Configurations to allow VOIP traffic through ASA

[sgguy]

Hey guys, I'm a beginner at this, hope y'all can help point me in the right direction.

I have a topology like this:

Softphone(CIPC) --- Switch --- ASA --- Router (CME)

I can't register the softphone with the CME manager on the router, as the ASA is blocking some traffic that I'm not sure of.

How can I go about doing this? 

Thanks in advance.

[Anthony Holloway]

There's kind of a lot to consider here. Uhm, do you have SIP/SCCP inspection turned on so the ASA can "detect" the control messaging back and forth?

[sgguy]

Yeah, I have configured inspect sip, skinny, rtsp, mgcp and h323. 

[TONY SMITH]

What I'd suggest is to take a Wireshark capture on the PC running CIPC, then you can see what it's trying to do and what isn't working.  A quick test on one of my installs shows it uses HTTP and other TCP, not just SCCP.