At my HQ I’m instaling a 128kbit
leased line connection, with guaranteed bandwidth to the Internet; The telco
promises less then 20 ms to the internet (to ronix.ro), no jitter and no packet
loss. So I’m hoping for 40 ms times to net and small jitter J This is my „hub”. For my „satelite” instalations
I’m planning on grabing a connection from a different provider (as this telco
provider is expensive) but I’m also considering a 64kbit leased line from
the same provider, just in case my VoIP doesn’t work with the cheeper
providers. My remote instalations will never have more then one „conversation”
load, and this conversation would be ZAP to IAX or SIP. That is, the distant
instalation will need to forward all calls coming in on the zap chanel to my HQ
Asterisk. That’s all it will ever do J. I’m not sure „trunking”
woud provide anything in this case as there will never be more then one
concurent conversation from the remote * to my HQ *. I’m expecting IAX to
provide better performance over SIP but not by much. Considering my remote * instalations will
never have more then one concurent conversation with my HQ and considering I
can get a really good 64kbit line I guess I’m OK. As for my HQ, I’m
sure I’m OK because I’ll get a 128 kbit line and I’ll be able
to afford an upgrade to 256kbit. I can actually go all the way to 2048 kbit,
but that would no longer be economically viable. So I’ll see how it goes, and I hope
I’ll have the time to put in a comment on the „low bandwidth”
wiki on voip-info.org. Thanks to everyone for your help. From:
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of tim panton On 2 Feb 2006, at 08:09, Cosmin Prund wrote:
Using the calculator I’m getting about 23 kbps for both
incoming and outgoing. What does this mean: Is a 64kbit link used at 71%
capacity ((23+23):64) or is it used at only 35% (23:64)? Will this vary over
time (i.e: does the codec generate more then average data at times? How about
less then average?) It depends on what sort of link you have. Most links are full duplex
(leased lines etc) which would be 35% but some radio based links are half duplex which would be 71% So for a 64k link you will (just about) get 3 729 calls. If all the calls between are between the same two servers, you can use
IAX trunking, which would push you up to 5 calls. (What that tells you is that for 729 and gsm, the
headers are as big as the data). You talk about satellite stations, if you are going for a hub and
spoke, you should put the hub on the highest bandwidth link.
Thanks. From:
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
On Behalf Of Rob Lith What codec is that
using. G.729 will give you 10 calls at best over 256k unless you're trunking
with IAX2? I don't know anyone using lpc10... On 2/1/06, Garth van Sittert
<[EMAIL PROTECTED]> wrote: Hi Cosmin _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: |
_______________________________________________ --Bandwidth and Colocation provided by Easynews.com --
Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users