%SDP[n]

Refers to an entire nth SDP specification. Index n can be 1…∞.

%SDP[n][“Name”]

Refers to a header within an SDP.

%SDP[n][“Name”][“SessionHdrName”]

Refers to a session header (like media) within an SDP session.

%SDP[m][“s”][“m”][n]

Refers to nth media specification.

%SDP[l][“s”][“m”][n].FORMATS[n]

Refers to nth media format specification.

%SDP[j][“s”][“m”][k].ATTRIBUTES[“Name”][n]

Refers to nth instance of “Name” attribute in the kth media specification.

%SDP[m][“s”][“m”][n].CONNECTIONS[k]n]

Refers to the kth connection from nth media specification.