SIP gateway

A SIP gateway enables the transport of Voice over Internet Protocol (VoIP) media between IP networks and the Public Switched Telephone Network (PSTN) or between disparate IP networks using the SIP signaling protocol.

SIP gateways and TelcoBridges

A TelcoBridges media gateway can be configured as a SIP gateway. The following example demonstrates how to configure a TelcoBridges media gateway to act as a SIP gateway between two SIP access points.

Note: Before proceeding, you must first have a live system running Toolpack and be able to configure it through the Web Portal. If this is not the case, see instructions for installing and configuring Toolpack or contact TelcoBridges' support team.

1. Unlock active configuration

This step allows you to directly modify the active configuration instead of having to create a copy and modify the copy before applying it. Please note that this should only be used for testing or development purposes. The active configuration should never be unlocked on a production system.

• Go to the System section and click on edit to modify the system parameters.
• Make sure the Lock active configuration checkbox is cleared and click Save.

2. Configure your adapter

• Go to the Hardware section and make sure your adapter is there with the right Serial Number.
• If your adapter is not there, click on Create New Hardware and complete the form.

3. Create the SIP stack

• Go to the SIP section and click on Create New SIP.
• Complete the form with default values and click Create.
• Click on Create New Transport Server and fill the form. Make sure to select the IP Interface that you want to use for your SIP signaling. Click Create.
• Click on Create New SAP, complete the form and click Create.
• Add the new Transport Server to your SAP.

4. Create the NAP for your incoming phone or SIP Proxy

• Go to the NAP section and click on Create New NAP.
• Enter a name and click Create.
• In the SIP Service Access Points area, add your SIP SAP to this NAP.
• In the newly added SIP Specific Params area, set the Proxy Address to the IP address of your incoming phone or SIP Proxy.
• If your phone or SIP Proxy does not support availability detection using the OPTIONS method, uncheck the box Poll Remote Proxy?.
• Click Save.

5. Create the NAP for your outgoing phone or SIP Proxy

• Go to the NAP section and click on Create New NAP.
• Enter a name and click Create.
• In the SIP Service Access Points area, add your SIP SAP to this NAP.
• In the newly added SIP Specific Params area, set the Proxy Address to the IP address of your outgoing phone or SIP Proxy.
• If your phone or SIP Proxy does not support availability detection using the OPTIONS method, uncheck the box Poll Remote Proxy?.
• Click Save.

6. Configure your Gateway routes to forward all calls from the incomfing NAP to the outgoing NAP

• Go to the Gateway/Configurations section and click on edit.
• Go down to the Editing Routes area and click on Create New Route.
• Select your incoming NAP for NAP and your outgoing NAP for Remapped NAP.

Note: You can create a route in the opposite direction as well by repeating the last 2 steps and inverting the incoming and outgoing NAPs.

7. Apply the new configuration

• Go to the System section and click on Edit to modify the system parameters.
• In the Activate configuration area, click on Activate.
• Verify that the new configuration was activated successfully and fix errors if any.

8. Do a test call

• Using your incoming phone (IP address of this host must be the one you use when configuration the incoming proxy in step 4), place a call to '123-4567@[SIGNALING_IP]' where [SIGNALING_IP] is the IP address of the port on which you configured your SIP Signaling at step 3.
• The gateway will forward the call to the IP address of the proxy you configured in step 5.