>>
>> That depends a bit on the streaming technology. If you use
>> unicast, the equetion is: 2000 * 128 kbps = 256 Mbps
>> If your users can use multicast, you need 128 kbps.
>
> I believe it would be multicast since all users are listening to the
> same song at the same point in the song. Just like an over-the-air radio
> works. If there are 10 seconds of the song left any user that tune in at
> that time will hear only the last 10 seconds, not the beginning of the song.
That just makes it simultaneous, it says nothing about using
multicast:
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/ipmulti.htm#xtocid1
> Given this scenario, is a T1 connection (1.5mbps) and 1tb/month
> bandwidth enough?
If all of your users use multicast, it is overkill. But I find it
unlikely that they will all use multicast, unless your audience
is exclusively on NRENs and high-end ISPs. It is more likely that
at least some of them won't be able to use multicast because
their network doesn't support it. A T1 can serve about 10
simultaneous 128 kbps users.
Jochem
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