Dialtone from DID on 8X24?

[peterbokunet]

I have an 8X24 with three DID cards in the 12X0. The 8X24 is putting out dialtone on each DID trunk. The telco I'm working with figures the dialtone is confusing the swtich and then not handing the call off. The net result is that calls to numbers that drop to these DID trunks seem to seize the port on the 8X24 but the call never connects. Is the dialtone on the port a misconfiguration on my part or SOP?

For what it's worth, there is some Integral Access stuff in between making this an odd install. Any thoughts?

Thanks,

 

[peterbokunet]

Okay, I have now confirmed that the 8X24 should not be putting dialtone out to the ports. Given DR5.1, how do I convince the system to knock it off and play well with others?

 

[MarvO1]

Are you talking about the DID ports?, and where do you hear dial tone? When you hit a target line key, the system should respond with "Inbound Only" Are the DID's set to Wink, or what? The KSU is not going to provide dial tone.
Bold statement, let me say that differently. I have never seen the KSU provide dial tone except intercom.

MarvO said it

 

[joelunchpail]

did trunks do put out dialtone (not sure if all formats do, but most of the did trunls i have dealt with do.) but i've never had it confuse a switch before it does confuse the odd i&r repairman. if the tip and ring are reversed they will get locked out from the switch. they are also usually wink start.

 

[peterbokunet]

With the jumper pulled, the port on the KSU isn't connected to anything and I'm getting dialtone. Listening towards the switch, no dialtone. If I put a POTS phone on there (with an RJ-11 plug that fits on the 66-block pins), go off-hook and hit digits I get a fast busy (which probably makes sense as the digits should come prior). With a buttset while on-hook there's dialtone just the same.

The lines are winkstart. While working with telco we flipped both our sides over to immediate start and we were able to receive calls, but the switch never saw the wink and would tear down the call 10 seconds into it.

Two months ago a guy suggested that I trade in the newly acquired 8X24 for a MICS so I could take a T1 trunk. Now I know why.

Any other thoughts, ideas, encouragement or chastising is welcome and appreciated.

Thanks,

 

[joelunchpail]

if you dial your last 3 or 4 digits depending on what the co. is sending, you can dial inward to test your ksu, when you first seize it you should hear the wink (sort of a double click.)

 

[joelunchpail]

they are polarity sensitive , at the c.o. end... but i dont think there is anything in the c.o. that cares if there is dialtone or not..
normally if the c.o. doesnt get the wink, it will go to the next trunk ,it won't send any digits untill it sees the wink. have you tried reversing the polarity.Also if you don't have the right number(the co will send usually 3, or 4 digits ) but i think they can send any number and they can send either dtn or dpt.(tone oe pulse)) , and the same digits must be programmed as your recieved digits programmedin the ksu that the c.o . is sending you,you will get fast busy.

 

[peterbokunet]

With a buttset and DMM it became clear that the cable between the block that I'm jumpered to and the "channel bank" had the polarity of each pair reversed. Two weeks and 4 hours later we rolled the jumpers backwards as joelunchpail suggested and everything "just worked."

Thanks all for your help.

peter