FRITZ!Box Fon ata 1020 - only one SIP call at a time

Discussion in 'UK VOIP' started by user #48853, Dec 13, 2008.

  1. user #48853

    user #48853 Guest

    I have FRITZ!Box Fon ata 1020 with firmware version 11.04.01. I cannot
    make simultaneous SIP calls on Fon 1 and Fon 2. It does not matter if
    the second call is incoming or outgoing, or which provider it is (I'm
    using SMSLISTO/BETAMAX and VOIP.CO.UK). The box rejects the additional
    incoming calls and sends secondary outgoing calls over PSTN. I've not
    experienced this limitation before with other FRITZ! devices. I wonder
    if the first call is hogging the codecs somehow, but I have no idea
    how check or to fix this. Anyone had this problem or has some insight?
    user #48853, Dec 13, 2008
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  2. O'Kenny, Sean, Dec 13, 2008
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