[Oz-ISP] [AusNOG] Re: Satellite ISPs
Troy Davis
lists at comstech.com
Sun Jun 3 20:59:41 EST 2007
If my memory serves me correctly you can use DOV data over voice to your
carrier which will basically just make it 2 x dialup accounts. I did this
for quite a while when I was unable to access ADSL
-----Original Message-----
From: aussie-isp-bounces at taz.net.au [mailto:aussie-isp-bounces at taz.net.au]
On Behalf Of Kai
Sent: Sunday, 3 June 2007 3:18 PM
To: ausnog at ausnog.net
Cc: aussie-isp at taz.net.au
Subject: Re: [Oz-ISP] [AusNOG] Re: Satellite ISPs
Last year I was working for an organisation with nodes in remote and
hard to access places like Balgo (no, not Balga in Perth, I'm talking
Balg0, about 200k's South East of Halls Creek), Kupungarri, Billiluna,
Imintji, etc
They already had existing two way satellite services which were
expensive and of course high latency but I was asked to investigate and,
if practical, implement ISDN on those area's. The idea was of course to
use the reduced latency of ISDN to make our applications work better
when used over VPN, whilst also leaving the sallite available as a
fallback if the ISDN failed and or setting priorities so any traffic not
destined for the VPN would go over the higher latency satellite and
leave more room on the ISDN for the VPN traffic.
Being in the Kimberley, wet season monsoons can quickly wipe out a
satellite service for a few days, sometimes a week or so, but once the
clouds have cleared (or the cyclones have passed) there's also the
chance of local exchanges flooding or poorly insulated cables arcing and
all that, and yes it's expensive to have two services feeding the same
sites, redundancy is essential when travel time to those sites is at
least a day by car and there's no regular air services.
BigPond ISDN was the only option availabe and the set-up/installation
fees were not cheap, the download quota's are also extremely minimal and
of course the usual Telstra requirement of having all phone/data
services with Telstra.
eg
http://my.bigpond.com/internetplans/dialisdn/isdn_plans/default.jsp
has the requirement to be on BigPond Home
http://www.telstra.com.au/isdn/pricing.htm
I don't have all my research data with me from that project but you're
welcome to contact me off list with any questions.
Curtis Bayne wrote:
> Hey Edwin,
>
> Sorry for the late reply - but has your friend considered ISDN?
> Throughput may not be quite as good, but it may be the only alternative
> for latency sensitive applications. You'll find that latency
> on satellite is usually around the ~700-800ms mark, weather and location
> permitting.
>
> Curtis
>
>
> On 03/06/2007, at 12:55 PM, Edwin Groothuis wrote:
>
>> Thanks to all who replied. Much appreciated by my friend, and I've
>> learned quite some about what the possibilities are.
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