Hello,
In labbing out a CSR 1000V, we ran into an issue where INVITE messages stopped being sent out when SIP control was configured for TCP, throwing the following error:
%SIP-3-INTERNAL: TCP_SOCKET_SEND_BLOCKED: connid=24, local_addr=192.168.6...
Well i feel rather sheepish... Security did have another firewall hiding in there. They whitelisted the source/dest on it and messages started flowing. Thank you for all the help.
The ITSP supports TCP transport. I've attached a pcap from a call attempt from the lab firewall. I'm also checking with our security team to make sure there's nothing else this needs to be whitelisted on.
It didn't let me attach a .cap file so adde...
Yes ITSP is 54.244.51.2, .1, and .0
Please let me know if you would still like the debug voice ccapi inout output and i can run out and generate another log.
I enabled "ccsip all" and "ip tcp transactions"and attached output. I did not see ccapi inout as a valid debug option. Below is the version currently running:
Cisco IOS XE Software, Version 16.03.05Cisco IOS Software [Denali], CSR1000V Software (X8...
