System and method for providing end to end quality of service for cellular voice traffic over a data network

A method for providing end to end quality of service for cellular voice traffic over a data network, the method comprising:

• receiving outgoing cellular traffic associated with a cellular device at a network interface device;
• tagging the outgoing cellular traffic at the network interface device with a prioritization marking to produce prioritized data;
• transmitting the prioritized data to an access carrier network associated with providing an access line to the network interface device via a virtual circuit of the access line;
• maintaining, at the access carrier network, the prioritization marking of the outgoing cellular traffic for routing the outgoing cellular traffic through the access carrier network at a higher priority than lower level priority data;
• and
• handing off the prioritized data directly to a cellular service provider network associated with the cellular device via a directly connected network to network interface.