[cisco-voip] Loopstart vs Groundstart

[Scott Voll]

Loop start is the norm with Telco (at least in my area oregon).  Ground
start is something that would require the Telco to do something out of the
norm.

I have had to have a ground start installed once, but I would not do it
again.

Scott

On Wed, Mar 3, 2010 at 1:41 PM, Mike King <me at mpking.com> wrote:

> I'm just confirming what used to apply to my old PBX still holds true with
> a VIC2-4FXO in a 2921 router.
>
> For analog lines from the PSTN:
>   Loopstart bad
>   Groundstart good
>
> The application is I'm bringing up a small SRST site, and we are replacing
> they're old key phone system.  I have no idea what the existing lines are,
> but we have enough time to change the type out.
>
>
>
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>
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