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<div>Hi all,</div>
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<div>I have a OpenSIPS between SBC and Asterisk PBX. This SIP Proxy relay outbound calls from PBX to SBC.</div>
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<div>Some calls when it is answered SIP Proxy receives from SBC a REINVITE or INVITE in-dialog, sometimes those REINVITES make fail SIP Proxy and it doesn't relay.</div>
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<div>- In log:</div>
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<div>ERROR: core: udp_send: sendto (sock, 0xb5ec5464,938,0,0xb5f4950c, 16): Operation not permitted (1)</div>
<div>ERROR: tm: msg_send: udp_send failed</div>
<div>ERROR: tm: t_forward_nonack: sending request failed</div>
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<div>- In pcap I can see that SIP Proxy does not relay REINVITE and it returns "477 Send failed (477 / TM)"</div>
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<div>I have checked REINVITE SIP traces OK and KO but i can not see any different.</div>
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<div>What could be the problem?</div>
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<div>Thanks</div>
<div>Regards.</div>
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