--- On Mon, 1/5/09, Alex Balashov <[email protected]> wrote: > A G.711u call takes about 80 kbps on the inbound media > stream and on the outbound one once framing, padding and > L2/L3 headers are factored in, as you well know. A decent > server doing Asterisk can handle a few hundred calls, so > with every additional server doing 300 concurrent calls you > are driving about an additional ~25 mbps in sustained > bandwidth! I mean sustained, not burst below the 95th > percentile. If you are paying, say, $40/meg on your > commitment, as opposed to burst overages, that's another > $1k/mo to handle another 300 calls, plus the amortised > expense of a new $500 server.
Remember that at these bandwidth levels you can get MUCH better deals than $40/meg. You can easily get half that and probably a lot less. > If your margins are that good (half a penny a minute) then > you can probably afford to screw around. Unfortunately, for > most VoIP ITSPs the margins are much thinner, especially for > wholesalers in domestic US48 LD. If you're making > 1/10th of a penny, you're only doing $5k/mo on 5 million > minutes. Out of that $5k you've got to pay your total > colo expense, your marginal bandwidth cost on 110 calls (10+ > meg commitment), power, salary, and all other business > expenses. I agree. If your margins are that low proxying the media is not a good idea. US48 per-minute is not good business for a VSP unless it's just a loss leader for other business like selling DIDs, international termination, etc. > $.001 is a lot closer to the margin many ITSPs are making > than $.005. I don't know any residential ITSPs that sell below 1 cent a minute. Even at 1 cent a minute your profit margin is between $.002-.007 a minute depending on where the user is calling. On average probably around $.004 or so. If you're making only $.001 a minute then either you're buying too high or selling too low. :) Either way - residential US48 pay-as-you-go by itself is bad business. You cannot sustain a business on that alone IMHO. -- Nitzan http://www.comparevoipproviderrates.com/ _______________________________________________ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-biz mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-biz
