I'm trying to find some information about sleep/standby modes of ANY cable modems (DOCSYS 1.1 at least). I'd like to set up a system that has a minimum of power consumption. From what I've been able to determine, I can't find any modem that has some sort of sleepy mode on the cable network side of the world. They are always "on" and synced up on that WAN side (I assume so they can always respond to some sort of ping of the DOCSYS network.)
I've seen standby modes advertised, but that seems to only apply to some filtering of packets on the PC side.
In my perfect world, the modem would be asleep, drawing minimal power. It would wake up when addressed uniquely from the network head end, establish its connection, and then be available at full power mode. When done with a session, it would then go back to sleep.
Does anybody know of any modems out there capable of this kind of scheme?