This object define the encapsulation type requested for the connection. rfc1483 - Multiprotocol Encapsulation over ATM Adaptation Layer 5 (no PPP), LLC Muxed. PPP VC Muxed - For VC Based Multiplexing, the carried network interconnect protocol is identified implicitly by the VC connecting the two ATM stations, i.e. each protocol must be carried over a separate VC. There is therefore no need to include explicit multiplexing information in the Payload of the AAL5 CPCS-PDU. This results in minimal bandwidth and processing overhead. PPP LLC Muxed - LLC (Low layer compatibility) Encapsulation is needed when several protocols are carried over the same VC. In order to allow the receiver to properly process the incoming AAL5 CPCS-PDU, the Payload Field must contain information necessary to identify the protocol of the routed or bridged PDU. In LLC Encapsulation this informationis encoded in an LLC header placed in front of the carried PDU.