I have in my name server the lines: trace-intl.net: _sip._udp.trace-intl.net. IN SRV 20 0 5062 dns.trace-int.net. trace-intl.net-internal: _sip._udp IN SRV 20 0 5062 voip but on the same machine another domain runs with the same lines for port 5060 My intention was to use trace-intl.net for Openser on 5062, while Asterisk rmains on 5060. It seems, that this lines convert all tries to connect at 5062 to connect to 5060. Could that be? I have now disabled the lines ( _sip._udp ....) for Asterisk, but still receive the error: Oct 25 08:17:36 viop2 /usr/local/sbin/openser[9142]: Maxfwd module- initializing Oct 25 08:17:36 viop2 /usr/local/sbin/openser[9142]: ERROR: udp_init: bind(5, 0x622a04, 16) on 127.0.0.1: Address already in use How can I solve that? bye Ronald Wiplinger