Cisco WCM300 - Channel Bonded Cable Modem Implementation Manual page 59

Chapter 4 Implementing and Configuring the Solution
Traffic from different Wideband SPAs cannot be mixed on the same QAM port.
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Scientific Atlanta DPC2505 and EPC2505 wideband cable modems support multicast traffic on the
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primary downstream channel only. These modems do not support multicast traffic on wideband
downstream channels.
OL-10705-02
Cisco Cable Wideband Solution Design and Implementation Guide, Release 1.0
Known Restrictions
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