| 摘要 |
A system (10) comprises a plurality of devices (12s) which communicate over a network. At least one of the devices (12s) transmits information to at least one other device in information messages over a virtual circuit established therebetween using the network. The other device can transmit information concerning, for example, predetermined conditions in the other device in connection with the virtual circuit using signaling messages (33s), which are transmitted by the other device over the virtual circuit to the one device. The one device includes a.plurality of mailboxes (34s) associated with the virtual circuit, and the other device, that is, the device that is to transmit signaling messages (33s), includes a transmit signal queue (33) including a plurality of entries each associated with one of the mailboxes (34s). A processor (20) on the other device, to enable transmission of a signaling message including the condition information to b e transferred into the transmit signal queue entry associated with the mailbox. The other device, in turn, transmits the signaling message to the one device, which loads the condition information in the appropriate mailbox. A processor (20) on the one device retrieves the condition information from the mailbox to determine the condition information as communicated thereto by the other device.
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