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Joined: May 2005
Posts: 456
Member
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Member
Joined: May 2005
Posts: 456 |
I find that the problem with intermittent caller ID usually happens when the first ring to come down the line from the central office is far too short. This can happen in older CO's. Regardless, the CID follows the first ring. In this case, as far as the ESI switch is concerned there never was caller ID. It needs to detect the first ring in order to look for the CID, which it can't because 1/10 second isn't long enough. Some carriers seem to consider a 1/10 sec. burst as a valid ring cadence :shrug:
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