Method of monitoring calls in an internet protocol (IP)-based network
First Claim
1. A method of monitoring a call with an Internet Protocol (IP) client in an IP-based network having a Gatekeeper that controls the network, a plurality of access routers that provide access to the network, and a Monitoring Station having monitoring facilities and a database of IP clients to be monitored, said method comprising:
- receiving an access request from the IP client at the Gatekeeper;
sending a query from the Gatekeeper to the Monitoring Station asking whether the IP client is to be monitored;
receiving a reply sent from the Monitoring Station at the Gatekeeper indicating that the IP client is to be monitored and providing an IP address where monitored packets are to be sent; and
sending a monitoring request from the Gatekeeper to an access router associated with the IP client, said request identifying the IP client to be monitored, instructing the access router to monitor the IP client, and providing the IP address where monitored packets are to be sent;
receiving an acknowledgment message from the access router at the Gatekeeper; and
sending an admission confirm message from the Gatekeeper to the IP client when the acknowledgment message has been received from the access router.
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Accused Products
Abstract
A method of monitoring a call with a mobile terminal (MT) in an Internet Protocol (IP)-based network having a Gatekeeper that controls the network, a plurality of access routers that provide access to the network, and a Monitoring Station having monitoring facilities and a database of MTs to be monitored. When the MT sends an Admission Request message to the Gatekeeper, the Gatekeeper sends a query to the Monitoring Station asking whether the MT is to be monitored. The Monitoring Station sends a reply to the Gatekeeper indicating that the MT is to be monitored and providing an IP address where monitored packets are to be sent. The Gatekeeper then sends a monitoring request message to the access router associated with the MT. The request identifies the MT to be monitored, instructs the access router to monitor the MT, and provides a unique call identification (Call ID) and the IP address where monitored packets are to be sent. When the access router detects a packet associated with the MT, the router sends all packets associated with the MT to the Monitoring Station. The method also controls monitoring during intra-domain and inter-domain handoffs of the MT.
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Citations
24 Claims
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1. A method of monitoring a call with an Internet Protocol (IP) client in an IP-based network having a Gatekeeper that controls the network, a plurality of access routers that provide access to the network, and a Monitoring Station having monitoring facilities and a database of IP clients to be monitored, said method comprising:
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receiving an access request from the IP client at the Gatekeeper;
sending a query from the Gatekeeper to the Monitoring Station asking whether the IP client is to be monitored;
receiving a reply sent from the Monitoring Station at the Gatekeeper indicating that the IP client is to be monitored and providing an IP address where monitored packets are to be sent; and
sending a monitoring request from the Gatekeeper to an access router associated with the IP client, said request identifying the IP client to be monitored, instructing the access router to monitor the IP client, and providing the IP address where monitored packets are to be sent;
receiving an acknowledgment message from the access router at the Gatekeeper; and
sending an admission confirm message from the Gatekeeper to the IP client when the acknowledgment message has been received from the access router. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of handing off a monitored mobile terminal (MT) in an Internet Protocol (IP)-based network, said method comprising:
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handing off the MT from a first base station to a second base station, the first base station being controlled by a first radio network controller (RNC) in a first Gatekeeper domain, and the second base station being controlled by a second RNC in a second Gatekeeper domain, sending a notification from the first RNC to the second RNC that the MT is being monitored, said notification including a unique call identification (Call ID) and an IP address of a Monitoring Station where monitored packets are to be sent;
sending a monitoring request from the second RNC to the second base station, said request identifying the MT to be monitored, instructing the base station to monitor the MT, and providing the Call ID and the IP address of the Monitoring Station;
sending by the second base station, media packets having the MT address as a source address or destination address to the Monitoring Station;
sending the unique Call ID and a new transport address for the MT from the second RNC to the second Gatekeeper;
sending the unique Call ID and the new transport address for the MT from the second Gatekeeper to the Monitoring Station;
sending an access request from the MT to the second Gatekeeper; and
allocating bandwidth to the MT by the Gatekeeper. - View Dependent Claims (13, 14, 15, 16)
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17. A method of monitoring a call with a mobile terminal (MT) and routing the monitored call to a Monitoring Station having monitoring facilities and a database of MTs to be monitored, said method being performed within a Gatekeeper in an Internet Protocol (IP)-based network, and comprising the steps of:
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receiving in the Gatekeeper, a network access request from the MT;
sending a query from the Gatekeeper to the Monitoring Station asking whether the MT is to be monitored;
receiving in the Gatekeeper, a reply from the Monitoring Station indicating that the MT is to be monitored and providing an IP address where monitored packets are to be sent; and
sending a monitoring request from the Gatekeeper to an access router providing the MT with access to the network, said request identifying the MT to be monitored, instructing the access router to send any packets associated with the MT to the Monitoring Station, and providing a unique call identification (Call ID) and the IP address where monitored packets are to be sent.
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- 18. A Gatekeeper acting to send a query to a Monitoring Station asking whether an IP client is to be monitored in response to a receipt of an access request from the IP client, wherein the Gatekeeper receives a reply from the Monitoring Station indicating that the IP client is to be monitored and providing an Up address where monitored packets are to be sent, the Gatekeeper further acting to send a monitoring request to an access router associated with the IP client, said request identifying the IP client to be monitored, instructing the access router to monitor the IP client, and providing the IP address where monitored packets are to be sent, the Gatekeeper further receives an acknowledgment message from the access router, sends an admission confirm message to the IP client when the acknowledgment message has been received from the access router.
Specification