module fujitsu-otn-otu-interfaces {

    yang-version 1;

    namespace
      "urn:fujitsu:params:xml:ns:yang:interface:otu";

    prefix otu;

    import ietf-interfaces {
      prefix if;
    }
    import fujitsu-entity-states {
      prefix entity-states;
    }
    import fujitsu-entity-maintenance-loopback {
      prefix fujitsu-loopback;
    }
    import fujitsu-gcc {
      prefix fujitsuGcc;
    }
    import fujitsu-otn {
      prefix otn;
    }
    import fujitsu-performance-monitoring-typedefs {
      prefix pmtypedefs;
    }
    import fujitsu-ains-keywords {
      prefix ains;
    }

    organization "Fujitsu Ltd.";

    contact
      "Fujitsu Ltd.
     
     Address: 2801 Telecom Parkway
              Richardson, Texas 75082
     
     Tel: +1-800-USE-FTAC (1-800-873-3822)
     Email: ftac@fnc.fujitsu.com
     Web: www.fujitsu.com/us/services/telecom";

    description
      "This module contains YANG definitions 
     for the OTU Interfaces of an Optical White Box (OWB).
     
     Copyright (c) 2015 Fujitsu Ltd.
     All rights reserved. ";

    revision "2018-01-09" {
      description " Added more fec types";
    }

    revision "2017-05-02" {
      description
        " Added AINS for otu container";
    }

    revision "2017-01-23" {
      description
        "Description changed for degthr.";
    }

    revision "2016-06-01" {
      description
        "Added more fec values. Added differential-decode, auto-rx, auto-tx, otu-notif";
    }

    revision "2015-05-12" {
      description "Initial revision.";
    }


    identity otu-rate-identity {
      description
        "A unique rate identification of the OTU.";
    }

    identity OTU4 {
      base otu-rate-identity;
      description "Identity for an OTU4";
    }

    identity OTU3 {
      base otu-rate-identity;
      description "Identity for an OTU3";
    }

    identity OTU2 {
      base otu-rate-identity;
      description "Identity for an OTU2";
    }

    identity OTU2e {
      base otu-rate-identity;
      description "Identity for an OTU2e";
    }

    identity OTU1 {
      base otu-rate-identity;
      description "Identity for an OTU1";
    }

    identity OTU0 {
      base otu-rate-identity;
      description "Identity for an OTU0";
    }

    identity OTUflex {
      base otu-rate-identity;
      description "Identity for an OTUflex";
    }

    grouping block-base-ber-threshold {
      leaf degthr {
        type int16 {
          range "-9..2";
        }
        default "0";
        description
          "DEGTHR:Degraded defect one-second Errored Block Count threshold
         DEGTHR specifies the exponent part X of 10^X [%].";
      }

      leaf degm {
        type int8 {
          range "2..10";
        }
        default "10";
        description
          "DEGM:Degraded defect consecutive one-second monitoring intervals";
      }
    }  // grouping block-base-ber-threshold

    grouping otu-attributes {
      description "OTU attributes";
      leaf rate {
        type identityref {
          base otu-rate-identity;
        }
        description
          "rate identity of the OTU. 'identityref' is used
         to allow to extend for future higher rates";
      }

      uses entity-states:oper-status;

      uses entity-states:admin-status {
        refine admin-status {
          default "down";
          mandatory false;
        }
      }

      uses otn:tti-choice;

      leaf direction {
        type enumeration {
          enum "uni-rx" {
            value 0;
            description
              "unidirectional receive only";
          }
          enum "uni-tx" {
            value 1;
            description
              "unidirectional transmit only";
          }
          enum "bi" {
            value 2;
            description "bidirectional";
          }
        }
        description "direction of interface";
      }

      uses block-base-ber-threshold;

      leaf circuit-id {
        type string {
          length "0..45";
        }
        description
          "circuit identifier/user label";
      }

      leaf fec {
        type enumeration {
          enum "off" {
            value 0;
            description "fec off";
          }
          enum "rsfec" {
            value 1;
            description "rsfec";
          }
          enum "sdfeca1" {
            value 2;
            description "Clariphy SDFEC";
          }
          enum "efec" {
            value 3;
            description "G.975.1 I.4";
          }
          enum "ufec" {
            value 4;
            description "G.975.1 I.7";
          }
          enum "sdfec" {
            value 5;
            description "Soft Decision FEC";
          }
          enum "sdfecb1" {
            value 6;
            description "SDFEC with SCFEC";
          }
          enum "scfec" {
            value 7;
            description "Stair case FEC";
          }
          enum "hgsdfec" {
            value 8;
            description
              "SDFEC 16% with RSFEC";
          }
          enum "hgsdfec2" {
            value 9;
            description
              "SDFEC 23% with RSFEC";
          }
        }
        description
          "Forward Error Correction";
      }

      leaf differential-decode {
        type enumeration {
          enum "off" {
            value 0;
            description
              "differntial decode off";
          }
          enum "on" {
            value 1;
            description
              "differntial decode on";
          }
        }
        description "Differential Decode";
      }

      leaf auto-rx {
        type boolean;
        description
          "enable/disable generation of transient condition when
         the value of the TTI changes.";
      }

      leaf auto-tx {
        type boolean;
        description
          "enable/disable automatic population of outgoing TTI";
      }

      uses pmtypedefs:pm-info;
    }  // grouping otu-attributes

    augment /if:interfaces/if:interface {
      container otu {
        when "../if:type = 'ianaift:otnOtu'";
        presence
          "Attribute Nodes for Optical Channel Transport Unit (OTU)";
        description
          "Optical Channel Transport Unit (OTU)";
        uses fujitsu-loopback:maint-loopback;

        uses ains:ains-prov-keywords;

        leaf actual-vstimer {
          type string {
            pattern
              "([0-4][0-8])-([0-5][0-9])";
          }
          config false;
          description
            "The amount of time a valid state timer has been running uninterrupted.
           This timer is in the format <hh>-<mm>.";
        }

        uses otu-attributes {
          refine oper-status {
            config false;
          }
        }

        list list-gcc {
          key "gccType";
          description " List of GCC0s";
          uses fujitsuGcc:gcc-group;
        }  // list list-gcc
      }  // container otu
    }

    notification otu-notif {
      leaf name {
        type leafref {
          path "/if:interfaces/if:interface/if:name";
        }
      }

      container otu {
        uses ains:ains-prov-keywords;

        leaf actual-vstimer {
          type string {
            pattern
              "([0-4][0-8])-([0-5][0-9])";
          }
          config false;
          description
            "The amount of time a valid state timer has been running uninterrupted.
           This timer is in the format <hh>-<mm>.";
        }

        uses otu-attributes;
      }  // container otu
    }  // notification otu-notif
  }  // module fujitsu-otn-otu-interfaces