IMA Supports up to 8 T1, E1, ADSL or unchannelized links and up to 4 IMA groups with 1 to 8 links/group.Link and Group State Machines implemented on-chip requiring no real time software in the data path.Fully compliant with the ATM Forum Inverse Multiplexer for ATM (IMA) 1.1 specification and backward compatible to IMA 1.0.Supports both independent transmit clock (ITC) and common transmit clock (CTC) modes.Supports all IMA Group Symmetry modes: Symmetric/Asymmetric configuration and operation.Differential delay tolerance of 279 ms (for T1 links) and 226 ms (for E1 links).Performs IMA differential delay calculation and synchronization.Provides programmable limit on allowable differential delay and minimum number of links per group.Performs ICP and stuff-cell insertion and removal.Supports IMA frame length (M) equal to 32, 64, 128, or 256.Provides IMA layer statistic counts and alarms for support of IMA Performance and Failure Alarm Monitoring and MIB support.Provides per link counters for statistics and performance monitoring.
Typical Applications include:
DSLAMs.Wireless Basestations.Integrated Access Devices (IADs).Access Concentrators.
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||S/UNI-IMA8 [60 kB] PMC-E3273