You are seeing the INVITEs reaching Karoo Bridge? If so can you attach your logs? Also a callflow ladder diagram would help get more info as to what is happening.

On 06/30/2011 01:11 AM, Roman Gelfand wrote:
I just ran a tcpdump and found that, in fact, sipx does send invites to the sbc. So, it is not sipx.

Sorry about that.

On Wed, Jun 29, 2011 at 7:02 AM, Roman Gelfand <[email protected] <mailto:[email protected]>> wrote:

    I have configured sipx outside calling using unmanaged gateway
    pointing to karoo bridge.  One nic is on the same lan as sipx and
    the other is public ip.  NAT traversal and server behind NAT is
    checked off.  Sip trunk role is off.
    If I completely reset all the devices and make outside call, the
    receiver hears ringing and picks up the call. However, no media
    traffic. This only happens on the first call after reset.
    Subsequent times the phone gets 408.  Interestingly enough,
    subsequent calls never reach sbc machine.
    Any help is greatly appreciated.
    Thanks in advance



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