| 摘要 |
PROBLEM TO BE SOLVED: To calculate an estimated conference enabled remaining time before starting a teleconference.SOLUTION: A portable communication terminal includes: means for collecting entry information including a terminal type of the portable communication terminal, display luminosity, a remaining battery capacitance and a charging state from the inside of the portable communication terminal before starting a teleconference connection; means for transmitting the entry information to a teleconference server; and means for displaying the estimated conference enabled residual time in a predetermined estimated conference state received from the teleconference server on a display section. The teleconference server includes: means for determining the terminal type of the portable communication terminal on the basis of the entry information received from the portable communication terminal before starting the teleconference connection; means for calculating the estimated conference enabled residual time in the predetermined estimated conference state on the basis of a power consumption table which is provided in the teleconference server beforehand, for each portable communication terminal type indicating power consumed by a teleconference for each terminal class, and the entry information; and means for transmitting the estimated conference enabled residual time to the portable communication terminal. |
