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Outbound VOIP calls cut off after 20 seconds

  • studio2online
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17 Sep 2010 15:27 #63834 by studio2online
Outbound VOIP calls cut off after 20 seconds was created by studio2online
We have 7 Snom phones connecting to a brand new Draytek Vigor 2955 router. Most times (not every time) we make an outbound call (inbound calls fine) the call cuts off after 20 seconds.
I've set-up port forwarding, opened the necessary ports, disabled the data & call filters, disabled DoS, ensured SIP ALG is disabled.
Any suggestions?

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