Tested Outdoor Unit

  • SIPSKYLINE (FERMAX confirmed that SIPMARINE panels are internally identical to SIPSKYLINE)

Only the outdoor unit was used in the test

SETUP: SKYLINE 3V S4 was connected to the local test network via a POE switch that was grounded (connected to earth wire). The OPUS device was also connected to the same network in a different room.

OPUS Audio Configuration

  • SIP Speaker scaling 8
  • SIP Microphone scaling 20
  • Voice 80%

SIP Setup

Fermax unit doesn't have an internal SIP server. We have tested with our SIP server (UNIFY Openscape business ) as the external SIP server.
We also tested early media with a YeaStar SIP server but early media didn't work. Early media works with direct SIP.



The sound is OK


DTMF was found working to open the door.


Available URL's

Table of contents:

Switch Language

Technical Handbook:

Internal documentation

TT School