One bad one on a CMM can cause problems for any or all too. On the CMMmicro the 24 volt power that feeds the Canopy radios is all tied together so a short can cause a problem for all or any radio in the cluster. We still use the 300ss at customer locations so we are not liable for their equipment getting damaged and we run the risk of losing our own equipment but have no other choice. After removing all the suppressors at all the POP’s everything is running fine. His recommendation was to use shielded cable and connectors and not to use the surge suppressor. The shielded cable and connectors has been known to cause the suppressor to trip. We talked to a Motorola Engineer on the design team of the 300ss who acknowledged there is a problem especially if you use a suppressor and shielded cable and connectors. I have tried the Motorola 300ss, 300ss verB, Transtector, Hyperlink, and others with no success. The cause turned out to be the CAT 5 surge protection. After searching and searching latency really never was an issue, packet loss and jitter were. Anyway this is already getting longer then it should so ill get to the point. All installations were done per Motorola specs and considering we are a Motorola MSS service center and Mobile VAR all work that we do for Motorola must meet R56 standards and it has become standard practice. I guess my point is all bases were covered I thought. Rf is our main business and I am pretty much a perfectionist when it comes to installation and equipment so there is no shoddy work but I am just one person, and yes I do screw up occasionally. It charts the latency, packet loss, and network jitter on a graph making problems much more visible. Using a tool like ping plotter or what I use is Solarwinds enhanced ping. A standard command prompt ping -t test might not show any issues and if any of the traffic is UDP with no retransmit or accountability capabilities you really notice especially with a congested link when the UDP has to fight for space with TCP. Latency, packet loss, network jitter all have to be low to nonexistent. Most of the issues we have had really wouldn’t be noticed with internet traffic, but with full duplex audio and video you will. This is how you find out how good your network really is. My thinking on it was that if a T1 could handle it so could Canopy and for the most part it has. All video feeds link to a special switch at one of the college’s that allows them to control witch schools participate in certain classes. They are using video conference equipment at each school. This allows them to provide classes that they normally would not be able to provide due to low enrolment. The regional school district is made up of 8 smaller municipal school districts in 8 towns and 2 college branches in our area that we had POP’s located in. previously they were paying around $900 a month per connection for a single T1. About six months ago we approached one of the regional school district’s in our area about providing connectivity to the schools for their video classroom courses.
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