Network Delay
When the client acquires JPEG via TCP, the camera will send out data while checking the ACK from the client at the same time. For networks with considerable delay, data cannot be sent out until ACK is received, and therefore the frame rate will drop. In the case of MPEG4, noise interference may occur and playback may fail.
Decrease in the frame rate due to network delays can be eliminated by receiving data via multicast.
Network Jitter
When there is considerable network jitter, delay time may be prolonged and the image frame rate may drop. In the case of MPEG4, noise interference may occur and playback may fail.
Packet Loss
When acquiring images from this unit via TCP, packet loss may be recovered by TCP retransmission. When there is considerable delay in the network, however, missing data may occur and the image frame rate may drop. In the case of MPEG4, noise interference may occur and playback may fail.
When packet loss occurs during multicast sending from this unit, the image frame rate may drop. In the case of MPEG4, noise interference may occur and playback may fail.
List of Protocols and Port Numbers Used by this unit
This unit uses the protocols and port numbers listed below. Ensure that these ports are allowed through the firewall when a firewall is to be installed.
Protocol/Port No. | Purpose of Use |
|
|
Source |
|
|
|
TCP/80 | JPEG/MPEG4 server, |
| Web Settings page, API |
|
|
TCP/5510 | VSIP |
|
|
TCP/10020 | (Reserved for |
TCP/10021 | adjustment) |
TCP/10023 |
|
|
|
TCP/32040 | Alarm Server |
|
|
Destination |
|
|
|
TCP/20, 21 | FTP |
|
|
TCP/25 | Mail delivery |
|
|
TCP/110 | POP (Mail Delivery) |
|
|
TCP/User Setting | Sending alarm |
No. |
|
|
|
UDP/123 | SNTP |
|
|
UDP/5510 | VSIP |
|
|
UDP/9541 | VSIP discovery protocol |
|
|
UDP/User Setting | Sending alarm |
No. |
|
|
|
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