Dan Fernandez
2003-May-05 20:38 UTC
[Asterisk-Users] bandwith issues, ISP hosting services, etc
I am looking into supporting around 20 SIP clients (ATAs, IP softphones, etc) distributed in around 10 different end points (in South America). For the most part they all have narrow band connections 64kpbs, 128 at most and I?d like to use g729 all around (don?t have too many alternatives) To start with, I will have one * with no gateway to the PSTN and eventually a few * boxes with termination at different points. My main concern is the bandwith I will need on the site where * will be located. Currently I have 128kbps but what happends if: 1) Several users connect at the same time to check their voicemail, or run some other app. Is there a way to limit the number of simultaneous connections? that is can the user get a busy tone? I think that would be better than running out of bandwith and the user getting a bad connection. 2) Assuming all the phones are configured for g729 (and therefore no codec translation) can I assume that the RTP stream between any two point will no got through the * box? 3) What kind of bandwith do the colocation (shared) etc, ISP services in the US offer? They all give you a monthly bandwith (ie 50GB, etc) but there is no mention of the guarantee bandwith for hosting apps like *- Since for now i don?t need to terminate phone calls on the PSTN, will these be a good solution (rather than paying US150 for a 128Kpbs to host it from here) Thanks in advance Dan -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20030505/aad63618/attachment.htm
Steve Radich
2003-May-05 22:15 UTC
[Asterisk-Users] bandwith issues, ISP hosting services, etc
On the other issues I'm not sure, however for Asterisk colocation in the US
(and abroad) I can give you some details.
I'd be willing to do one of at least two deals, we can customize these some
to fit your needs:
1) Dedicated Asterisk box - $500 Setup, $200/month one year term
a. 2.4 GHz Athlon CPU
b. 512 mb RAM
c. RedHat Linux
d. Asterisk installed / configured
e. 256k/second 95% billing bandwidth burstable to 10 megabit (quality
bandwidth, not cogent or some super cheap backbone)
f. root access to update Asterisk, etc.
g. Colocated at Ashburn, VA (Washington, DC area) so if you need to
bring in T1/PRI/etc. then plenty of options at available. .
2) Shared Asterisk box with SIP, IAX/IAX2 connectivity and a SIMPLE
dial plan (i.e. no more than a few contexts) - $200 Setup, $50/month One
year term
a. Same as above but no root access, no access to /etc/asterisk
b. Configuring work - US $100/hour - Any extensions.conf changes have
to be done by us since it's shared between clients
3) Normal colo - $149/month - up to 4U and 10gb/month bandwidth (burstable
to 10 megabit)
4) 1U Colo - $99/month up to 10gb/month
There's a lot of places pushing Cogent bandwidth at cheaper rates / more
bandwidth included - We believe in quality not quantity and build a network
for that instead of buying the cheapest bandwidth we can. Since we're in
the process of moving our network isn't as multihomed right now as usual,
but we'll most likely (reviewing contracts currently) be on net with
AT&T,
PCCWBtn and Level3. If you REALLY had a need for a specific backbone then
many times we can turn up a new 100 megabit fiber (or gigabit) to a new
vendor within 24 hours (obviously you have to commit to quite a bit of
bandwidth for us to add a backbone) - but if you need to be on net with
someone in particular that's an option with us and we can do it very quickly
and painlessly.
I can offer you IAX2 based call termination world wide at decent rates, we
are still putting together all rate plan details on this though.
Of course if you want a T1 / PRI to a voice vendor we'd support that - The
cross connect is about $200/month from Equinix though and I can't control
that cost, however it's roughly the same cost for T1, T3, Ethernet, or fiber
(SC, ST, FC single/multimode) - So if you need a HUGE connection to your
telephonic stuff (i.e. T3 / fiber) then the cross connect isn't bad.
If you want your own T1/PRI then we have a partnership at another datacenter
/ CLEC to do this with no cross connect fees - however the other center
isn't staffed 24/7 and doesn't have hardware techs on site to repair
problems. The bandwidth is pretty good there too but more expensive. I'd
be happy to assist in solutions at either center though if you need one.
Both are in the Washington, DC area.
