摘要:
If a call session has been established between terminal apparatuses on the sending side and receiving side when a voice packet is received from the terminal apparatus on the receiving side, a firewall apparatus sends the received voice packet to the terminal apparatus on the sending side. On the other hand, if a call session has not been established when a voice packet is received, the firewall apparatus starts buffering received voice packets. When a call session is established, the firewall apparatus sends the buffered voice packets to the terminal apparatus on the sending side.
摘要:
If a call session has been established between terminal apparatuses on the sending side and receiving side when a voice packet is received from the terminal apparatus on the receiving side, a firewall apparatus sends the received voice packet to the terminal apparatus on the sending side. On the other hand, if a call session has not been established when a voice packet is received, the firewall apparatus starts buffering received voice packets. When a call session is established, the firewall apparatus sends the buffered voice packets to the terminal apparatus on the sending side.
摘要:
An intercept system includes: a call controller that controls a call between a plurality of communication devices connected through a packet network; a route setting device that sets a route along which communication on a call between the communication devices is relayed; a duplicating device that duplicates a packet to be intercepted; an acquiring unit that acquires communication device identification information for identifying positions on the packet network of the communication devices from the call controller; a setting unit that sets the route setting device in such a way that a packet received from one communication device is transmitted to the duplicating device as to communication on a call between the communication devices identified by acquired communication device identification information; and a returning unit that returns a received packet to the route setting device after duplicating the received packet by the duplicating device for use in interception.
摘要:
A communication system for calling a plurality of terminal devices in response to a single request of call connection, assigning, for a single terminal device which answered the call, a communication band to be occupied in a communication band which can be used, and establishing the call connection in the assigned communication band, the communication system includes a deriving section that derives a communication band required for the call connection of each of the terminal devices to be called when the request of call connection is received, a securing section that secures a communication band including the maximum width in each of the derived communication bands in the communication band which can be used; and an assigning section that assigns a communication band to be occupied in the secured communication band to the terminal device which answered the call.
摘要:
There is provided a base station apparatus which allocates communication bands for terminal units from an available communication band, and performs wireless communications with the terminal units using the allocated communication bands, including: a priority table storing priority information used for deriving a priority of the communication; a detecting part detecting a situation change concerning the communications; a band derivation part deriving communication bands required for the communications with terminal units to communicate, when the detecting part detects the situation change; a priority derivation part deriving priorities of the communications with the terminal units on the basis of the priority information stored in the priority table; and an allocating part allocating the communication bands derived by the band derivation part for the wireless communications with the terminal units in the order of descending priorities derived by the priority derivation part.
摘要:
A key management device for communicating with relay devices is provided, and one of the relay devices, which is communicating with a communication device based on master key information, transmits the master key information to the key management device. If the communication with the communication device has been enabled, the other relay devices makes a request to the key management device for transmission of the master key information. Then, the key management device transmits the master key information, which has been received from the one of the relay devices, to the other relay device, and then the other relay device can communicates with the communication device using the received master key information.
摘要:
A communication system for calling a plurality of terminal devices in response to a single request of call connection, assigning, for a single terminal device which answered the call, a communication band to be occupied in a communication band which can be used, and establishing the call connection in the assigned communication band, the communication system includes a deriving section that derives a communication band required for the call connection of each of the terminal devices to be called when the request of call connection is received, a securing section that secures a communication band including the maximum width in each of the derived communication bands in the communication band which can be used; and an assigning section that assigns a communication band to be occupied in the secured communication band to the terminal device which answered the call.
摘要:
A relay apparatus for relaying a packet in radio communication by a wireless terminal in a communication area includes a packet monitoring part for obtaining data on a bandwidth to be used in the radio communication by the wireless terminal from a packet to be relayed, a bandwidth managing part for calculating and recording a total bandwidth in use used for the radio communication by the wireless terminal from the obtained data on a bandwidth, a retransmission adjusting part for determining an upper limit of a packet retransmission number, in accordance with an amount of an available bandwidth obtained by excluding a total bandwidth in use from a maximum bandwidth, and a retransmitting part for retransmitting a packet in a range not exceeding the upper limit of the packet retransmission number. Consequently, the relay apparatus enables retransmission appropriately adaptable to a use situation of a bandwidth by wireless communication of a wireless terminal in a communication area.
摘要:
Method for altering service-provision sequence without leaving customers with a sense of unfairness. Question data Q1, Q2 containing question content, priority level, membership number, and other information is transmitted from questioner terminals 2a, b (#2, 5). An alter-sequence request to switch the sequential order of question data Q2 to a higher rank is transmitted from questioner terminal 2b to question administration server 1 (#7). An inquiry with questioner terminal 2a as to changing sequential order according to priority levels for question data Q1 and question data Q2 is conducted (#8). When a notice indicating that a sequence change will be permitted is transmitted from questioner terminal 2a (#9), the sequential orders for question data Q1 and for question data Q2 are interchanged, and question terminal 2b is notified to the effect that the sequence has been changed (#10).
摘要:
There is provided a base station apparatus which allocates communication bands for terminal units from an available communication band, and performs wireless communications with the terminal units using the allocated communication bands, including: a priority table storing priority information used for deriving a priority of the communication; a detecting part detecting a situation change concerning the communications; a band derivation part deriving communication bands required for the communications with terminal units to communicate, when the detecting part detects the situation change; a priority derivation part deriving priorities of the communications with the terminal units on the basis of the priority information stored in the priority table; and an allocating part allocating the communication bands derived by the band derivation part for the wireless communications with the terminal units in the order of descending priorities derived by the priority derivation part.