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#114088 06/14/11 11:12 AM
Joined: Jul 2010
Posts: 185
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Joined: Jul 2010
Posts: 185
I have an issue with the trunks disconnecting everyday. It doesn't happen on every call but by the end of the day my trunks get all tied up and I have to manually disconnect it only happens on my LS/GS card in slot 9. I have replaced the card and it still does it. the are pots lines on the card. Here is the data programming:


COMMAND 565
abcdefghij
1111101010
201001001
3120002
40510010000
500780
611041
702433020
(4C
COMMAND 566
1111101010
abcdefghi
201001001
3120002
40510010000
500780
611041
702433020
(4B
COMMAND 567
1111101010
abcdefghi
201001001
3120002
40510010000
500780
611041
702433020
(4A
COMMAND 568
1011101010
201001001
3120002
40510010000
500000
611041
702433020
(59
COMMAND 569
1111101010
201001001
3120002
40510010000
500780
611041
702433020
(48
COMMAND 570
1011101010
201001001
3120002
40510010000
500000
611041
702433020
(60
COMMAND 571
1011101010
201001001
3120002
40510010000
500000
611041
702433020
(5F
COMMAND 572
1011101010
201001001
3120002
40510010000
500000
611041
702433020
(5E

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Joined: May 2005
Posts: 1,006
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Posts: 1,006
How many actual trunks do you have? What is on equipment #078 (what station and why)?

Joined: Jan 2005
Posts: 15,378
Likes: 13
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Have you verified polarity, loop supervision and line voltage on these trunks? Real PBXs require the true FCC standards for signaling. My guess is that they are running at a voltage significantly below standards, as those delivered behind a channel bank or IAD. Worse yet, there is no open loop supervision being provided by the service provider upon disconnect of the INCOMING calls that hit these trunks.

The PBX will allow them to be siezed once, but not again. If they do not receive the appropriate loop supervision disconnect from the telco, the trunks aren't told to drop the call that was in progress, hence the trunk ports remaining engaged. The PBX is only doing what it is told to do (or in your case not).

Loop supervision is an issue that grows increasingly frustrating for us in the business daily. Telcos and CLECs simply don't understand that a POTS line isn't as simple as they think it is.

Get the service provider to provide this, verify your polarity of all trunks and things will be fine. Oh, and don't take their word for it. Verify it yourself. You will be amazed how well the system works once you tell them how to fix the problem.

Sarcasm intended on that last sentence, well sort of....


Ed Vaughn, MBSWWYPBX
Joined: Oct 2004
Posts: 1,057
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Joined: Oct 2004
Posts: 1,057
For each trunk, register 2, bit F, change from 1 to 0.
Dropping the disconnect timer makes the trunks more sensitive to disconnects.


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