[cisco-voip] Loopstart vs Groundstart

Mike King me at mpking.com
Wed Mar 3 16:41:39 EST 2010


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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