What is VoIP?
VoIP (Voice over IP) allows you to make phone calls via your internet connection. MaxiConnect provides SIP (Session Initiation Protocol) lines compatible with the majority of IP phones, softphones and phone systems available on the market.
MaxiConnect SIP parameters
To configure your equipment, you will need the following information. These credentials are provided by MaxiConnect when your line is opened.
| Parameter | Value |
|---|---|
| SIP server (Registrar) | Provided by MaxiConnect |
| SIP port | 5060 (UDP/TCP) |
| Secure SIP port (SIPS) | 5061 (TLS) |
| Username | Your phone number |
| Password | Provided by MaxiConnect |
| Domain (Domain/Realm) | Provided by MaxiConnect |
| Outbound proxy | If required, provided by MaxiConnect |
| Registration interval | 3600 seconds |
To obtain your SIP credentials, log in to your customer account at my.maxiconnect.ch or contact our support.
Supported audio codecs
MaxiConnect supports the following codecs, in order of preference:
| Codec | Quality | Bandwidth |
|---|---|---|
| G.722 | HD Voice (very high quality) | ~80 Kbps |
| G.711 PCMA (A-law) | Standard | ~90 Kbps |
| G.711 PCMU (µ-law) | Standard | ~90 Kbps |
| G.729 | Compressed (low bandwidth) | ~24 Kbps |
Configuration by equipment type
IP phones (Yealink, Fanvil, Grandstream, Cisco)
The procedure is similar for all these devices:
- Access the web administration interface (phone’s IP address in your browser)
- Go to Account → Account 1 (or line 1)
- Enable the account
- Enter the SIP parameters above
- Save and restart the phone
Softphone (Zoiper, Linphone, 3CX Desktop)
- Open the softphone
- Add a new SIP account
- Enter your SIP credentials
- Test by making a call to a test number
Phone system (IPBX, 3CX, FreePBX, Asterisk)
Refer to the dedicated guide → Configuring MaxiTrunk in 3CX
Recommended network settings
To ensure call quality:
- QoS (Quality of Service): Enable QoS on your router by prioritising SIP traffic (port 5060) and RTP (ports 10000–20000)
- NAT: If you are behind a NAT, enable STUN or SIP ALG on your router
- Firewall: Open UDP ports 5060 (SIP) and 10000–20000 (RTP)
Testing your line
To test your line once configured, make a call to:
- Your own number from another phone to check ringing
- An external number to verify outbound calls
Technical support: +41 58 521 32 00 — hello@maxiconnect.ch