Do you have a C2ENET-1 or a C2ENET-2 card? The C2ENET -2 card has NAT routing for a sub network... (http://xxx.xxx.xxx.xxx/setup/admin.ssi) I would make sure your internal network is setup correctly... I always use canyouseeme.org to check WAN ports after forwarding them to verify the service provider isn't blocking them... Another possible issue could be the IP table in the processor... setting the IP to the Phone on the local network will only allow local connections... I currently use "03 000.000.000.000 slave 00 server"... I hope this is helpful...
