How to Register a SIP Account in Zoiper: Step-by-Step Guide

After signing up with CommPeak and getting your SIP account credentials, your next step is registering your SIP account in CommPeak Softphone, a third-party application, or with your IP phone to make your first call.

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You can also use the Built-in CommPeak Softphone with your JWT-enabled SIP accounts to place calls right from your browser. You can read more in the Built-in Softphone for JWT-Enabled SIP Accounts article.

Video tutorial

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With CommPeak Softphone, you get an enterprise-level tool without installing any third-party software.

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IMPORTANT
If you're using third-party SIP clients (not CommPeak's Softphone), you must manually enable SRTP (Secure Real-Time Transport Protocol) when using TLS for SIP transport. This ensures media encryption and compatibility.

To illustrate the steps required for a third-party softphone configuration, we will use Zoiper.

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IMPORTANT
Zoiper only supports SIP accounts that use password-based authentication with login credentials. IP-based SIP accounts are not compatible with Zoiper.

To register in Zoiper:

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NOTE
Zoiper is a softphone application available for Windows, macOS, and Linux, as well as Android and iOS. This is third-party software, which we are using for illustration only. Instead, you can install any other softphone available for downloading and configure it with your SIP credentials.

Install Zoiper

Download Zoiper from zoiper.com and install it on your device.

Start Zoiper

Start Zoiper.

Enter your credentials

Specify your SIP account credentials (username and password) in the start window and click Login.

Screenshot of specifying your SIP credentials in Zoiper — Specifying your Zoiper SIP account credentials

Enter the domain

In the next window, enter the domain (sip.commpeak.com) and click Next.

Screenshot of specifying your domain in Zoiper — Specifying your domain in Zoiper

Skip the next step

At the next step, click Skip.

Screenshot of the Authentication username step — Authentication and outbound proxy settings

Wait for the test

Now, wait until the program tests possible configuration options.
When SIP TCP or SIP UDP is marked in green, you can click Next and skip the test for IAX UDP.

Schreenshot of the step with testing possible configurations — Testing possible configurations step

Test audio and video

Click Configure to test your audio and video, or Skip to proceed without testing.

Schreenshot of the step with testing audio and video — Testing your audio and video

Finish the setup

Click Finish.

Screenshot of the Zoiper configuration success screen — Zoiper configuration success screen

Zoiper will open. Now, you can make your first call!

To dial a number, click the dialpad icon. Ensure a green mark is next to your username – it shows you are connected to the network.

Screenshot of Zoiper dialpad — Zoiper dialpad

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NOTE
If you are using a PBX and need to log in an agent, please refer to this article: Configuring a Device and Logging In to Third-Party Softphone.