ringback tone is delayed when calling to PSTN

Discussion in 'General' started by yo1111, Feb 28, 2009.

  1. yo1111

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    When I place a call through my trunk to PSTN, the phone being called rings, but the phone placing call don't get any ringback tone until approximately 20 seconds!

    So I don't know what is going on until somesone on the other end picks up the phone, or until after 20 seconds !
     
  2. danardf

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    Hi ...
    It's a gateway or PCI card?
     
  3. yo1111

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    It is a PCI TMP400 card with 2 fxo and 2 fxs
     

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