Updated, now no calls


I frequently run through the updates that FreePBX tells me are available.
I rarely go through any testing. This is my home phone, with a single analog phone through a HandyTones.

Well, I just noticed that asterisk is not answering calls anymore.

My external call path is:
Phone number registered with google voice.
Google voice forward to ipkall (because asterisk will not answer google voice calls!)
ipkall makes a connection to asterisk.

When a call comes in asterisk logs this:
[2012-11-28 20:14:13] VERBOSE[3749] pbx.c: – Executing [2538020385@from-sip-external:1] NoOp(“SIP/”, “Received incoming SIP connection from unknown peer to [IPKALL number]”) in new stack

A few more logs, and this:
[2012-11-28 20:14:16] VERBOSE[3749] pbx.c: – Executing [s@from-sip-external:5] Playback(“SIP/”, “ss-noservice”) in new stack

Sometimes caller hears a ring, and sometimes just the “No service” message.
I have not made any configuration changes.

Any suggestions? Thanks!