Save

 


Routing | Call Routing

The SBC will require two Call Route Dial Plans.  One Dial Plan to send calls from the Switchvox to the SIP Trunking Service Provider, and another Dial Plan to send calls from the SIP Trunking Service Provider to the Switchvox.


Go to  Configuration | Routing | Call Routing


Outbound Calling

Click the Add button in the Basic Call Routing section to add a new routing plan.


Give the Dial Plan a name.  Outbound_Calling - then click Add. 


Basic Call Routing Setup



Once in the new routing plan click Add to add a new rule. 



This very next Dial Plan Rule is a redundant Dial Plan, when ACL is in place.   But this shows some extra flexibility in the Dial Plan to check various attributes of a call that are not related to the SIP Protocol.  This example is a Check IP Address.  If the IP Address does not match, the SBC will respond with a 403 Forbidden.  And then not process any remaining rules in the Dial Plan.


Press Save

 

Once "Check IP" in saved, click Add to insert another Dial Plan Rule.


This next Dial Plan Rule is most important, as it 'bridges' the Outbound Call from the Switchvox to the SIP Trunking Service Provider - SIP Trunk Profile that was defined earlier.


Press Save

 

Your Call Routing should now look like this for Outbound Calls to the SIP Trunking Service Provider.




Inbound Calling

Click the Add button in the Basic Call Routing section to add a new routing plan.


Give the Dial Plan a name.  Inbound_Calling - then click Add. 


Basic Call Routing Setup



Once in the new routing plan click Add to add a new rule. 




This very next Dial Plan Rule is a redundant Dial Plan, when ACL is in place.   But this shows some extra flexibility in the Dial Plan to check various attributes of a call that are not related to the SIP Protocol.  This example is a Check IP Address.  If the IP Address does not match, the SBC will respond with a 403 Forbidden.  And then not process any remaining rules in the Dial Plan.


Press Save

 

Once "Check IP" in saved, click Add to insert another Dial Plan Rule.


This next Dial Plan Rule is most important, as it 'bridges' the Inbound Call from the SIP Trunking Service Provider to the Switchvox - SIP Trunk Profile that was defined earlier.


Press Save

 

Your Call Routing should now look like this for Inbound Calls to the Switchvox.



Signaling | SIP Profile

Two SIP Profiles were created earlier.  We need to go back and assign the appropriate Call Routing Dial Plan to the correct SIP Profile.  The Inbound_Calling Dial Plan is assigned to the ServiceProivder_External SIP Profile, as calls from the SIP Trunking Service Provider will will be going Inbound_Calls to bridge to the Switchvox.  And the other direction, the Switchvox will call the Switchvox_Internal SIP Profile which will go to the Outbound_Calling Dial Plan, which will bridge the call to the SIP Trunking Service Provider.


Switchvox_Internal SIP Profile

Now that both routing plans are made go to Configuration | Signaling | SIP Profiles and modify the Switchvox_Internal SIP profile. 

Under Session Routing change the Routing Plan to Outbound_Calling. Then click Save to continue. 


ServiceProvider_External SIP Profile

Modify the ServiceProvider_External SIP profile. 

Under Session Routing change the Routing Plan to Inbound_Calling. Then click Save to continue.


Apply Configuration

You are Done.  Time to save your efforts.


Or Here



Finalizing the Installation

Starting the SBC application and other useful features on the SBC.


Go to Overview -> Dashboard -> Control Panel and Start the following services.



Enable all IDS rules by going to Configuration -> Security -> Intrusion Detection and ensuring all are checked. Once done click Update to apply the changes.


Next go to System -> Server -> Web and change the Network Interface from All interfaces to only the internal network interface.


In this example eth1 is the internal network interface. Once done click Save.


Next go to System -> Server -> Web and change the Network Interface from All interfaces to only the internal network interface. Now both the web server and SSH will only be available on your internal network.


Since the configuration is now completed get a backup. Go to System -> Management -> Backup-Restore and click Backup.


Name the file accordingly and click backup to download a copy. Ensure you keep this safe somewhere and always take a new backup after each change made to the SBC.