30 Aug
2018
30 Aug
'18
3:08 a.m.
Hello All,
I have had an issue for quite some time where I needed to open two UDP ports (via LISTEN)
for some softphone UAC's to stay connected. Funny enough there is one Provider that
works with the Single UDP. I think I finally see why I was needing two listening UDP
ports. When the ACK is returning from Asterisk to Kamailio, the ACK is coming back as
protocol TCP, not SIP, causing the call to drop. I finally realized this but I am not
sure what would cause this and why one provider phone works but not the others. Once this
is resolved, I may actually say...It works!
Thank you,
-Steve