ASA 5516-X with SPA122 SIP not working

[Brendan Wood]

Since I've upgraded from the ASA5505 to the ASA5516-X, my Voip adapter no longer works.  It worked fine with my old ASA5505 but not since I've upgraded.

My VOIP adapter is a SPA122 from Cisco.  It's communicating via UDP on port 5060.  The settings on the SPA include "Nat mapping enable - yes, nat keep alive enable - yes".

The problem now is that my phone calls all last EXACTLY 20 seconds.  After this, the call just drops cold.  I checked the logs on the ASA and I can't see any messages about blocking or anything else.

I have checked the default inspection rules and SIP is listed there and enabled for UDP and TCP.

Please let me know what can be the problem here.

Thanks.

[Abheesh Kumar · Accepted solution]

Just try disabling SIP inspection from Global policy.

policy-map global_policy
class inspection_default
no inspect sip

HTH
Abheesh

[Brendan Wood]

This worked.  Calls through voip are back to normal.

Thank you!

[balaji.bandi]

can we have look your configuration, since you have mentioned call going through and and it was not last for 20min or so,