1. A system for applications involving various protocols comprising: an application subsystem in a converged messaging system comprising: an email application; an SMS application; a voice mail application; an MMS application; a visual voice mail application; and an instant messaging application; a management subsystem comprising: an operations and management tool for monitoring, troubleshooting, and optimizing performance of a network; a network estimation module for communicating information between multiple wireless nodes; a system management application for: gathering information from a plurality of network applications devices; and providing network administrators with information to facilitate managing the network; and a provisioning application for: configuring systems; and providing user with access to data and resources; and a messaging application broker that: provides an interface between the application subsystem and the management subsystem; receives a message notification from the management subsystem that comprises a class of service lookup application used to verify the class of service wherein the management subsystem processes each type of message as a service; interacts with a presence server to verify presence and may forward the message to a mobile content management system which may be used by a wireline user computer to retrieve messages depending on the verified presence; provides a Gi interface between the messaging subsystem and user devices; and provides a public interface between the messaging subsystem and public external networks.