| 摘要 |
A multi-line ADSL modem ( 12 ) and network ( 10 ) whereby the multi-line ADSL modem ( 12 ) has connections to several ADSL modems ( 14 ) at a central office (CO) ( 16 ) through a master loop ( 18 ), shared loops ( 20, 22 ), and/or broadcast loops ( 84 ). The master loop ( 18 ) provides the basic connection between the multi-line ADSL modem ( 12 ) and the CO modem ( 14 ) at the central office ( 16 ) while maintaining regular telephone service. The shared loops allow the multi-line ADSL modem to share the transmission capacity with other modems. The multi-line ADSL modem is able to receive broadcast data from the central office where several loops are configured as a broadcast loop for downstream transmission only, but which can also be configured for upstream communication transmission only or in combination with downstream transmission to provide bi-directional broadband communications.
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