Half-duplex communication system, half-duplex communication device, communication content confirmation method, and its program

A non-transitory computer readable recording medium storing a communication content confirmation program for performing one-to-N communications, one user terminal being a calling terminal and a second user terminal being a receiving terminal, the program causing a computer to perform:

• a function of recording the communication content of one-to-N communications in a communication record database by associating the communication content with an identifier identifying a user terminal;
• a function of writing and reading out the communication content to and from the communication record database while associating the communication content with the identifier;
• a function of outputting the communication content from the communication record database in accordance with a confirmation request received from the second user terminal, and transmitting the communication content to the second user terminal sending the confirmation requesting;
• and
• when relaying the communication content received from the calling terminal to the receiving terminal while associating the communication content with an identifier of the calling terminal, the program further causing a computer of the user terminal to perform:
• a function of, when a situation where communication contents of one-to-N communications are not transmitted to any of the plurality of user terminals occurs, records the communication content which has not been transmitted while associating the communication content with the identifier of the user terminal to which the communication content has not been transmitted in a non-transmission record data map provided beforehand:
• a function of, when the user terminal identified by the identifier recorded in the non-transmission record data map has completed confirmation of the communication record of one-to-N communications or when the communications have ended, reading out the communication content recorded in the non-transmission record data map, which has not been transmitted and transmitting it to the user terminal to which the communication content has not been transmitted;
• a function of, when the communication content which has not been transmitted is transmitted to the user terminal to which the communication content has not been transmitted, erasing the transmitted communication content from the non-transmission record unit;
• and
• a function of recording the communication content when the user terminal is making a call as a calling terminal in a communication record buffer, and recording the relayed communication content in the communication record buffer while associating the communication content with the identifier of the calling terminal.

A communication content confirmation method for performing one-to-N communications, one user terminal being a calling terminal and a second user terminal being a receiving terminal, the method comprising:

• recording a communication content of one-to-N communications in a communication record database by associating the communication content with an identifier identifying a user terminal;
• writing and reading out the communication content to and from the communication record database while associating the communication content with the identifier;
• outputting the communication content from the communication record database in accordance with a confirmation request received from the second user terminal, and transmitting the communication content to the second user terminal sending the confirmation requesting;
• and
• when relaying the communication content received from the calling terminal to the receiving terminal while associating the communication content with an identifier of the calling terminal,
• storing, when a situation where communication contents of one-to-N communications are not transmitted to any of the plurality of user terminals occurs, records the communication content which has not been transmitted while associating the communication content with the identifier of the user terminal to which the communication content has not been transmitted in a non-transmission record data map provided beforehand;
• reading out, when the user terminal identified by the identifier recorded in the non-transmission record data map has completed confirmation of the communication record of one-to-N communications or when the communications have ended, the communication content recorded in the non-transmission record data map, which has not been transmitted, and transmitting it to the user terminal to which the communication content has not been transmitted;
• and
• erasing, when the communication content which has not been transmitted is transmitted to the user terminal to which the communication content has not been transmitted, erases the transmitted communication content from the non-transmission record unit, and
• recording the communication content when the user terminal is making a call as a calling terminal in a communication record buffer, and recording the relayed communication content in the communication record buffer while associating the communication content with the identifier of the calling terminal.

A half-duplex communication system comprising:

• a plurality of user terminals;
• and
• half-duplex communication means for controlling one-to-N communications, one of the user terminals being a calling terminal and a second user terminal being a receiving terminal, wherein the half-duplex communication device includes:
• a communication record database which stores a communication content of one-to-N communications while associating the communication content with an identifier identifying a user terminal for performing one-to-N communications;
• communication record means for writing and reading out the communication content to and from the communication record database while associating the communication content of one-to-N communications with the identifier;
• and
• session management means for outputting the communication content received from the calling terminal to the communication record means while associating the communication content with an identifier of the calling terminal, causing the communication record means to read out the communication content from the communication record database in accordance with a confirmation request received from the second user terminal, and transmitting the communication content to the second user terminal sending the confirmation request,
• wherein the session management means includes a unit which relays the communication content received from the calling terminal to the receiving terminal while associating the communication content with the identifier of the calling terminal;
• a non-transmission record unit which, when a situation where communication contents of one-to-N communications are not transmitted to any of the plurality of user terminals occurs, records the communication content which has not been transmitted while associating the communication content with the identifier of the user terminal to which the communication content has not been transmitted in a non-transmission record data map provided beforehand;
• a non-transmitted content transmission unit which, when the user terminal identified by the identifier recorded in the non-transmission record data map has completed confirmation of the communication record of one-to-N communications or when the communications have ended, reads out the communication content recorded in the non-transmission record data map, which has not been transmitted, and transmits it to the user terminal to which the communication content has not been transmitted;
• and
• a non-transmission record erasing unit which, when the communication content which has not been transmitted is transmitted to the user terminal to which the communication content has not been transmitted, erases the transmitted communication content from the non-transmission record unit, and
• wherein the user terminal includes a communication record buffer which stores the communication content when the user terminal makes a call as a calling terminal, and stores the communication content relayed by the session management means while associating the communication content with the identifier of the calling terminal.