Description: This attribute specifies whether the interface provides layer 2 and 3 services equivalent to the ITU-T network or user side of the connection. If this attribute is set to network, then the interface is master during channel negotiation, and uses network side layer 2 command/response bits. If this attribute is set to user, then the interface is slave during channel negotiation, and uses user side layer 2 command/response bits. Note that although a peer to peer protocol has no true network or user side, for channel negotiation and layer 2 handling the peer to peer and UNI protocols have identical function. A true UNI may also have uni-directional messages and/or message elements; the peer to peer has all elements bidirectional.