Call Transfer - flash time

Discussion in '3CX Phone System - General' started by zadean, May 22, 2008.

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  1. zadean

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    Installed a Siemens Gigaset C450 as an extension. Documentation says: To transfer a call to another phone operating behind a PABX you have to set the flash time from the operating system. If it is set press the R key and dial the internal number (given from the PABX).
    How do I set the flash time on 3CX? Pressing R key doesnt work.

    Defalt Settings in phone are:
    DTMF Over VoIP Connections
    Send Settings : Audio

    HOOK FLASH:
    Application type : dtmf-relay
    Application signal: 16
     
  2. Nick Galea

    Nick Galea Site Admin

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    Flash is for analog phone systems. If only call transfer were that easy in SIP! :)

    VOIP phone systems use a SIP command for it. So not sure what exactly that phone is but that setting relates to connection to an analog PBX.
     
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  3. zadean

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    I have analogue lines as well as voip lines. Using a Grandstream 4104 gateway.
     
  4. Philco

    Philco Member

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    Hi Zadean. If your hand sets are VOIP/SIP types there should be a transfer button, or there may be a * command that will allow a transfer.

    On analogue phones into an ATA such as a Grandstream then the recall button (FLASH) or a star command is used, depending on whether a blind or attended transfer is required.

    Phil
     
  5. zadean

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    Hi Phil. I am using a SIP handset. (Siemens C450IP), it has a R button, but it doesnt work. In the handbook it says "To transfer a call to another phone operating behind a PABX you have to set the flash time from the operating system. If it is set press the R key and dial the internal number (given from the PABX). "
    I cannot see where to set this from 3CX.
     
  6. Philco

    Philco Member

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    Hi Zadean, I guess its not designed for transfering voip calls, which is surprising. The grandstream ATAs when on a VOIP call (in or out) recognise the recall button is pressed as a line break (equivalent to pressing on hook for several hundered ms) this gives a second VOIP dialing tone to transfer a call.

    This works too on Dect phones connected to their ATAs where the phone has a recall button.

    Phil
     
  7. AndreasMetal

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    Hey!

    Check this: http://www.voip-info.org/wiki/view/Siemens+Gigaset+C450IP ,the section "Enabling call transfer feature"
     
  8. AndreasMetal

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    Sorry, the preview message was for asterisk :(

    In AnalogPhones can Flash Time be setted from phones menu.

    Siemens C450IP has also webmanagment. It may has your requested feature!
     
  9. lino

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    Has anybody solved the problem of "R" Key on C450 Gigaset with 3CX?

    I cannot transfer any call, could you please help me.

    On 3cx PBX there is another key sequence to hold and tranfer calls?
     
  10. archie

    archie Well-Known Member
    3CX Support

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    3CX PBX doesn't use any key sequences to transfer. It process SIP REFER request to initiate transfer.
     
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  11. lino

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    Thanks Archie.

    So I cannot use Siemens C450 with 3Cx? .... The "r" key does not work on VOIP

    I cannot hold and transfer the call in any other mode?

    Lino
     
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