Sporadically we get 1 way audio when one party is outside our firewall.The caller is on NAT, and it works fine most of the time. Caller can hear the called party, same thing going the other direction. Caller can hear called party.Asterisk 13.9 on Deb..
Author : Brian Wilson
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Ive been getting slammed with these messages on my console lately.ed -1: Invalid argument[2016-05-31 10:09:40] WARNING[16249]: chan_sip.c:3775 __sip_xmit: sip_xmit of 0x7f05140803f0 (len 559) to 192.168.1.45:0 returned -1: Invalid argument[2016-05..