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786 posts

Ultimate Geek


# 21813 7-May-2008 15:13
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Hi all,
We've got a few cellphones at work, and a few days ago a worker came to us with an unusual problem.  She was receiving a lot of calls and voicemails from people (all over NZ), who said that she had tried to call them.  Their CallerID units were showing her cellphone number as a missed call, so they were "calling back".

Now our user knew that she hadn't called anyone, and no-one else had access to the phone.  A quick check of the call log showed that no outgoing calls had been placed.  She was receiving up to a dozen of these calls a day.  To make matters worse, this cellphone is designated as our "emergency" phone, so she had to drop what she was doing and answer it each time it rang.

Thankfully, a few callers left some clues as to what was happening.  It appears as though a tele-marketing firm based in India was the source of the calls.  The international prefix is not displayed on CallerID units here, so it only displayed the "local" Indian STD code and then the number, which resulted in the CallerID units displaying "02127xxxxxx".  As the people out there hit reply, they would dial our number, and be confused and annoyed that we hadn't actually called them.

Is there anything we can do?  Or are we at the mercy of the tele-marketers using a different originating phone number?  We may have to change numbers for this user, as they are being bombarded with "return calls", which are wasting everyone's time.

Does anyone here have a solution, or at least an understanding of how CallerID works when international borders are crossed?  I've contacted Vodafone, but they are effectively out of the loop with this, and Telecom were unable to help.


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Uber Geek


  # 129158 7-May-2008 15:41
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Telecom used to replace Intl numbers coming through its gateway with "0000". Detail

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WorldxChange

  # 129163 7-May-2008 16:01
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Basically there will be nothing that you can do you would have to know who is delivering the acll and through which network, there are mltiple carries in New Zealand now who can hand this call of locally and it could be coming from any one, some carriers will present international traffic as 0000 to avoid confusion but some don't have the capabilites to do this or are not bothered, others times offshore carriers may require you to present true CLI but this does appear to be very unfortunate due to it being an outsourced call centre, I would recommend trying Telecom first as they will generally be one of the major providers for inbound international and explaining your situation (you may get lucky) to see if they can take a look in their international area but it is a long shot as genearlly Telecom will present 0000.




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