alternative to voip gateways

Michael Thomas mike at
Mon May 11 01:05:38 UTC 2020

On 5/10/20 5:56 PM, Nick Edwards wrote:
> yes, POTS is the critical bit, the internet/data is an extra without
> guarantee, ie it is not a critical component, voice is.

Voice may be a critical component regulationwise, especially with CO 
based battery backup. But in the rest of life IP bits are way more 
important. I can get a generator to run my CPE and router, but if the 
provider can't be bothered to power the first hop, then i'm pretty well 
screwed. In California during PG&E's massive power outages you couldn't 
get E911 even if you had power to your CPE in way too many cases. This 
is was a huge fail.


> On 5/10/20, Baldur Norddahl <baldur.norddahl at> wrote:
>> 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 at>:
>>> On 5/8/20, Baldur Norddahl <baldur.norddahl at> wrote:
>>>> On Thu, May 7, 2020 at 11:14 AM Masataka Ohta <
>>>> mohta at> 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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