How to setup Ozeki VoIP SIP SDK with PBXnSIP

This guide explains how you can connect Ozeki VoIP SIP SDK to your PBXnSIP server. All you need to do is to create an extension in PBXnSIP and Ozeki VoIP SIP SDK can use this extension to register to the PBX.

Voice Over IP is one of today's fastest growing technology. It makes it possible to create an advanced telephone application based on the existing network. VoIP technology is based on converting the voice into packets and transmits these packets towards the destination.

This page explains you how to connect Ozeki VoIP SIP SDK to your PBXnSIP server.

System architecture

If you follow the configuration steps of this guide, you will have a system that works as follows: First, you need to login to your PBXnSIP server using its web interface and create an extension. Ozeki VoIP SIP SDK will use this extension to register to the PBX. After registration you can start to reach your customers immediately. Figure 1 shows the overview of the system.

ozeki voip sip sdk connected to pbxnsip server
Figure 1 - Ozeki VoIP SIP SDK connected to PBXnSIP server

  • Ozeki VoIP SIP SDK registers to PBXnSIP server.
  • The outgoing call will be forwarded to PBXnSIP via the created extension.
  • The destination phone will be ringing. The destination phone could be a VoIP phone, a land-line phone or a mobile phone.

Configuration steps

Before you start to configure this solution it is assumed that you have already installed PBXnSIP into your server.

Step 1.) Configure PBXnSIP

In this example I have installed PBXnSIP to a computer that has the following IP address: Start a browser and navigate to its built-in web interface and login as administrator (Figure 2).

login as admin
Figure 2 - Login as administrator

Once you logged in, click on Accounts (Figure 3)

click on accounts
Figure 3 - Click on Accounts

Here you can see the created Extensions. I have already registered an extension which name is 100. I will register a VoIP phone to this account. Click on Create to create a new extension (Figure 4).

click on create
Figure 4 - Click on Create

Here you can create new accounts. Provide a Number and a SIP Password and click on Create (Figure 5).

create new extension
Figure 5 - Create new extension

On Figure 6 you can see the created extension.

created extension
Figure 6 - Created extension

If you followed these steps, the configuration of PBXnSIP is done, and you can start to configure Ozeki VoIP SIP SDK.

Step 2.) Configure Ozeki VoIP SIP SDK

It is assumed that you have already downloaded Ozeki VoIP SIP SDK from the download page and installed it.

The SDK installation comes with a Demo Application. Start the Demo Application and provide the details of the created extension and click on Register (Figure 7).

register to pbxnsip
Figure 7 - Register to PBXnSIP

You can see the registered phone line at the Phone Lines section. Dial a number using the featured softphone of the Demo Application and click Pick up (Figure 8).

dial an extension
Figure 8 - Dial an extension

You can see there is an incoming call from Ozeki VoIP SIP SDK in the destination phone (Figure 9).

incoming call from ozeki voip sip sdk
Figure 9 - Incoming call from Ozeki VoIP SIP SDK

The phone call can be seen at Phone Calls section (Figure 10).

active phone call
Figure 10 - Active phone call


If you followed these steps you can start to build your own application with Ozeki VoIP SIP SDK and PBXnSIP.

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