Fake inbound calls 2

[EyeHog]

I have an issue with a phone system. Each time a outside caller hangs up first, the phone system detects what it thinks is a ring, and it rings a call, that is not actually a call, into the main hunt group. The phone company is not actually sending in ring voltage, my butt set does not ring, but each time the phone system hears a call disconnected, it thinks it's another inbound call.
I have tried adjusting the ring detection time to the maximum, no change. The only thing I have found that makes this stop is turning on "Unsupervised Analog Trunk Disconnect Handling" but when I do that, transfers do not work.
Any other ideas for things I should try?

 

[daveyboy1977]

I would look at the disconnect clear timer in the Analogue Options, this is also known as CPC(calling party control) Disconnect Signal, not had much experience myself with analogue on IPO as most have ISDN or SIP these days, but on Nortel/Avaya BCM's I get the provider to set this to 800ms when I experienced problems.

On the IPO I would try lowering the timer and testing as you go.

Thanks Dave.

 

[smokinjoe2938]

(The phone company is not actually sending in ring voltage, my butt set does not ring), well then this is your problem in a nutshell, you will need to go back to the provider as you will need this ringing voltage for the ip office to function correctly.

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[EyeHog]

daveyboy1977,

I have tried unchecking that box, but I haven't tried adjusting the timer yet. I will give that a shot. Thanks.

I had someone else suggest upgrading the system to 8.1.73, I am currently running 8.1.63, so I will try that next time I go out there as well.

smokinjoe2938,

Duh. Yes, the provider is sending ring voltage when there is an inbound call. If you had read my post, you would have seen that I stated "Each time a outside caller hangs up first, the phone system detects what it thinks is a ring, and it rings in a call, that is not actually a call, into the main hunt group." WHEN THAT HAPPENS "The phone company is not actually sending in ring voltage, my butt set does not ring, but each time the phone system hears a call disconnected, it thinks it's another inbound call."

Sorry for the confusion.

 

[smokinjoe2938]

sorry about the confusion eyehog, I am guessing that you have analogue trunks at this location, I have seen that when the vendor has features enabled such as voicemail on the trunks, check with the provider to make sure voicemail is not enabled on these lines.

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[telecotek1]

I actually used to have a similar problem with FIOS also saw this with lines that FXO off of cable modems. For some reason the IP Office doesn't know how to release the call. I wound up giving up after trying every conceivable configuration and going back to traditional POT's lines. I even sent the call in on a trunk and back out to analog station and back as trunk again just to see what would happen. no joy..

 

[Telecomboy]

You could also try unchecking "autohold" under System, Telephony options. I had a client that was not properly disconnecting from their first call before pressing the button for the next ringing call (and hence putting the first call on hold versus hanging up on them). When the hold timer was reached, it would ring back that extension with nobody there. By taking autohold off, when they grab the second call it will drop the first call unless they put it on hold using the hold button. Just a thought.

 

[EyeHog]

smokinjoe2938,

I have a placed a call into the provider to ask them about voicemail on the lines. It's a small local company, with one technician, but they've been helpful in the past. Yes, they are POTS lines.

Telecomboy,

That is a good thought, and I have run into that issue before, but this problem occurs even if I take the line off hook with my butt set. When I place it back on hook, the phone system picks up and plays the AA (if it's in night mode) or rings the main huntgroup.

Thanks!

 

[EyeHog]

Would a loop current regulator help out with this? I haven't gone as far as to check the voltages of the lines, but that may be something that would be worth looking into also.

http://www.sandman.com/loop.html#LoopCurrentRegulator

 

[Telecomboy]

What about voicemail attached to their analog lines? If they have voicemail through their provider, the provider will send a signal to the IPO causing it to ring, but nobody there. It is the message waiting indicator signal. Even if they say it is not set-up, have them double-check.

 

[smokinjoe2938]

telecomboy, read my previous post, we are on the same page here lol

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[Telecomboy]

Oops! I missed that.

 

[EyeHog]

Telecomboy, smokinjoe2938,

Fixed it! It was the message waiting indicator signal. They did not have voice mail, but the message waiting signal was still being sent. Had the phone company turn that off, and the phantom calls went away!

Thanks so much!

 

[smokinjoe2938]

ahhhhhhhhh love it when a plan comes together!!! awesome!! thanks for the star!

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