Author Topic: What is the reason of Phantom calls? Mitel 3300  (Read 10145 times)

Offline reval

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What is the reason of Phantom calls? Mitel 3300
« on: April 03, 2012, 07:59:05 AM »
Hi all,
what is the major causes of Phantom Calls and how can I prevent it ?

Thank you in advance
« Last Edit: April 05, 2012, 06:34:55 AM by ralph »


Online ralph

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Re: What is the reason of Phantom calls ?
« Reply #1 on: April 03, 2012, 08:40:09 AM »
Define what you mean by "Phantom Calls"

Ralph

Offline reval

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Re: What is the reason of Phantom calls ?
« Reply #2 on: April 04, 2012, 01:34:46 AM »
Hi Ralph,
I mean inbound calls with no ID caller on display that as you pick up the handset you hear just silent !!!
Phantom calls are randomly occur and they're often on attendant console .

Offline wiseguy

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Re: What is the reason of Phantom calls ?
« Reply #3 on: April 04, 2012, 05:59:35 AM »
What type of trunks are connected to the system?
As these are often to the Operator, have they logged on what trunknumber these calls get presented?

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Re: What is the reason of Phantom calls ?
« Reply #4 on: April 04, 2012, 06:21:08 AM »
Is there anything on the display?  A trunk label or trunk number?
You may have to read through your smdr logs to see if the call hit auto attn 1st or isn't disconnecting properly from the last call it was on.
Where's it ringing to?  An extension or the operators desk?

Ralph

Offline reval

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Re: What is the reason of Phantom calls ?
« Reply #5 on: April 05, 2012, 06:25:12 AM »
We use LS Trunks and there is no record about this calls  in SMDR logs.

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Re: What is the reason of Phantom calls ?
« Reply #6 on: April 05, 2012, 06:34:32 AM »
Could be the trunk isn't disconnecting from a previous call.
Try this:  Call in on the trunk.   Have the person that answered just hang up on you.  You stay on the line.   
See if it rings back to the operator or auto attendant.

Ralph


Offline martyn

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Re: What is the reason of Phantom calls ?
« Reply #7 on: April 10, 2012, 04:09:47 AM »
Could be the trunk isn't disconnecting from a previous call.
Try this:  Call in on the trunk.   Have the person that answered just hang up on you.  You stay on the line.   
See if it rings back to the operator or auto attendant.

Ralph

Hmm that gives me an idea for a problem that I'm having at the moment with one customer! They get one or two rings, and then the call stops. Given that it's so quick, they don't usually get the chance to see a number that is calling.

Offline Mattmayn

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Re: What is the reason of Phantom calls? Mitel 3300
« Reply #8 on: April 11, 2012, 01:44:08 PM »

Quote
Hmm that gives me an idea for a problem that I'm having at the moment with one customer! They get one or two rings, and then the call stops. Given that it's so quick, they don't usually get the chance to see a number that is calling.



That could also be a trip ring on the LS trunks. If you have some sort of surge protection on the trunk I would look there and if that isn't it I would see if you have the same problem with only a butt set connected to the trunk (then let your provider know they need to fix it).
« Last Edit: April 11, 2012, 02:24:16 PM by ralph »

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Re: What is the reason of Phantom calls? Mitel 3300
« Reply #9 on: April 11, 2012, 02:25:04 PM »
There was a bug once in an old version of software where the embedded VM would ring the operators phone and disconnect.

Ralph

Offline martyn

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Re: What is the reason of Phantom calls? Mitel 3300
« Reply #10 on: April 11, 2012, 06:49:28 PM »

Quote
Hmm that gives me an idea for a problem that I'm having at the moment with one customer! They get one or two rings, and then the call stops. Given that it's so quick, they don't usually get the chance to see a number that is calling.



That could also be a trip ring on the LS trunks. If you have some sort of surge protection on the trunk I would look there and if that isn't it I would see if you have the same problem with only a butt set connected to the trunk (then let your provider know they need to fix it).
I can rule that one out as there are only SIP trunks on the system.  :)

Offline wiseguy

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Re: What is the reason of Phantom calls? Mitel 3300
« Reply #11 on: April 12, 2012, 09:47:57 AM »
Digital trunks is better ;) Try to capture the ringing with a CCS trace to see where or what is doing this.

Offline martyn

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Re: What is the reason of Phantom calls? Mitel 3300
« Reply #12 on: April 12, 2012, 07:49:39 PM »
SIP trace will do the trick, but I'm hesitant to beleive all of what is being reported so want to understand what happens first in this instance before going off on a wild goose chase.  :)

Offline milenmar

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Re: What is the reason of Phantom calls? Mitel 3300
« Reply #13 on: April 23, 2012, 07:54:09 AM »
We got the same symptoms on our system - turned out to be a analog port had been patched out for a Polycom conferencing unit but someone had plugged their PC into it - was causing phantom calls just like you said

Offline martyn

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Re: What is the reason of Phantom calls? Mitel 3300
« Reply #14 on: April 23, 2012, 07:26:03 PM »
Wow that's a bit of an out there one!


 

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