This enumeration defines the encoding law for a trunk.
- SL_ENCODING_LAW_INVALID
- The specified encoding law is invalid.
- SL_ENCODING_LAW_A_LAW
- The trunk is using A-law encoding (as defined in ITU-T G.711). This
is the usual case outside North America.
- SL_ENCODING_LAW_U_LAW
- The trunk is using μ-law encoding (as defined in ITU-T G.711). This
is the usual case in North America and Japan.
Note: The encoding
law is provided separately from the trunk interface type. This is because
there are (rare) cases when a T1 trunk is used with A-law encoding.