Caching for end-user systrems to reduce usage of access links to a communication network

An access system to host a file for an end-user system, wherein the end-user system is coupled to the access system over an access link and wherein the access system is coupled to a communication network, the access system comprising:

• a caching system configured to receive the file from the end-user system over the access link;
• a memory configured to store the file in the access system;
• the caching system further configured to receive a message from the communication network, wherein the message requests the file from the end-user system, and in response to the message, to determine if the file may be transferred to the communication network from the memory, and if the file may be transferred to the communication network from the memory, then to notify the end-user system that the file will be transferred from the memory in the access system to the communication network and to transfer the file from the access system to the communication network.

The access system of claim 22 wherein the caching system is configured to determine if the file should be stored in the memory based on whether the end-user system has a legal right to store the file in the memory in the access system.