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Joined: Jan 2004
Posts: 6,648
RIP Moderator-Nisuko-Tie, General
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RIP Moderator-Nisuko-Tie, General
Joined: Jan 2004
Posts: 6,648 |
I carry a half a dozen of the sandman regulators and if loop current is even a little high I throw them on to see if they have any effect
they usually don't so I pull them off and continue looking for the cause
when they help the customer gets billed and I buy more .
Skip ------------------------------------
Serving SW and West central Fl since 1984
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Joined: Jun 2005
Posts: 512
Member
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OP
Member
Joined: Jun 2005
Posts: 512 |
Well finally this issue may get resolved today. I'm getting some help from ShoreTels escalation engineer. He has seen this problem before and he calls it audio clipping because of Echo (ERL). (I called it half duplex). He thinks the issue is with the DSPs in the ST PBX switch not having the ability to correct the echo (ERL) from the CO. Usually this happens out in rual areas where the CO is miles away from the customer. The only confusing thing is that the CO is 300 feet from the customer. I have to install a couple of patch files on the switch to correct this issue, I will let you all know if that was the problem. What does ERL stand for anyway??
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Joined: May 2002
Posts: 17,722 Likes: 18
Member
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Member
Joined: May 2002
Posts: 17,722 Likes: 18 |
ERL=Echo Return Loss. A problem with 4wire to 2wire hybrids not a problem of POTS. But I have heard of Echo problems on VOIP lines. Once again because they refuse to follow industry standards. I suppose what's next is putting talk back amps into circuits so people know they haven't been cut off. That's about a 1940's technology.
Retired phone dude
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Joined: Jun 2005
Posts: 512
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OP
Member
Joined: Jun 2005
Posts: 512 |
Well the new DSPs didn't work. So back to the drawing board. They are working on correcting the DSP issue and will release new ones to me shortly.
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