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| 02:44.22 | MonMotha | wasn't there someone in here who hacked around with Asterisk? |
| 02:44.54 | prpplague | MonMotha: file did some work ages ago iirc |
| 02:45.01 | MonMotha | hum... ok |
| 02:45.04 | prpplague | MonMotha: not sure what he does these days |
| 02:45.17 | MonMotha | I'm attempting to do something with it...maybe |
| 02:45.23 | MonMotha | not sure if it's worth the hair loss or not |
| 02:57.30 | dalias | isn't there some light embedded sip library? :) |
| 02:57.42 | dalias | pjsip yeah |
| 02:58.58 | MonMotha | well, this isn't actually an embedded application |
| 02:59.06 | MonMotha | I really do want a PBX for a small business |
| 02:59.21 | MonMotha | it's just a question of at what point is it worth losing my hair to set it up |
| 03:00.43 | dalias | :) |
| 03:00.50 | dalias | i want to learn asterisk too |
| 03:02.17 | MonMotha | it's a complicated beast |
| 03:02.20 | MonMotha | but then it does a lot |
| 03:02.40 | dalias | but it wouldn't really shine unless i also made the effort to develop a giant infrastructure in integrate it with other business operations (e.g. automatically associating caller id with client accounts, integrated outgoing calls (and sms) to clients, etc.) |
| 03:03.27 | dalias | just using it in place of pstn would purely be a cost-saving measure for some crappy amount (~$100/mo) |
| 03:04.26 | dalias | hey here's a fun related question/thought experiment... |
| 03:05.08 | dalias | i'm in the us where we use stupid frequency bands different from the rest of the world (i.e. 850 mhz rather than 900 mhz) for gsm |
| 03:05.35 | MonMotha | actually, what's funny is that with LTE, Europe is the oddball |
| 03:05.44 | MonMotha | pretty much everybody except Europe is running LTE on 700MHz |
| 03:05.54 | dalias | and the 900 mhz bands (standard gsm) are legal for low-power use for home "cordless" phones, wifi, etc... |
| 03:06.14 | MonMotha | yeah, though there are also restrictions on the nature of the usage |
| 03:06.25 | MonMotha | I don't think that running your own cell system would be acceptable |
| 03:06.38 | dalias | so does that mean i could make a legal low-power (i.e. in-home/in-building) gsm network on the 900 mhz band |
| 03:06.42 | MonMotha | though you may be able to pull it off under the amateur radio service (with all the restrictions that come with that), and amateurs are licensed on most of 900MHz |
| 03:07.01 | dalias | and use asterisk to link it to the real phone system? :) |
| 03:07.47 | MonMotha | I also question whether you'll be able to set up a usable GSM system using off the shelf equipment and have it comply with the power limitations of Part 15, let alone if you'll meet the other rules (which can be fairly weird) |
| 03:08.13 | MonMotha | in addition to power, Part 15 often has limits including acceptable modulation types, intended usage, etc. |
| 03:08.37 | MonMotha | the rules that define the means under which wifi operates are like 25 pages long |
| 03:09.00 | dalias | ) |
| 03:09.01 | dalias | :) |
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| 08:07.28 | SpeedEvil | MonMotha: err - it's not under part 15 |
| 08:07.42 | SpeedEvil | 900 - in the US - is a ham band |
| 08:07.47 | SpeedEvil | err |
| 08:07.50 | SpeedEvil | do I mean ISM |
| 08:07.56 | SpeedEvil | IT's not part 15 anyway |
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| 12:44.42 | MonMotha | SpeedEvil: you sure it's not part 15 also? Communications are not usually permitted under ISM usage. |
| 12:44.49 | SpeedEvil | umm |
| 12:45.05 | SpeedEvil | In principle, I need to reread the part 15 regs. |
| 12:45.08 | MonMotha | the ISM and part 15 bands often happen to overlap |
| 12:45.22 | SpeedEvil | Might it have been ham? |
| 12:45.33 | MonMotha | ISM usages are things like microwave ovens |
| 12:46.01 | SpeedEvil | In another channel, we're using 10mW 433 transmitters to go 500km. :) |
| 12:46.02 | MonMotha | well, there is certainly a 900MHz (ish) amateur (ham) band. It's at least partially shared with a part 15 allocation. |
| 12:46.23 | MonMotha | 500km on 10mW on 433MHz? That's impressive |
| 12:46.31 | SpeedEvil | On balloons. |
| 12:46.41 | SpeedEvil | 50bps fsk at 400hz or so |
| 12:46.55 | MonMotha | ah, ok |
| 12:46.59 | SpeedEvil | Recieved on a SSB reciever acting as a downconverter to a soft-modem. |
| 12:47.24 | MonMotha | pretty light modulation and lots of altitude |
| 12:47.30 | MonMotha | I'm guessing decent antennas, too? |
| 12:48.00 | SpeedEvil | Quite funky - we've got a distributed listener setup, where up to a dozen listners have recieved each balloon - each site posts to a tracker site, which produces a nice shiny map, with overlayed live prediction of flightpath. |
| 12:48.12 | SpeedEvil | From a dipole up to dozen element yagis. |
| 12:48.46 | SpeedEvil | Currently, people are wondering about mesh networks built around the cc10* parts. |
| 12:49.55 | MonMotha | I've thought about deploying 802.16 on an amateur band as a fancy repeater |
| 12:50.50 | MonMotha | being able to use real amounts of power is handy :) |
| 12:53.54 | SpeedEvil | Annoyingly, in hte UK, you can't use other than ISM airborne. |
| 12:54.00 | SpeedEvil | No ham. |
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| 13:47.04 | MonMotha | SpeedEvil: there's an amateur radio service in the UK |
| 13:47.16 | MonMotha | now, I assume it has limitations similar to the service in the US |
| 13:47.43 | MonMotha | but I've talked to plenty of Brits on HF |
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| 14:05.29 | SpeedEvil | Err - no. |
| 14:05.35 | SpeedEvil | You can't use it in the air. |
| 14:05.51 | SpeedEvil | (at least if you're not with the transmitter, I'm unsure of use on planes) |
| 14:06.02 | SpeedEvil | but for the case on balloons or UAVs, it's ISM only |
| 14:13.46 | MonMotha | oh...interesting |
| 14:14.15 | MonMotha | there are specific rules regarding the use of in-air amateur communications in the US, but it's certainly permitted |
| 14:14.46 | MonMotha | I'm not really too familiar with the UK regs, but "ISM" in the US almost never permits communications; but the bands are almost always overlapping with part 15 bands, so people confuse them |
| 14:15.07 | MonMotha | ISM is for things like medical imaging, induction heating, etc. |
| 14:16.26 | MonMotha | I know I've talked on UHF with people in baloons in the US in the amateur service, but they were physically present in the baloon. I'm not sure if automatically controlled stations are permitted. |
| 14:16.32 | MonMotha | Actively remote controlled stations probably are, though. |
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| 14:17.00 | MonMotha | (given that people use it for remote controlled model planes all the time and put cameras on them) |
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| 14:25.21 | SpeedEvil | In the US - APRS is OK,. |
| 14:25.26 | SpeedEvil | In the air, and commonly used. |
| 14:25.29 | SpeedEvil | In the UK, it's not. |
| 14:25.34 | SpeedEvil | (for balloons) |
| 14:34.59 | MonMotha | ok, sounds like your regs on in-air are fairly different from ours |
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