Method and system for providing access to subscriber services

A providing a client to the service user in a telecommunications networks system and method. The Internet protocol telecommunications network, and a conference conf call between the meeting owners and multiple participants conference. The is dialog preset protocol (SIP) control signal and call to build and a network of control revises, an SIP registering message configuration of service provider's the serviceability information service for indicating load according and a second. Existence and instant message (PIM) server and registering message transmitting use, wherein the server for saving such as meeting system with registered the meeting tenderer the existence information and serviceability information. The PIM server is such as conference participants elastic service user informing a mark of service provider the register network. The PIM server is a load service information by to provide layer underloading mark of service provider balancing to the service providers between the user service load. A conference calling conf, wherein the conference and mark conference participant and a causing conference's standard, the meeting server marks each participants service CSCF, and participant, which exists service and can use, transmitting a request to each CSCF to inform the meeting server. When the predetermined technical participant exists and can use, the meeting server causing the meeting calling conf.