The MIB Module for DS3/E3 interface configuration , statistics and Alarm configuration. This MIB is supported in T3/E3 service modules in MGX products. Some of the T3/E3 service modules(Cards) are: PXM1 : Processor Switch Module. CESM-T3E3: Circuit Emulation Service Module FRSM-VHS : Frame Relay Service Module. Includes T3 and Channelized T3 categories. FRSM-2CT3: Channelized FRSM Module SRM-3T3 : Service Resource Module Terminologies Used : SDH : SONET Digital Hierarchy PLCP : Physical Layer Convergence Procedure. BERT : Bit Error Rate Testing. FEAC : Far End Alarm Code. OOF : Out Of Frame. AIS : Alarm Indication Signal. LOF : Loss Of Frame. RAI : Remote Alarm Indication. HCS : Header Check Sequence HEC : Header Error Control MA byte : Maintenance and Adaptation byte Tx MA Byte: This is explained in ITU-T G.832 This Byte contains following fields: Payload type Payload dependent bits Timing maker bit Rx MA Byte: This is explained in ITU-T G.832 This Byte contains following fields: Payload type Timing maker bit