Справочник Пользователя для Pelco C2908M-B
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C2908M-B (4/05)
PelcoNet uses the MPEG-4 industry standard for video teleconferencing over the Internet. It provides the most effective use of bandwidth
with excellent video quality.
with excellent video quality.
13. I do not get live video in the browser but server push is working. What could be wrong?
Verify that the ActiveX plug-in is installed and that your video is set to 16-bit color. Also check with your network administrator to verify that
the TCP/IP ports PelcoNet uses are not being filtered and that you have enough bandwidth.
the TCP/IP ports PelcoNet uses are not being filtered and that you have enough bandwidth.
14. How do I program PelcoNet with HyperTerminal?
Using a null modem cable, connect a COM port on your PC to the RS232/422/485 port on PelcoNet. Open HyperTerminal and set the port to
use 19200, 8, N, 1 and No Flow Control. Type ?, and follow the help menu.
use 19200, 8, N, 1 and No Flow Control. Type ?, and follow the help menu.
15. How much bandwidth does PelcoNet use?
PelcoNet’s bandwidth is adjustable. You can set it from 9.6 kbps up to 5000 kbps. PelcoNet recommends a minimum of 250 Kbps for live
video at medium image quality. Check with your network administrator for how much bandwidth to use.
video at medium image quality. Check with your network administrator for how much bandwidth to use.
16. Can I use PelcoNet with a DSL or cable connection?
Yes. You will need a static IP address from your provider. Also verify what kind of bandwidth you will get since it varies by location. Verify
that your provider is not filtering the TCP/IP ports that PelcoNet uses.
that your provider is not filtering the TCP/IP ports that PelcoNet uses.
17. Is an RS-232 to RS-422/485 converter required for control with PelcoNet?
No. the NET300’s RS232/422/485 port supports RS-232, RS-422, and RS-485.
18. What TCP/IP ports should I use with PelcoNet?
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If you will be using PelcoNet in a LAN environment, Pelco recommends all TCP/IP ports above 1024 be opened. Also, if you will use a
time server, TCP port 37 must be opened.
time server, TCP port 37 must be opened.
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If you will be using PelcoNet in a WAN environment, Pelco recommends changing the “Video transmission” setting to “TCP” in the
Network Settings configuration page. This makes PelcoNet use port 80 and whatever source port the client computer chooses.
Network Settings configuration page. This makes PelcoNet use port 80 and whatever source port the client computer chooses.