How to setup Ozeki VoIP SIP SDK with VoIPtalk

For making VoIP calls first you need to sign up to the service of a service provider (or connect to a PBX). In this guide you will learn how to connect to VoIPtalk when you use Ozeki VoIP SIP SDK. After following this tutorial you will be able to make VoIP calls via VoIPtalk with the Ozeki SIP SDK effectively.

This setup guide explains in detail how you can use a SIP account provided by an Internet based VoIP telephone provider (namely VoIPtalk).

VoIP telephone service providers offer a telephone service over the Internet. They can forward calls to traditional telephone networks and to Internet users signed up to their network. When you sign up for the service, you will receive a SIP account (an IP address, a username and a password, plus some other details). To make voice calls from Ozeki VoIP SIP SDK, you need to configure the SIP account details.

Ozeki VoIP SIP SDK can be obtained
by clicking the download link below:
Download Ozeki VoIP SIP SDK!

After signing up for the service of VoIPtalk and following the configuration steps of this guide you will have a system that works in the way as Figure 1 demonstrates:

With the help of Ozeki VoIP SIP SDK you will be able to initiate VoIP calls from your application via the SIP account of VoIPtalk. Then calls can be forwarded toward mobile phones or any landline phones.

Figure 1 - VoIP calls via VoIPtalk with Ozeki VoIP SIP SDK

Step by Step Configuration

So it is assumed that you already have a registered account at

To start the configuration, open your browser and navigate to the website of VoIPtalk. At the frontpage, click on Login menu item in the menu (Figure 2).

login page
Figure 2 - Login page

Enter your email address and password in login window to sign into your VoIPtalk account (Figure 3).

log into your voiptalk account
Figure 3 - Log into your VoIPtalk account

After login, click on VoIPtalk ID to view your VoIPtalk SIP password (Figure 4).

click on voiptalk id
Figure 4 - Click on VoIPtalk ID

In the next window you can view your VoIPtalk ID and password (Figure 5). You will need these values during the configuration of Ozeki VoIP SIP SDK.

view your voiptalk id and password
Figure 5 - View your VoIPtalk ID and password

In SIP Account Settings tab of Ozeki VoIP SIP SDK you need to specify the following parameters:

User ID: Enter your VoIPtalk ID.
Register name: Enter your VoIPtalk ID.
Register password: Enter your VoIPtalk SIP password.
Display name: Enter your VoIPtalk ID.
Domain server: Enter
Outbound proxy: Enter

Finally, click on Register (Figure 6).

specify sip account settings
Figure 6 - Specify SIP account settings

After I have customized SIP account settings and the application is registered to VoIPtalk, I make a test call. In Phone Lines section the active phone lines can be seen. So I dial the phone number to be called and click on Pick Up (Figure 7).

test call
Figure 7 - Test call

Figure 7 demonstrates that after initiating a call there is a successful incoming call (Figure 8).

successful incoming call
Figure 8 - Successful incoming call

As a result, the state of the call will be changed to InCall. In Phone Calls section you can see the active phone calls (Figure 9).

call status changed to incall
Figure 9 - Call status changed to InCall

As you can see with only a few simple and quick steps you can setup VoIP functionality to your application by using Ozeki VoIP SIP SDK! For improving sound quality you can choose from various codecs. Click here for checking the supported codecs. For more features please check theData sheet.

Ozeki VoIP SIP SDK can be obtained
by clicking the download link below:
Download Ozeki VoIP SIP SDK!

For more information, please do not hesitate to contact us at

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