From version 2.4 up, 2N® LiftIP enables video to be transmitted from a properly configured camera during alarm calls. From the lift cabin, for example. Use parameters 1120–1122 for activation. The video signal is transmitted via the H.264 codec. The call is set up as an audio call first with a video option and, after confirmed by the counterparty, RTP gets reconfigured and video is retransmitted from the defined camera.
Make sure that such relevant video parameters as Payload type and Packetisation mode are set correctly for all the networks elements, i.e. camera, intercom, end terminal and SIP Proxy if necessary, to make the function work properly. The device only supports Packetisation mode 1!
Video stream settings:
- 1120 – enter the stream RTSP address from the selected IP camera (e.g. rtsp://10.0.25.215/onvif-media/media.amp).
- 1121 – set the user name for camera RTSP transmission authentication.
- 1122 – set the password for camera RTSP transmission authentication.
Some cameras do not allow video to be played until the user is authenticated; refer to parameters 1121 and 1122. You need not complete these parameters if you are equipped with a camera that enables stream without authentication.
- Make sure that the IP camera supports the H.264 codec.
- Make sure that the video call receiving phone supports the H.264 codec too.
- Make sure that the PBX supports the H.264 codec when calling via a SIP Proxy.
- Video calls have been tested with AXIS cameras (M1054, M3004).