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Joined: Jan 2005
Posts: 15,379 Likes: 13
Moderator-Vertical, Vodavi, 1A2, Outside Wire
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Moderator-Vertical, Vodavi, 1A2, Outside Wire
Joined: Jan 2005
Posts: 15,379 Likes: 13 |
Sam:
Chances are that it is equipped for grounded ringing. This means that the system isn't expecting today's ring voltage on trunks across tip and ring. It's looking for ringing from the ring lead to ground. A very common situation back in the day.
Make sure that you have a good ground to the 555 and you might luck out. Also, make sure that tip and ring polarity on the trunk(s) is correct.
Ed Vaughn, MBSWWYPBX
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