Method for telephony client synchronization in telephone virtualization

摘要

A method is provided for the use of a signaling protocol stack by telephony applications which run on different system software images. When a telecommunications session is conducted by a first telephony application, the first telephony application typically controls the state of the telecommunications session through a signaling protocol stack executing on the same system software image as the first telephony application. When control over the telecommunications session is passed from the first telephony application to a second telephony application, the second telephony applications begins controlling the state of the telecommunications session through the same signaling protocol stack by using remote procedure calls.

主权项

1. A method comprising:
changing a current communications protocol state of a communications session from a first communications protocol state to a second communications protocol state with a first telephony application running on a first system software environment at a terminal, wherein the current communications protocol state is changed by the first telephony application directly executing a first routine provided by a shared signaling protocol stack running on a virtualization layer at the terminal, and wherein the first system software environment and the second system software environment are both running on a same system software environment; and changing the current communications protocol state of the communications session from the second communications protocol state to a third communications protocol state with a second telephony application running on a second system software environment at the terminal, wherein the current communications protocol state is changed by the second telephony application directly executing a second routine provided by the shared signaling protocol stack running on the terminal, and wherein the shared signaling protocol stack is shared by the first system software environment and the second system software environment.