[Gllug] OT: What is the REN of a modern powered phone?

[James Courtier-Dutton]

On 7 November 2010 10:26, Chris Bell <chrisbell at chrisbell.org.uk> wrote:
> Hello,
>   Old analogue phones with line-break dialling could sit across the
> incoming line as long as only one was actually in use and there were not
> more than six 1Kohm impedance ringers in series. The specification was
> changed so that up to 4 higher impedance ringers could be connected in
> parallel ("4 REN").
>   Many modern phones do not require the "ringer" wire because they use tone
> coding, so what is their actual REN? And how many can actually sit on the
> line but with their handset on the rest without excessive line loading? I do
> use my landline, and it is much more convenient to have phones available
> where they are needed.
>
DECT portable phones only connect to the physical phone line at one
point, so you can have multiple DECT phones only using 1 REN.
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