I have an Asterisk server setup on an internal network with a static internal IP address assigned to it, then an external IP address forwarded to that internal IP. The phones I have set to register with server show up in the SIP peers, but I keep getting the below error in the asterisk console:
Oct 12 07:35:13 NOTICE[2497]: chan_sip.c:10918 handle_request_subscribe: Failed to authenticate user "3924" <sip:3924@10.248.248.10>;tag=1A910BA5-BC667FDC for SUBSCRIBE
Oct 12 07:35:15 NOTICE[2497]: chan_sip.c:10918 handle_request_subscribe: Failed to authenticate user "3824" <sip:3824@10.248.248.10>;tag=6BCF4DE5-A4422F2E for SUBSCRIBE
Oct 12 07:35:17 NOTICE[2497]: chan_sip.c:10918 handle_request_subscribe: Failed to authenticate user "3924" <sip:3924@10.248.248.10>;tag=BFA91382-3946D11D for SUBSCRIBE
Oct 12 07:35:24 WARNING[2497]: chan_sip.c:1226 retrans_pkt: Maximum retries exceeded on transmission 68695509-77bc30bf-fa9eff3e@10.0.0.58 for seqno 4 (Critical Response)
Oct 12 07:35:27 WARNING[2497]: chan_sip.c:1226 retrans_pkt: Maximum retries exceeded on transmission ba08e611-d6a1d023-23e8ffd4@10.0.0.47 for seqno 4 (Critical Response)
Oct 12 07:35:28 WARNING[2497]: chan_sip.c:1226 retrans_pkt: Maximum retries exceeded on transmission b173e56-57ccdb4-e462aa77@10.0.0.58 for seqno 4 (Critical Response)
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