Method and apparatus for establishing and facilitating a voice call connection from a client computer to a PSTN extension

A bridging apparatus comprising:

• a storage medium having stored therein a plurality of programming instructions;
• and
• an execution unit, coupled to the storage medium, to execute the plurality of programming instructions implementing a set of communication services on the bridging apparatus for establishing and facilitating a voice call for a client computer, including a service for receiving a notification from the client computer denoting the client computer's acceptance of an offer by a server to establish a voice communication session, said offer being electronically extended to said client computer by said server, and said notification being generated in response to a user of said client computer interacting with said electronically extended offer,
• the set of communication services further including a service for dynamically determining a destination PSTN extension associated with the offeror server in accordance with one or more attributes of the offeror server, and a service for controlling a computer telephony interface to establish a connection from the bridging apparatus to the dynamically determined destination PSTN extension for the client computer to route said voice call off of a packet switched network.