PN-8COTS card in lockout?

[NPRVTXer]

Hey all,

I recently bench tested a 2000 IVS2 system and deployed the switch to the site (had 2 lines as test lines attached to the
PN-8COTS card with no difficulties .At the site after adding the verizon supplied lines to the trunks, every one of the ports that had a Verizon line connected lite up the PN-8COTS card port as if it where in lock out. I could not grab dial tone from the DTERM trunk select. I could grab dial tone with my butt set from the Dmark but nothing from the DTERM. another odd thing.... an incomming call could be answered from the DTERM. After that call ended I noticed that the line key was green and had to disconnect the set in order to get the line key to turn off. after that the DTERM was unable to get dial tone as before. I reinitilized the resiedent program and had no affect.
Any suggestions would be great! Thank again as always!

 

[belevedere]

The resident program sets the trunks up as loop start. Verify that the Verizon trunks are loop start. Measure the loop current and voltage supplied on the lines from Verizon. They should be 26 to 50 ma at no more than -48vdc. If they are in spec and you are still at the resident program, then the 8COTS card may be defective.

 

[OzzieGeorge]

How you got it this way I can't imagine, but the symptoms you describe are what I would expect to see if the circuits were set to make busy!
Check Cmd E51 de trunk number de and make sure they are set to 1

 

[3racefan3]

Also check that the polarity is correct. Try reversing tip and ring.

 

[belevedere]

If the system was re-initialize to the resident program then the trunk ports cannot be busied out. Did you just press the reset button, or did you perform a B or C load? (B load clears everything, C load installs a resident program).

 

[OzzieGeorge]

No mention of loads just initialization that to me is simply a reset and if he had done a load (B or C) the cot card wouldn't be there and would need reprogramming in again! Also there would be no Dterm trunk selects!

Seems to me we need more information!

 

[belevedere]

Agreed, we need more info. However he did state that it worked inbound.
A busied out trunk port would not work outbound, but would work inbound.

 

[OzzieGeorge]

In my experience, although I would have to check it as it has been so long since I have done this, the busy out feature is omnidirectional and only blocks outbound. As the card can't busy out the CO it accepts the incoming call. The reverse applies with a busied out station, it blocks incoming but allows outgoing!

Which you seem to be agreeing with but prefixing with "However" (these are the symptoms the OP is reporting)?

 

[NPRVTXer]

WOW!! Thank you guys for all the posts. Sorry I haven't responded in the last day but we are currently under the "doing more with less" (manpower) doctrine. I'll try and answer as many concerns that you all have in some sort of organized fasion.


1, After install of IVS2, once CO lines added to trunk card all trunks that had CO line added (4 total) lite up on the PN- 8COTS Card. could not access dial tone from Dterm. could get incoming call (however LNB light would stay on after call ended and required the set to be unplugged). Could gain dial tone from dmark with butt set.


2, Initiated a C Load Resident Program, performed a lens list up from MAT and it listed all 8 trunks after the Dterm cards. Trunks returned to "busy state after
C Load was completed.

3 When I removed bridge clip from 66 Block to appropriate trunk, the trunk light would go off. bridge clip back on... and busy light would come back. (like that even matters).

4, I stopped by the site on my way back to the office yesterday afternoon with a PN-8COTQ card as opposed to a PN-8COTS card and plugged it in. I sung dial tone back over to the IVS2 and NO LIGHTS! I was pressed for time so I did not have a test station plugged into the system... so I'll return to the site today and continue testing.

I just want you all to know that I could not have gotten this far with out you folks!
Every response I get is like a nugget of revelation and I sincerely appreciate every one of them!

 

[belevedere]

The 8-COTQ card is used for loop start only with caller ID.
The 8-COTS card is used for loop or ground start determined by programming.

8-line Central Office Trunk Card (Loop Start Trunk)
Provides loop detection, receiving/sending the Caller ID (CLASS
SM) signal.
μ-law only.

 

[NPRVTXer]

Belevedere stated,
"The resident program sets the trunks up as loop start. Verify that the Verizon trunks are loop start. Measure the loop current and voltage supplied on the lines from Verizon. They should be 26 to 50 ma at no more than -48vdc. If they are in spec and you are still at the resident program, then the 8COTS card may be defective".

Thank you Belevedere for your insite.

After line testing the lines at the site. this was the findings for the 4 lines there.

line 1: -45 VDC
line 2: -51.8 VDC
line 3: -51.8 VDC
line 4: -51.8 VDC

NOTE I didn't get the ma levels

I came back to the office and decided to test the two verizon provided test lines that work on the bench test IVS2 unit and here are the levels of each line.

test line #1: 28.6ma -65.8 VDC
test line #2: 28.9ma -67.1 VDC

I'll wait for a response to formulate my next questions. Thank again guys!