US Patent 8942686 Providing and managing bypass of enhanced services

A communication environment includes of one or more subscriber terminals capable of initiating emergency voice calls over a telephony network. The subscriber terminal further send messages over either a data network or a telephony signaling network to a communication management system. The communication management system receives messages from a subscriber terminal, either via a data network or a telephony signaling network. It also consists of one or more telephony switching nodes capable of querying the emergency context node for a called party emergency context. It also consists of one or more servers that provide advanced call control services.