6. A method of providing a spoken language interpretation service in a public switched telephone network to a caller and a called party during a telephone call, comprising the steps of: receiving signals associated with a telephone call between a caller and a called party, the signals representing at least the caller's telephone number and the called party's telephone number; and automatically offering spoken language interpretation service to the caller if the caller's telephone number is stored in the network as a telephone number associated with a subscriber to the spoken language interpretation service by sending a message to the caller giving the caller an option to activate the spoken language interpretation service.
6. A method of providing a spoken language interpretation service in a public switched telephone network to a caller and a called party during a telephone call, comprising the steps of: receiving signals associated with a telephone call between a caller and a called party, the signals representing at least the caller's telephone number and the called party's telephone number; and automatically offering spoken language interpretation service to the caller if the caller's telephone number is stored in the network as a telephone number associated with a subscriber to the spoken language interpretation service by sending a message to the caller giving the caller an option to activate the spoken language interpretation service. 7. The method of claim 6, in which the providing step further comprises the step of receiving a message from the subscriber indicating a desire to activate the interpretation service and automatically routing the telephone call to a language interpretation platform in the network.