LMI Types

Three types of LMI are found in Frame Relay network implementations:

• ANSI T1.617 (Annex D)— Maximum number of connections (PVCs) supported is limited to 976. LMI type ANSI T1.627 (Annex D) uses DLCI 0 to carry local (link) management information.

• ITU-T Q.933 (Annex A)— Like LMI type Annex D, the maximum number of connections (PVCs) supported is limited to 976. LMI type ITU-T Q.933 (Annex A) also uses DLCI 0 to carry local (link) management information.

• LMI (Original)— Maximum number of connections (PVCs) supported is limited to 992. LMI type LMI uses DLCI 1023 to carry local (link) management information.

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