H.323 Entities

H.3 2 3: A C L O S E R L O O K

• Terminals (client endpoints)

  • Support real-time, two-way multimedia communication

• Gateways

  • “Translate” between packet and circuit-switch network

• MCU (Multipoint control units)

  • For conferences between 3 or more participants
  • Mandatory: MC + optional: MP

• Gatekeeper

  • For network/resource management and call control
  • Mandatory: address translation, admissions control, bandwidth control, zone management
  • Optional: call control signalling, call authorization, bandwidth management, call management

Source: RADVISION

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