ZoIPer Softphone Setup

🧭 How to Set Up Zoiper 5 Softphone for Your PBX Account

This guide will walk you through configuring Zoiper 5 on your desktop or mobile device to connect to your company’s PBX system. Download the ZoIPer App free version from here: https://www.zoiper.com/en/voip-softphone/download/current.

🔹 Step 1: Create or Identify Your Extension

Before beginning, make sure you have received your SIP account details from the PBX administrator or support ticket.
You will need:

PBX Host / Domain: yourpbx.openip.us:5061
Outbound Proxy: yourpbx.openip.us:5061
Username: your extension number (e.g., 100)
Password: your SIP password (provided in the ticket)

🔹 Step 2: Add a New Account

Open Zoiper 5.
Go to Accounts → Add account.
When asked “Do you already have an account?” select Yes.
Choose Manual configuration.
For Account type, select SIP.

🔹 Step 3: Enter Account Details

In the account creation window, fill in the following fields:

Field Value

Account name Any friendly name (e.g., “My PBX 1126”)

Host / Domain yourpbx.openip.us:5061

Outbound proxy yourpbx.openip.us:5061

Username Your extension number

Auth username Same as username (if present)

Password Your SIP password

Click Save once all fields are completed.

🔹 Step 4: Set Transport to TLS

After saving, open the new account settings and change the transport protocol:

Go to Accounts → [your account] → Network settings → Transport = TLS,
OR
Accounts → [your account] → Additional settings → Network settings → Transport = TLS

This ensures your connection uses secure SIP over TLS (port 5061).

🔹 Step 5: Configure TLS Security

Navigate to Settings → Advanced → Security → TLS Options and set:

Protocol Suite = SSL v2/v3

🔹 Step 6: Enable SRTP (Encryption)

Turn on voice-encryption settings:

ZRTP → Enable ZRTP = OFF
SRTP → SDES Negotiation = ON

Your final Encryption section should look like:

Encryption: ZRTP → OFF SRTP → ON (SDES Negotiation)

🔹 Step 7: Verify Registration

If all settings are correct, Zoiper will attempt to register your account.
Within ~30 seconds, a green check mark should appear next to your account name.

✅ Green check mark = Registered successfully
❌ No green check mark = Registration failed (check credentials, host, or network)

🔹 Step 8: Ready to Use

Once registered:

You can make and receive calls through your PBX.
The call status should show Registered under the account list.

🛠 Troubleshooting Tips

Double-check that your internet allows outbound SIP TLS (port 5061).
Ensure the PBX credentials are correct.
If registration still fails, contact your system administrator with a screenshot of your account settings.