Try1) link gateway to "internal" profile;2) create dialplan with name "provider_inbound_calls" and add required extensions;3) create user "provider_gw1" in directory with attribute cidr="10.7.1.60/32" (value from you example), with random value in param "password", and "provider_inbound_calls" value in variable "user_context"After it you can make inbound call from.If provider has several gateways, add user record in directory for each gateway.
Sergey