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Joined: Apr 2009
Posts: 430
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OP
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Joined: Apr 2009
Posts: 430 |
Customer with comcast co lines, calls drop intermittently 30 sec or so into a call. Tested co lines, clear and good volume, reset system
Told customer to report trouble to comcast. Another customer 2 miles away with comcast was having low volume.
Thanks, Gary S.
Gary Stevens
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Joined: Jan 2005
Posts: 15,367 Likes: 12
Moderator-Vertical, Vodavi, 1A2, Outside Wire
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Moderator-Vertical, Vodavi, 1A2, Outside Wire
Joined: Jan 2005
Posts: 15,367 Likes: 12 |
Believe it or not, the voltage on the lines may be too HIGH, not low as usually suspected. I'd measure them. If they're at 52 volts or more, that's your problem. Remember that lines were designed to leave a traditional CO at 52 volts so that they would arrive at the customer's premises (after voltage drop) at about 48 volts. Systems were never intended to work right on 52 volts. Comcast's EMTA is right there, so there's no voltage drop. I'd ask them to tone it down, which they won't. You'll need to invest in some attenuators from Sandman to fix it correctly.
Ed Vaughn, MBSWWYPBX
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Joined: Jan 2008
Posts: 3,821
Retired Moderator
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Retired Moderator
Joined: Jan 2008
Posts: 3,821 |
Its the way Comcast delivers the lines, their SIP to analog converters can have the co voltages set wrong and then its just as Ed posted above.
www.myrandomviews "Old phone guys never die, they just get locked in some closet with an old phone system and forgotten about" Retired, taking photographs and hoping to fly one of my many kites.
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