[RTP] How to check if NAT router knows what ports to open?

Discussion in 'VOIP' started by Vincent Delporte, Dec 8, 2006.

  1. Hi

    I'm wondering how to check if a NAT router is SIP-friendly, ie. it can
    analyze SIP packets sent from the client to the other side?

    Should I look for UPnP, if indeed that's the indication that a NAT
    router can open incoming ports dynamically? The reason I ask, is that
    I have a Netgear router connected to an ADSL modem, with UPnP
    activated... but I still had to map ports for SIP clients inside to
    carry conversations.

    Vincent Delporte, Dec 8, 2006
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