SPA9000 ver 6.1.5 tries to register into ITSP every second when STUN server options are set.Register and inbound calls are sucsesfulSysLog Server shows:<151>[5060]STUN trying 0<151>[5060]STUN trying 1<151>[2]REG: STUN c0a80148->ba5c9a64, 5060->5060<1...