I have Avaya 9641G IP Phone wich reports "No Ethernet" on the screen during initial start. I have intention to trace an Ehternet signal from the very input RJ45 jack throuth the phone mptherboard to the Broadcom communication CPU input pin.
Need youe advice how to: first I have suggested to buy an oscilscope, but not sure what to select, the pro version may become too expencive, and basic version may not capture high frequesncy signal. I really don't what to spend a fortune just for the pleasure to see the Ethernet frames. I also considered to measure just an AC voltage at the Ethernet cable pair... but with lack of experience I finaaly decided to ask experts. So, what would you suggest to visualize and track Ethernet phisical signal flow over the phone mother board?
Need youe advice how to: first I have suggested to buy an oscilscope, but not sure what to select, the pro version may become too expencive, and basic version may not capture high frequesncy signal. I really don't what to spend a fortune just for the pleasure to see the Ethernet frames. I also considered to measure just an AC voltage at the Ethernet cable pair... but with lack of experience I finaaly decided to ask experts. So, what would you suggest to visualize and track Ethernet phisical signal flow over the phone mother board?
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