Which subsystem task is responsible for distributing the SCTP between the eNodeB and the MMEMGR tasks?

Question

Options

• AMME Manager
• BMME Demux Manager
• CSession Manager
• DIMSI Manager

• A
  3% (1)
• B
  93% (27)
• D
  3% (1)

Explanation

MME Demux Manager sits between the eNodeB-facing SCTP layer and the pool of MMEMGR tasks, acting as a demultiplexer that inspects incoming S1-AP messages and routes them to the correct MMEMGR instance - distributing load across the task pool is precisely what "demux" means architecturally.

Why the distractors are wrong:

• A (MME Manager / MMEMGR): This is the destination of the distributed messages, not the distributor - it handles NAS signaling and mobility state once traffic arrives.
• C (Session Manager): Responsible for PDN/bearer session lifecycle (GTP tunnels, EPS bearers), entirely separate from SCTP fan-out.
• D (IMSI Manager): Handles IMSI-based subscriber lookups and routing within the MME, not raw SCTP distribution from eNodeBs.

Memory tip: Let the name guide you - Demux = demultiplexer = splits one input into many outputs. Whenever a question asks "what distributes X between a source and multiple task instances," the answer is always the component with "Demux" in its name.

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