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CableLabs PacketCable CMSS Overview Extensions to support Feature Control: Session parameter updates (UPDATE) for some call features, codec changes, FAX/modem, … SIP REFER and Replaces header for advanced call features; e.g. call transfer, call park, conference SIP SUBSCRIBE/NOTIFY to enable Message Waiting Indication and other “non-call” related features PacketCable 1.5 and SIP/CMSS |