nanog mailing list archives

Re: alternative to voip gateways


From: Nick Edwards <nick.z.edwards () gmail com>
Date: Mon, 11 May 2020 10:57:37 +1000

indeed, otherwise thats making the data the critical compnent and
voice an add on extra which is not whats going no here :)

On 5/11/20, Mike Hammett <nanog () ics-il net> wrote:
If POTS last mile is available, why complicate it with VoIP?




-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com

Midwest-IX
http://www.midwest-ix.com

----- Original Message -----

From: "Baldur Norddahl" <baldur.norddahl () gmail com>
To: "Nick Edwards" <nick.z.edwards () gmail com>, nanog () nanog org
Sent: Sunday, May 10, 2020 8:23:36 AM
Subject: Re: alternative to voip gateways


Hi Nick


Have you considered using CPE DSL routers with VoIP and FXP analog out?
Decentralized. That's what everyone are doing here. Might be free depending
on where you get the CPEs.


Or simply getting VoIP handsets. Lots of cheap DECT bases with VoIP.


Regards


Baldur




søn. 10. maj 2020 14.51 skrev Nick Edwards < nick.z.edwards () gmail com >:


On 5/8/20, Baldur Norddahl < baldur.norddahl () gmail com > wrote:
On Thu, May 7, 2020 at 11:14 AM Masataka Ohta <
mohta () necom830 hpcl titech ac jp > wrote:


Investment for FTTH is 10 times or more than that for plain DSL.


We are assuming the copper plant is already there otherwise I will
respectfully disagree.

However the economic is not as simple as you might think. Lets do some
calculations.

Assume we can build the fiber plant for 1 million USD (*). This fiber can

be depreciated over 25 years. That means we only take USD 40,000/year of
the company profit.

The copper plant is already there but the DSLAM is missing. Assume USD 100

per port plus USD 100 per DSL CPE. This equipment can only be depreciated

over 5 years. With 1700 ports this gives USD 68,000/year of the company
profit.


a 48 port dslam is 2200 (still awaiting cots on line cards for above
mentioned chassis) so its about 45 per port, CPE is about 50 a device
in bulk (inc 4 gb ports, wifi)

The copper exists, there is no ripping it out

Due to location RF links are used for data, so no need to give each
cabin "future proof" since unless a carrier will run fibre to us for
100's miles at their cost - it just aint happenin, the cost is
extremely prohibitive.

Not claiming these number are anything but fantasy as I know nothing about

the layout of the project. Just illustrating that sometimes more money now

does not necessary means less profit for a company.

(*) yes 1700 installs could be done for that in optimum circumstances. It

could also be much more expensive, all depending.

Regards,

Baldur







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