However I do want to send a few traces and comment:
1 <10 ms <10 ms <10 ms customer.bitshop.com [209.8.76.1]
2 <10 ms <10 ms 10 ms bitshop-gw.pccwbtn.com [205.252.248.129]
3 <10 ms 10 ms 11 ms pos1-1.cr02.nyc01.pccwbtn.net [63.218.8.45]
4 <10 ms 10 ms 10 ms nyk-bb1-geth1-3-0.telia.net [213.248.82.69]
5 231 ms 300 ms 50 ms nyk-i3-geth1-0.telia.net [213.248.82.146]
6 <10 ms 10 ms 10 ms telekomsa-01531-nyk-i3.c.telia.net
[213.248.82.238]
7 70 ms 80 ms 80 ms
london-dir-telecity-pos-5-0-0.telkom-ipnet.co.za [196.43.9.53]
8 230 ms 220 ms 231 ms wblv-lir-1-pos-4-0-0.telkom-ipnet.co.za
[196.43.9.49]
9 220 ms 231 ms 220 ms tenet-gw.wc.saix.net [196.25.55.66]
10 260 ms 251 ms 250 ms int.puk.uni.net.za [155.232.50.121]
A trace from a public traceroute server in South Africa shows:
1 esr (143.160.32.200) 0.337 ms 0.201 ms 0.172 ms
2 fw (143.160.64.1) 0.529 ms 1.083 ms 0.392 ms
3 igs (143.160.4.2) 1.445 ms 1.338 ms 1.291 ms
4 puk.int.uni.net.za (155.232.50.122) 33.775 ms 33.466 ms
33.527 ms
5 wblv-er-2-fe-2-0-0.telkom-ipnet.co.za (196.25.134.65) 34.296 ms
34.150 ms 34.288 ms
6 london-dir-telecity-pos-8-0-0.telkom-ipnet.co.za (196.43.9.50)
182.963 ms 183.388 ms 182.468 ms
7 ldn-tci-col1-gig-2-7.col.uk.telia.net (213.155.141.153) 254.623
ms 254.619 ms 254.170 ms
8 ldn-thoe-b1-srp9-0.telia.net (193.45.0.134) 255.163 ms 254.986
ms 255.575 ms
9 btn-pccw.c.telia.net (213.248.74.46) 254.739 ms 254.371 ms
255.072 ms
10 ge5-3.colo01.ash01.pccwbtn.net (63.216.0.109) 259.676 ms
258.091 ms 258.400 ms
11 bitshop-gw.pccwbtn.com (205.252.248.130) 259.231 ms 258.728 ms
258.979 ms
12 customer.bitshop.com (63.218.155.160) 260.181 ms 259.479 ms
258.714 ms
**** NOTE **** 250 ms may be a little slow to do a quality VoIP without any
echo/delay - This is, I assume, tracing to fairly large pipes - not an ISDN
user. You may have to go with Colo closer to you instead of the US.
I do have agreements in place to do colo at:
USA: San Jose, Chicago, Dallas, Newark, NYC, LA, Atlanta
Asia: Hong Kong, Tokyo, Taipei, Taiwan, Seoul, Sydney, Multiple sites in
mainland China
Europe: London, Frankfurt, Amsterdam, Paris, Madrid
NOTE: Not all these locations are manned at all, some are data centers with
VERY limited space availability. Some are send a server, if it breaks it may
be a month or two to have it back and repaired - Many are colo for equipment
not web stuff but an agreement we have opens all these centers to us. Prices
vary obviously. Ashburn, Virginia USA is where our servers are moving to
and a VERY nice facility. A few are "walk in" only centers with card
access
only - Since we have no staff we can quote rates, but can't provide ANYTHING
other than a keycard for entry.
Steve Radich - Colocation / Virtual Dedicated / Dedicated Servers
BitShop, Inc. - <http://www.bitshop.com/> http://www.bitshop.com -
$149/month colo special
-----Original Message-----
From: Dan Fernandez [mailto:danfernandez00@hotmail.com]
Sent: Monday, May 05, 2003 11:39 PM
To: asterisk-users@lists.digium.com
Subject: [Asterisk-Users] bandwith issues, ISP hosting services, etc
I am looking into supporting around 20 SIP clients (ATAs, IP softphones,
etc) distributed in around 10 different end points (in South America). For
the most part they all have narrow band connections 64kpbs, 128 at most and
I?d like to use g729 all around (don?t have too many alternatives)
To start with, I will have one * with no gateway to the PSTN and eventually
a few * boxes with termination at different points.
My main concern is the bandwith I will need on the site where * will be
located. Currently I have 128kbps but what happends if:
1) Several users connect at the same time to check their voicemail, or run
some other app. Is there a way to limit the number of simultaneous
connections? that is can the user get a busy tone? I think that would be
better than running out of bandwith and the user getting a bad connection.
2) Assuming all the phones are configured for g729 (and therefore no codec
translation) can I assume that the RTP stream between any two point will no
got through the * box?
3) What kind of bandwith do the colocation (shared) etc, ISP services in the
US offer? They all give you a monthly bandwith (ie 50GB, etc) but there is
no mention of the guarantee bandwith for hosting apps like *- Since for now
i don?t need to terminate phone calls on the PSTN, will these be a good
solution (rather than paying US150 for a 128Kpbs to host it from here)
Thanks in advance
Dan
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