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Author Topic: Busy lines/locked lines  (Read 17553 times)

Offline johnp

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Re: Busy lines/locked lines
« Reply #15 on: October 23, 2013, 07:59:53 PM »
Ralph,

Are you telling me that Nortel didn't offer open loop to analog ports? :-)
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Offline ralph

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Re: Busy lines/locked lines
« Reply #16 on: October 24, 2013, 08:22:54 AM »
From normal station ports I don't believe they do.

Ralph
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Offline v2win

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Re: Busy lines/locked lines
« Reply #17 on: October 24, 2013, 10:13:12 AM »
I am assuming the Nortel is an Option

Try this

LD16: CNTL yes, TIMR tfd 3600

This will perform a timed forced disconnect (TFD) after 1 hour, the maximum time period.

Also on the Nortel side I believe if you use an OPX line card you can get a reversal on disconnect
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Offline consta

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Re: Busy lines/locked lines
« Reply #18 on: November 18, 2013, 08:21:10 AM »
Hey guys still no luck with this. Question my Boss is crazy to go install a 5000 controller on there to see where this would fix the issue. What is your take on this?

note: 3300 has 3 analog lines,1 smart cell terminal which works fine when it comes to disconnecting.
          3 extensions lines coming from nortel  PXB into the 3300 system which always busy/locks up  one or all of the  3 analog lines.

Any one cares to have a look through the configs
Other ideas are welcome.
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Offline tomj

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Re: Busy lines/locked lines
« Reply #19 on: November 18, 2013, 04:12:18 PM »
Hi Karma

Does the Nortel send a "tone" when the call clears, do you reconise this, could you record it?

Regards

Tom
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Offline johnp

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Re: Busy lines/locked lines
« Reply #20 on: November 18, 2013, 06:30:03 PM »
Just as a note, true tandem trunking between these 2 would likely work without issues. You may need to go to sandman and try one of their devices to get cpc signalling.
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Offline ralph

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Re: Busy lines/locked lines
« Reply #21 on: November 19, 2013, 08:41:17 AM »
true tandem trunking between these 2 would likely work without issues

Did you mean to say it would work without issues?

What kind of device would you recommend for CPC signaling?

Ralph
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Offline v2win

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Re: Busy lines/locked lines
« Reply #22 on: November 19, 2013, 08:48:23 AM »
What kind of Nortel are you connecting to?
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Offline LoopyLou

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Re: Busy lines/locked lines
« Reply #23 on: November 19, 2013, 08:50:30 AM »
Agree with Ralph. Typical PBX behaviour is that on hangup a single line port just gives back dialtone. Don't think you can use that as a tone to detect for disconnection.
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Offline tomj

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Re: Busy lines/locked lines
« Reply #24 on: November 19, 2013, 02:21:05 PM »
Agreed, inter-pbx trunks, E&M for example provide answer and disconnect supervision, Consta on the other hand is piggy-backing Nortel (analogue extension lines) to Mitel 3300 LS (loop start) trunks. Not ideal, but we’ve all done it.

Trunk lock-up is occurring because the Mitel LS trunk is expecting a line break to indicate the (Nortel) far-end has hung-up. Outside of North America the Central Office (public telephone exchange) typically sends a disconnect “busy tone” as the clear down signal rather than a line break. Line reversal is a CO Descriptor option.

You may have noticed a Class of Service option to provide this on ONS ports introduced recently. Guessing this was introduced for European based applications. Google busy tone disconnect, take a look at the Max Terminator, used this way back with the SX2K.

Since about Release 8/9 LS trunks on the CX/CXi/MXe/ASU support tone disconnect, you will find CO Tone Disconnection in ESM and a bunch of tone/frequency settings (primarily for Latin America) hidden away in the Product Support (software) directory. In practice, unless you have a friendly service provider or handy data sheet you need to record the tone, analyse it, configure CO Tone Disconnect and reboot. It does work!
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Offline johnp

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Re: Busy lines/locked lines
« Reply #25 on: November 19, 2013, 07:47:45 PM »
http://www.sandman.com/pdf/Page94.pdf I don't know if they still sell them.

Quote
true tandem trunking between these 2 would likely work without issues
I don't consider using an analog station connected to a LS trunk as being true tandem.

We don't know the fully configurations of the 2 systems to make better recommendations.


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Offline ralph

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Re: Busy lines/locked lines
« Reply #26 on: November 20, 2013, 08:44:59 AM »
I looked that the PDF.   I liked the line that said "Great for old people too!"

 :)

Ralph
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