The big difference is that sharing is now across multiple subscribers, as opposed to across multiple DEVICES belonging to a single subscriber. This has implications for advertisers, content providers, law enforcement and end-users themselves. NAT in residential cable modems and the like is often configurable by the subscriber. Service-provider NAT will offer less possibility for end-user CONFIGURATION. This means the subscriber's ability to enable incoming connections for applications like VoIP or gaming MAY be CURTAILED.

The big difference is that sharing is now across multiple subscribers, as opposed to across multiple devices belonging to a single subscriber. This has implications for advertisers, content providers, law enforcement and end-users themselves. NAT in residential cable modems and the like is often configurable by the subscriber. Service-provider NAT will offer less possibility for end-user configuration. This means the subscriber's ability to enable incoming connections for applications like VoIP or gaming may be curtailed.