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Comment: CudaTel (Score 1) 224

by mrmagos (#41551963) Attached to: Ask Slashdot: Open Communications Set-Up For Small Office?
CudaTel (of Barracuda spam firewall fame) appliances are built on top of Freeswitch, an open-source PBX that I've found scales much better than Asterisk. The hardware is sized by number of concurrent calls. If you don't know how many concurrent calls you handle, the accepted convention is to take the number of phones you have and divide by 6 (or 4 if you want to be very conservative).

Comment: Re:EE (Score 1) 296

by mrmagos (#37297362) Attached to: Ask Slashdot: Best Second Major For a Mechanical Engineer?
I would agree with this. Although, since you're considering CS, you may want to see if your school offers a Computer Engineering program. CompE is a mesh of EE and CS, and would be well-suited toward developing controllers, monitors, firmware, etc. for advanced (hybrid, etc.) drive systems. Alternatively, since you're interested in alternate forms of energy, ChemE may be a suitable match as well.

Comment: Wrong assumptions (Score 5, Informative) 251

by mrmagos (#37002638) Attached to: Ask Slashdot: Overcoming Convention Hall Wi-Fi Interference?
Given this:

In the days leading up to the opening of the trade show, W-iFi connections are reliable and work as expected. However, as soon as the show opens none of our devices can reliable maintain a Wi-Fi connection to the router.

I doubt it's this:

I'm sure it is likely that there are poorly insulated electrical cabling, fluorescent lighting, and other issues that would contribute to Wi-Fi interference in the convention hall.

...and more likely this:

A quick scan shows dozens and dozens of discoverable Wi-Fi networks nearby.

I would recommend trying a few things:
- Reduce your RTS threshold, if your AP supports it.
- Reduce the fragmentation threshold, if your AP supports it.
- Play with data rates, reducing them if your AP supports it.

If your AP does not support any of those options, go out and get a real AP.

Comment: Re:Stability (Score 1) 305

by mrmagos (#35977048) Attached to: RIM Collapse Beginning?
The "won't sync" issue is not unique to Blackberry devices; I've seen the same issue with Android devices and iPhones, albeit much, much less often. Popping the battery out usually helps with Android phones, though you can't do that with an iPhone - you need to completely remove the account info, power down the device, then enter the account info back in before the ActiveSync connection can be reestablished.

Asynchronous inputs are at the root of our race problems. -- D. Winker and F. Prosser