Abstract: The present invention relates to improvements in communication procedures, especially in networks which include at least one device which is capable of being manually switched to an off-line condition. In accordance with the invention, when a switch on such a device is thrown to the position which would place the device in an off-line condition, the device formulates and transmits a message to indicate that it is going to a temporary off-line condition. This message can be used at other devices which are connected in the communication network. Such a message can be employed at a network focal point for maintaining such a device in a polling loop regardless of the fact that the device may, for some period of time, fail to respond to any polls. Such a message can also be employed in any device which was in active communication with the device at the time it was placed in the temporary off-line condition to queue a restart request.

Abstract: A terminal connected to a data communication system and has an output device such as a printer or display and has a memory. The terminal stores the handshaking information received by the terminal from the data communication system as a communication session is established, translates the stored handshaking information into a suitable format for the output device, and supplies the translated data to the output device to inform the operator of the nature of the data communication system.