FIELD: engineering of systems for transmitting messages.
SUBSTANCE: method for processing request from first terminal for setting up communication session between first terminal and second terminal, while first terminal and second terminal operate to maintain communication via communication network, method includes receipt from communication network of a request from first terminal for setting up communication session to second terminal, determining whether second terminal can be accessed for maintaining communication session, and if second terminal is determined as inaccessible for maintaining communication session, then data set address appropriate for second terminal is sent to first terminal.
EFFECT: increased information capacity of transmitted messages.
4 cl, 2 dwg
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