Updated to current a couple days ago, default dialplan, extensions are 
registered as 1001 and 1002.

tcpdump on the freeswitch host shows RTP going both ways to/from both 
phones.

This is running on CentOS, so your log and debug instructions don't make 
much sense, but I do have SIP tracing enabled... see 
http://pastebin.freeswitch.org/6694

The phones are on the 10.10.155.0/24 subnet, the switch is on 
198.202.199.1, but there's no NAT between, just a router... from the POV 
of the switch, it can see all the phones on the 10.10.155.0/24 network 
directly.

Matthew Kaufman