att.nodes.ims.ICSCF:
  derived_from: tosca.nodes.SoftwareComponent
  capabilities:
    pcscf_endpoint:
      type: tosca.capabilities.Endpoint
      relationship: tosca.relationships.ConnectTo
      occurrences: [0, UNBOUNDED]  
      description: Connection with one ore more P-CSCF functions 
  requirements:
    hss_endpoint: 
      capability: tosca.capabilities.Endpoint  
      node: att.nodes.ims.HSS
      relationship: tosca.relationships.ConnectsTo