Call Over SIP Trunk Gives Busy Tone

[tcnagpure1]

Hi,

I have a lab setup with two cluster, over TLS SIP trunk. I have installed respective trust-certificates in each CM, and RG, RL, RP to route calls. When a call is made over the trunk, I see some signaling traffic over port 5061, however it gives a busy tone. I have verified the call flow using DNA. If anyone could help me with it?

                             -> CUCMxyz0 (pub)
CUCMabc (pub)--|
                             -> CUCMxyz1 (sub)

Appreciate help.

[Deepak Mehta]

They just look like options ping messages from one side to another.

If it is LAB , can you first try making non secure SIP trunk work between them.thanks