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Zoiper SIP setup: add your ZuteSIP account to Zoiper 5

Updated 2026-09-30 · By the ZuteSIP team (ZuteSIP Inc.)

Short answer: To set up a Zoiper SIP account, open Zoiper 5, choose to add an account, enter your ZuteSIP SIP username and password, and use sip.zutesipdialer.com as the domain. Zoiper then registers on port 5060, and your real phone number can make and receive calls on desktop or mobile.

Zoiper 5 is a free-to-start softphone available for Windows, macOS, Linux, Android and iOS, which makes it a convenient way to carry one ZuteSIP number across a laptop and a phone. This guide covers the account wizard, manual settings and the fixes for the usual problems.

What you need

  • A ZuteSIP number that is active in your dashboard.
  • The number's SIP username and password, shown on that number's page.
  • Zoiper 5 installed from the vendor's download page.
  • An internet connection that allows SIP (port 5060 or 5061) and RTP media.

Zoiper SIP account settings

Zoiper's wizard asks for a login and a password first, then a hostname. If you enter the username in the form user@domain, Zoiper fills in the domain for you.

SettingValue
SIP server / domain / registrarsip.zutesipdialer.com
Username / auth ID<SIP_USERNAME> (from the number's page in the dashboard)
Password<SIP_PASSWORD> (from the same page)
Transport and portUDP 5060 (default), TCP 5060 or TLS 5061
CodecsG.711 µ-law (PCMU) and A-law (PCMA)
AuthenticationSIP digest, per-number username + password
DTMFRFC 2833 (RTP events) or SIP INFO
Outbound proxyLeave empty

Step-by-step: add the account

  1. Open Zoiper 5. On first launch it shows the account setup screen; later you can reach it from the settings area by choosing to add a new account.
  2. Enter <SIP_USERNAME>@sip.zutesipdialer.com as the login and <SIP_PASSWORD> as the password, then continue.
  3. Confirm sip.zutesipdialer.com as the hostname or provider domain.
  4. Skip the optional authentication username and outbound proxy fields; leave them blank.
  5. Let Zoiper test transports. Pick SIP over UDP if it succeeds, or TCP/TLS if your network blocks UDP.
  6. Finish the wizard and check that the account shows a green or registered status.
  7. In the account's audio codec settings, make sure G.711 µ-law and A-law are enabled and at the top of the list.

Desktop vs mobile: what differs in Zoiper

On Windows, macOS and Linux, Zoiper keeps a steady registration as long as the program runs, so it behaves like a desk phone. Pick your headset as the input and output device in the audio settings, and run the built-in audio test before the first real call.

On Android and iOS, the account fields are identical but the operating system decides when the app may stay awake. Test an incoming call with the app closed before you rely on it. If the phone is your main device and calls are missed in the background, compare Zoiper's mobile options with a push-oriented app such as Groundwire.

Whichever version you use, Zoiper's account list lets you store several ZuteSIP numbers side by side. That is useful when you keep a US number for clients and a UK number for suppliers, for example, and want to choose which one appears on each outgoing call.

Receiving calls

Once Zoiper is registered, calls to your ZuteSIP number ring in the app. On Android and iOS the operating system may pause background apps, so check Zoiper's own options for push or background mode if calls only ring while the app is open.

If you run Zoiper on two devices with the same credentials, only the most recent registration may receive calls reliably. Use call forwarding from the dashboard if you also want calls on an ordinary phone.

Outbound caller ID

Calls you place from Zoiper show the ZuteSIP number whose credentials you entered. Dial in international E.164 style (country code first) for the most reliable routing. To call from a different number, add a second account in Zoiper with that number's credentials and pick it before dialing.

Troubleshooting Zoiper

  • 401 or 403 on registration: re-copy the password from the dashboard (no trailing spaces) and make sure the username field has no extra prefix.
  • One-way or no audio: NAT is usually the cause. Enable STUN in Zoiper's network settings or try TCP transport so the media path is set up correctly.
  • Call connects but is silent or drops at once: a codec mismatch. Leave only PCMU and PCMA enabled and test again.
  • Menus don't react to key presses: set DTMF to RFC 2833 in the account options, or to SIP INFO if the far end expects it.

Frequently asked questions

Is Zoiper free to use with ZuteSIP?

Zoiper offers a free version and paid upgrades; check the vendor's site for current tiers. The ZuteSIP SIP credentials are included with your number.

Can I use the same number in Zoiper on my phone and laptop?

You can, but for dependable inbound ringing keep one registration active at a time, or forward calls to a second phone from the dashboard.

Which port should Zoiper use?

UDP or TCP 5060 works for most people. Use TLS on port 5061 if your network interferes with plain SIP.

Why does Zoiper show 'Registration failed'?

Almost always a mistyped username or password. Copy both again from the number's page and re-enter them.

Can Zoiper send SMS through my ZuteSIP number?

Sending and reading SMS is done in the dashboard SMS inbox; the SIP account in Zoiper is used for calls.

Where do I change the codec order in Zoiper?

Open the account's settings and look for its audio codecs list; move G.711 µ-law and A-law to the top and disable others while testing.

Related pages

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