Notification of toll free call charging status

DETAILED DESCRIPTION FIG.
1 is a block diagram of a telecommunications network.
Attached to the network are a conventional telephone 1 and a coin station 2 both connected to local exchange carrier network 10.
The local exchange carrier network is connected to a toll switched network 20 which in turn is connected to another local exchange carrier network 19.
Three possible destinations of a toll free call from one of the stations 1 or 2 are shown.
Destination 5 is connected to the same local exchange carrier network 10 as stations 1 and 2 and therefore a call to destination 5 from station 1 or 2 is a call which requires only the use of the local exchange carrier network 10.
A call to destination 6 requires the use of local exchange carrier network 10, toll switch network 20 and local exchange carrier network 19 which is connected to destination 6.
Destination 7 is directly connected to toll switch network 20 and therefore does not require that local exchange carrier network 11 be used.
Toll free calls such as 800 type calls are translated in the local exchange carrier network 10 to determine which toll switched network is to be used for accessing the dialed destination.
The establishment of connections to an 800 number is executed under the control of an intelligent network as shown in the block diagram of toll switched network 20.
Toll switched network 20 includes an ingress toll switch 21 connected to originating local exchange carrier network 10 and an egress toll switch 22 connected to terminating local exchange carrier 11.
The 800 number is translated in the Toll 800 data base which converts the 800 number a number that contains no routing information into a number having an area code and an office code which can be used for routing the call to a destination.
Existing 800 service data bases store information such as link identifiers for routing common channel signaling messages, and customer routing data to customize routing, for example, by day of week and time.
In addition, AT&T, for example, provides for six classes of services (COS) that permit different grades of service; each is designed to meet specific customer network management criteria