To provide an information call termination informing system and method for making a user capable of recognizing the presence/absence of storage information inside a communication network in a communication system for staring communication information inside the communication network.

The user A and the user B are provided with a first communication terminal 10 and a second communication terminal 11 for transmitting and receiving electronic mail with each other and they are connected through respective terminal adapter devices 35 and 13 to an ISDN network 14. The user A is connected with a third provider 37 for providing service by the internet with a charge from the first communication terminal 10 and the user B is connected with a second provider 16 from the second communication terminal 11. The third provider 37 is provided with a call setting part 38, and when the electronic mail addressed to the user A arrives through an internet network 17, stores the electronic mail and originates a call to the user A. In the terminal adapter device 35, by the termination of the call, at the time of matching with a caller's number set beforehand, an LED is made to flicker.