Yeah, but if you are doing international the quality issue you are introducing by being in the media path becomes of greater importance.
On Jan 5, 2009, at 3:39 PM, Nitzan Kon <[email protected]> wrote: > --- 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 _______________________________________________ --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
