Re: [AFMUG] Is anyone here doing ePTP at all?

[George Skorup]

OK so back to ePMP PTP. I had to put up a 500' link between two grain 
legs. Used integrated radios on 2.4.3. I tried ePTP, but they wouldn't 
link up. Thinking maybe too short? I don't know, so I just switched them 
to TDD PTP w/ flexible framing instead. Latency is like 15ms. I hate it. 
I have a couple other links still on 2.3.3 also doing flexible framing 
and latency is very consistently 7ms. Only thing I can think is that 
this new short link is on 5.4GHz and it's actually forcing fixed framing 
(even though it says flexible) because of DFS? Either that or something 
is very different between 2.3.3 and 2.4.3.

Anyway.. we were thinking about switching out a bunch of 5GHz Rocket 
links (because they cannot handle noise at all) with ePMP GPS. We get 
very good latency with the Rockets, typically under 3ms when the front 
ends aren't swamped, but I will NOT do 15-20ms with ePMP, that's just 
stupid. The whole idea was sync, and since ePTP doesn't sync.. not sure 
what to do. Maybe 2.5ms framing and 50/50 TDD will get me 7ms, and w/ sync?