Zoiper, MicroSIP, Linphone and similar (PC)
Configure the SIP Trunk on Softphones
Register a desktop softphone on your PortalPBX extension or trunk using the same SIP details.
Note: Users normally register an extension of the PBX (not the trunk). Use the extension details we sent you or those in the panel. You can also use the WebRTC softphone in the browser, with nothing to install.
Before you start
- An installed softphone (Zoiper, MicroSIP, Linphone or another SIP client).
- Extension or trunk details: server, username and password.
- A headset with microphone is recommended.
Your trunk details
PortalPBX sends them when the trunk is activated. Replace each placeholder with your real value.
- SIP server (host or domain)
- <servidor-sip>
- Port and transport
- <puerto> · UDP / TCP / TLS
- SIP username
- <usuario>
- SIP password
- <contraseña>
- Assigned DID number(s)
- <DID>
- Authentication mode
- Registro / IP
- Enabled codecs
- G.711 (alaw/ulaw) · G.729*
* G.729 only if enabled on your trunk.
Step by step
- 1
Create a SIP account
In the softphone choose add SIP account (Zoiper: Settings → Accounts → Add; MicroSIP: Menu → Add account).
- 2
Fill in the details
Domain / server: <servidor-sip>. Username: <usuario>. Password: <contraseña>. Display name: your name. Transport: as indicated (UDP, TCP or TLS).
- 3
Codecs and network
Put G.711 alaw/ulaw first. Enable STUN or “keep alive” if your network needs it.
- 4
Test
Check the “Registered” status and make a test call to another extension and to an external number.
Recommendations
- Use cable or stable Wi-Fi; avoid VPNs that block UDP.
- Prefer TLS/SRTP if enabled on your account.
- Prefer G.711 alaw/ulaw; use G.729 only if it is enabled on your trunk and supported by your equipment.
- Disable SIP ALG on your router or firewall: it is the most common cause of one-way audio and dropped registrations.
Common errors
403 Forbidden
Wrong password or mistyped username (case, spaces).
Registrado pero sin audio
Firewall or SIP ALG. Try another network or enable STUN.
Need a hand?
We configure it with you, remotely
If the manual setup does not work, contact support or open a ticket. We review registration, routes, codecs and NAT with you through a secure remote session.