Door Opening feature (Pulse)
From Zenitel Wiki
During conversation with the Door Intercom Station, the integrated relay of the door station can be operated by pressing digit "6" on the phone. As the Door Stations by default are configured to trigger on DTMF "6", no special configuration is required for the Door Opening feature.
If there is a need to restrict which stations should be allowed to do Door Opening, this can be configured via Station Profiles.
Note: If the Door Station is of the INCA family, and has firmware 2.3.x.x or earlier, the DTMF methode must be set to SIP INFO in the ITSV-1 phone. Go to Account 1 > Codec Settings, and check DTMF via "SIP INFO":