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Removing dash ("-") from UK BT Caller ID

Discussion in '3CX Phone System - General' started by johnandally, Nov 7, 2010.

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  1. johnandally

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    Hello.
    I have 3CX v9 (SP3) with a Sangoma PSTN gateway.

    In the UK the British Telecom Caller ID is detected and sent through to 3CX and appears on my Unidata WPU7700 handsets.

    Only problem is that the number comes through with a dash ("-") (in the form 02031-234567)
    The Unidata's phonebook only recognises numerals and the caller's name is only taken from the phonebook if the number is without dashes (eg 02031234567)

    Can anyone suggest a workaround for this to amend the BT CID from 02031-234567 to 02031234567 before 3CX sends to the handset?

    I can't find any options within the Sangoma Netborder Gateway that could strip out the dash before sending to 3CX.

    I've tried playing with the new 3CX v9 'Reformat Caller ID' feature (within the Edit Ports page of the Sangoma PSTN Gateway). I couldnt find any documentation on exactly how to do this and not sure if it is even possible but I couldn't manage any manipulation of the CID from here.

    Not sure if this is relevant....Checking the 'Inbound Parameters' page for the gateway I traced the BT Caller ID as been sent to "From : Display Name" SIP field which is "CallerName" caller's name (default: From-> display name).
    The "From : User Part" SIP field does not seem to receive any data.

    Finally I've tried everything to convince the Unidata Phone to ignore the dash and have finally ruled this out as being impossible!

    Any help would be very much appreciated. If anyone can think of a clever workaround or otherwise knows how to get 3CX to manipulate the CID in this way this would be great.

    Many thanks

    John
     
  2. leejor

    leejor Well-Known Member

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    Is the dash actually being sent by BT or being added by your gateway?
     
  3. johnandally

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    Good point!

    I'm fairly sure it's from BT as my old analog phones also show the dash on the caller display.
    I've also googled some old articles that also suggested this was the case.

    I guess it would have been easier to amend something in the gateway rules if the gateway was adding the dash?
     
  4. leejor

    leejor Well-Known Member

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    Well, after looking over BT document http://www.sinet.bt.com/227v3p5.pdf (see page 24). it looks like they can send a space or dash if they wish, i guess in your case, they are. I seem to recall something like this cropping up in the forum a long while ago as I'm sure I've read over that BT paper on CID. I can understand space in a British number, but a dash in a UK phone number, at least when written down or displayed on a business is rare. Maybe if you have a chat with them about it they can make a modification. I wouldn't count on it but, if you don't ask, the answer is always no.

    Perhaps someone else has found a way to "deal" with it.
     
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