Configuring SIP Trunk to SIP IP PBX Calls

Perform the procedures in the following workflow to configure the Edge 8000 device for a basic SIP Trunk to SIP IP PBX application. The resulting configuration connects an existing LAN-side IP PBX host to a WAN-side Border Element host, such that internal callers can reach an outside Internet Telephony Service Provider (ITSP) and vice-versa. (Provisioning for a specific dial plan is beyond the scope of this workflow.)

For a complete illustration of the entire provisioning process, including sample outputs of the Setup Wizard, Network Interface provisioning, Static Route provisioning, and the Easy Configuration Wizard, refer to SIP Trunk Configuration for IP PBX Deployment.

Basic SIP Trunk to SIP IP PBX Application

Prerequisites

• Completion of the initial setup procedures per the Workflow for Initial Setup. This includes physically installing the device, configuring the initial platform settings (Setup Wizard), and installing the SBC SWe Edge license.
• Login access to the SBC SWe Edge WebUI as user administrator (admin)

Workflow

Configure Network Interfaces

Use this procedure to manage the way the SBC SWe Edge within the Edge 8000 device interfaces with the external network.

The SBC SWe Edge supports:

• four system-created logical interfaces: the Administrative IP, Ethernet 1 IP, Ethernet 2 IP, and Ethernet 3 IP interfaces
• user-created VLAN logical sub-interfaces

The following table explains the nature of each of the logical interfaces.

Logical Interfaces for a SIP to SIP IP PBX Application

¹ References to the Setup Wizard refer to the procedures in Running Setup Wizard, either for the Edge 8000 stand-alone or Edge 8000 High Availability deployment.

Start

1. In the Web UI, click the Settings tab.
2. Navigate to Networking Interfaces > Logical Interfaces.

3. Configure each of the logical interfaces per your network plan.
   For field definitions, refer to Configuring and Modifying Logical Interfaces in the SBC Edge documentation.

Configure Static Routes

Use this procedure to configure static routes required by your Edge 8000 device to communicate with remote networks.

In a production environment, static routes are mainly configured for routing from a specific network to another network that can only be accessed through a gateway (for a single path access or default route). When planning your network, consider these factors:

• For smaller networks with just one or two routes, configuring static routing is preferable. This is often more efficient since a link is not being wasted by exchanging dynamic routing information.
• For networks that have a LAN-side gateway on Voice VLAN or Multi-Switch Edge Devices (MSEs) with voice VLAN towards the SBC Edge, static routing configurations are not required.

In the following example, two static routes are defined:

• The first static route gives access to the SWe Edge WebUI through a VPN subnet.
• The second static route gives access to SIPP servers on the WAN side of the Edge 8000 device.
  

Start

1. In the Web UI, click the Settings tab.
2. Navigate to Protocols > IP > Static Routes.

3. Configure each of the static routes per your network plan.
   For field definitions, refer to Creating Entries in a Static IP Route Table in the SBC Edge documentation.

Run the Easy Config Wizard

Use this procedure to configure the basic call routing framework for a SIP Trunk to SIP IP PBX application.

The SBC SWe Edge WebUI includes an Easy Configuration Wizard, which enables end-users to quickly configure settings for different deployment scenarios. Based on a template, you can configure items including:

• an endpoint, with a defined user and provider
• a routing scheme, with a routing configuration applied to the scenario
• a country, with tone table parameters and emergency numbers for the chosen country

Start

1. In the Web UI, click the Tasks tab.
2. Navigate to SBC Easy Setup > Easy Config Wizard. 

3. From the Step 1 menu, complete the fields for Scenario Parameters, SIP Trunk and IP PBX.
   For SIP Sessions, enter a value based on the license allocation for concurrent call sessions you ordered when you placed your Edge 8000 order.
   For field definitions, refer to Configure a SIP Trunk With IP PBX in the SBC Edge documentation.

4. Note

   The value entered for Scenario Description will be prefixed to all SBC configuration elements that the Easy Config Wizard creates.

   Example: If you enter SIP to SIP for the description, then the Call Routing tables for this deployment will be SIP to SIP: From IP PBX and SIP to SIP: From SIP Trunk.

   Example:

   Panel	Area	Field	Value
   Scenario Parameters		Application	SIP Trunk ↔ IP PBX
   		Scenario Description	SIP to SIP
   		Telephone Country	United States
   		Emergency Services	None
   	SIP Properties	SIP Sessions	100
   SIP Trunk		Name	Other SIP Trunk
   IP PBX		Type	Other IP PBX

5. Click Next.

6. From the Step 2 menu, complete the fields for SIP Trunk and IP PBX.
   For field definitions, refer to Configure a SIP Trunk With IP PBX in the SBC Edge documentation.
   Example:

   Panel	Field	Value
   SIP Trunk: Other SIP Trunk	Border Element Server	10.230.98.141
   	Protocol	UDP
   	Port Number	5060
   	Use Secondary Border Element Server	Disabled
   IP PBX: Other IP PBX	Host	10.230.98.142
   	Protocol	UDP
   	Port Number	5060
   	Use Secondary Server	Disabled

7. Click Next.
8. From the Step 3 menu, examine the SBC Setup Configuration Summary.
   Click Previous to make a change in a previous step.
   Click Finish when you are satisfied with the entries.
9. After clicking Finish, click OK when you are ready to continue.
   Note that after clicking Finish, a confirmation message appears stating that a standard configuration is being applied and that you will need to configure additional parameters (especially for Transformation Tables, Signaling Groups and Routing Tables) before making calls. Click OK when you are ready to complete the Easy Configuration process.