I created 2 test installations of snomONE under OS X and 1 under Linux. Both OS X installs exhibited the behavior eventually (anywhere from 3 to 10 calls to the IVR after starting up). I couldn't make it happen with Linux.
Good, come right back with the destination
[8] 20120503160559: Call from an user 509
[8] 20120503160559: To user 500
[8] 20120503160559: Call state for call object 51: idle
[8] 20120503160559: Call state for call object 51: connected
[5] 20120503160559: set codec: codec pcmu/8000 is set to call-leg 50
[5] 20120503160559: Last message repeated 3 times
[8] 20120503160559: HTTP client: Connect to 10.89.20.90:80, pending requests 0
[8] 20120503160559: Received response code 200 with destination 512
Bad, comes right back with the error 57, also note the error 60, doesn't always happen right before a 57
[8] 20120503160614: Call from an user 509
[8] 20120503160614: To user 500
[8] 20120503160614: Call state for call object 52: idle
[8] 20120503160615: Call state for call object 52: connected
[4] 20120503160615: select returns error 60 (rtp)
[5] 20120503160615: set codec: codec pcmu/8000 is set to call-leg 51
[5] 20120503160615: Last message repeated 3 times
[8] 20120503160615: HTTP client: Connect to 10.89.20.90:80, pending requests 0
[5] 20120503160615: Could not send 535 bytes to 10.89.20.90, error code 57