Set up your office line in MicroSIP or Linphone

Your administrator gave you a phone line. You got an email or SMS with three details: the domain, the username and the password. Keep them at hand.

1. Install MicroSIP. Download it free from microsip.org/downloads and install it on your Windows computer.

2. Add your account. Open MicroSIP. Click the small arrow ▾ at the top right and choose Add Account.

3. Fill in your details.

   MicroSIP field	What to enter
   Account Name	Anything, e.g. Office
   SIP Server	The domain
   SIP Proxy	Leave empty
   Username	The username
   Domain	The domain (same as SIP Server)
   Login	The username (same as Username)
   Password	The password

4. Save. Click Save. In a few seconds the status at the bottom says Online. Call a coworker’s extension to test.

That’s it. Coworkers reach you on your extension, and calls to your line ring in MicroSIP.

On a Mac: Linphone

MicroSIP runs only on Windows. On a Mac, use Linphone with the same three details.

1. Install Linphone. Download it free from linphone.org/en/download and install it.

2. Add your account. Open Linphone and choose Use a SIP account.

3. Fill in your details. Username = the username, Password = the password, Domain = the domain. Transport: UDP.

4. Log in. In a few seconds the account shows as connected. Call a coworker’s extension to test.

Other phones and apps

Zoiper, Linphone, Grandstream and other SIP phones use the same three details: server / domain = the domain, username and auth ID = the username, password = the password. UDP or TCP on port 5060, TLS on 5061.

Troubleshooting

MicroSIP stays Offline or shows 401 / 403

Check each field again. The most common mistakes are a different value in Username and Login, or a typo in the domain. If your administrator regenerated the password, the old one stops working: ask for the new one.

Audio goes one way only: I can't hear them, or they can't hear me

Turn on STUN in the phone’s account or network settings and enter the server stun.l.google.com:19302. You only need this when audio goes one way; it is the usual fix when your phone is behind a router. Also allow MicroSIP through the Windows firewall when Windows asks. On a company network, ask IT to allow SIP (5060-5061) and audio (UDP) traffic.

I lost the email

Ask your administrator to send it again.

For administrators

Telephony - Active directory, click the phone icon next to the person and switch Device access on. Under Send the setup, click Email or SMS. The person gets these steps with their details filled in. See Users, seats and devices.