| 摘要 |
<p>A power management is provided to minimize power consumption on the IP telephony distribution system (10) supporting line-powered cable-modem subscriber units (16). The power saving techniques in the packet telephony system using alert queue (60). The alert queue (60) is established and segmented into a plurality of phases for selective activation, each phase having memory buffers for buffering packet telephony information communicated via the cable modem termination systems (CMTSs 28). The multiple cable modem subscriber units (16, 18) are divided into a plurality of alert phase groups, each alert phase group being associated with one of the plurality of phases of the alert queue. The VBC (62) may then be provided between the CMTS (28) and the subscriber units (16, 18) for transmitting control information.</p> |
