US 7,440,440 B1 · Method and system for device-based call park and pick-up

Abstract

A method for call parking in a network telephony system is disclosed. A first user agent and a second user agent establish a communication session, and the second user agent enters a call park number to initiate a call park of the communication session. Subsequently, the call park number and the location of the second user agent are sent to a server, which authorizes the second user agent for call parking. The server then registers the call park number, and the communication session between the first and second user agents is parked. When a third user agent wants to pick up the communication session, the third user agent calls the server by entering the call park number. The server then routes the third user agent to the second user agent, which in turn refers the third user agent to the first user agent. The first and third user agents then establish their own communication session, the communication session between the first and second user agents is terminated, and the call park number is deregistered.

Claims19

Dependent claims

A method for call parking, the method comprising the steps of:

establishing a first communication session between a first user agent and a second user agent in a network;
at the second user agent, initiating a call park for the first communication session by entering a call park number;
at a server in the network, registering the call park number as a reference for the first communication session;
responsive to registering the call park number at the server, parking the first communication session at the second user agent;
thereafter, at a third user agent in the network, entering the call park number;
responsive to entering the call park number at the third user agent, establishing a second communication session between the third user agent and the second user agent using the call park number;
sending to the third user agent from the second user agent an address of the first user agent;
establishing a third communication session between the third user agent and the first user agent using the address of the first user agent;
and
deregistering the call park number at the server.

7 more elements

A method for call parking in a network telephony system, the method comprising the steps of:

establishing a first communication session between a first user agent and a second user agent in a network;
at the second user agent, initiating a call park of the first communication session by entering a call park number;
sending the call park number from the second user agent to a server in the network;
at the server, authorizing the second user agent for call parking;
at the server, responsive to authorizing the second user agent for call parking, registering the call park number as a reference for the first communication session;
parking the first communication session at the second user agent;
thereafter, at a third user agent, entering the call park number;
responsive to entering the call park number at the third user agent, receiving a call at the server from the third user agent;
at the server, routing the call from the third user agent to the second user agent using the call park number;
establishing a second communication session between the third user agent and the second user agent;
sending to the third user agent from the second user agent an address of the first user agent by way of the second communication session;
establishing a third communication session between the third user agent and the first user agent using the address of the first user agent;
terminating the first communication session between the first user agent and the second user agent;
deregistering the call park number at the server;
and
terminating the second communication session between the second user agent and the third user agent.

13 more elements

A method for call parking in a SIP telephony system, the method comprising the steps of:

establishing a first communication session between a first user agent and a second user agent;
at the second user agent, initiating a call park of the first communication session by entering a call park number;
sending the call park number from the second user agent to a SIP proxy server;
at the SIP proxy server, authorizing the second user agent for call parking;
at the SIP proxy server, responsive to authorizing the second user agent for call parking, registering the call park number as a reference for the first communication session;
thereafter, at a third user agent, entering the call park number;
responsive to entering the call park number at the third user agent, receiving a call at the SIP proxy server from the third user agent;
at the SIP proxy server, routing the call from the third user agent to the second user agent using the call park number;
sending an address of the first user agent from the second user agent to the third user agent;
establishing a second communication session between the third user agent and the first user agent using the address of the first user agent;
deregistering the call park number at the SIP proxy server;
and
terminating the first communication session.

10 more elements

Dependencies are inferred from the claim text.

Method and system for device-based call park and pick-up

Life of this patent

Method and system for device-based call park and pick-up

Life of this patent

Abstract

Claims19