Vivotek IP8352 manual Users Manual

VIVOTEK

Multicast settings for stream 1 ~ 4: Click the items to display the detailed configuration information� Select the Always multicast option to enable multicast for stream 1 ~ 4�

Unicast video transmission delivers a stream through point-to-point transmission; multicast, on the other hand, sends a stream to the multicast group address and allows multiple clients to acquire the stream at the same time by requesting a copy from the multicast group address� Therefore, enabling multicast can effectively save Internet bandwith�

The ports can be changed to values between 1025 and 65535� The multicast RTP port must be an even number and the multicast RTCP port number is the multicast RTP port number plus one, and thus is always odd� When the multicast RTP port changes, the multicast RTCP port will change accordingly�

If the multicast RTP video ports are incorrectly assigned, the following warning message will be displayed:

Multicast TTL [1~255]: The multicast TTL (Time To Live) is the value that tells the router the range a packet can be forwarded�

62 - User's Manual