module openconfig-transport-line-common {

    yang-version 1;

    namespace
      "http://openconfig.net/yang/transport-line-common";

    prefix oc-line-com;

    import iana-if-type {
      prefix ift;
    }
    import openconfig-extensions {
      prefix oc-ext;
    }
    import openconfig-interfaces {
      prefix oc-if;
    }
    import openconfig-platform {
      prefix oc-platform;
    }
    import openconfig-types {
      prefix oc-types;
    }
    import openconfig-transport-types {
      prefix oc-opt-types;
    }

    organization "OpenConfig working group";

    contact
      "OpenConfig working group
www.openconfig.net";

    description
      "This module defines common data elements for OpenConfig data
models for optical transport line system elements, such as
amplifiers and ROADMs (wavelength routers).";

    revision "2017-09-08" {
      description
        "Correct bug with OSC interfaces";
      reference
        "0.3.1";

    }

    revision "2017-07-08" {
      description
        "Add monitor port type and refs to hw ports, ";
      reference
        "0.3.0";

    }

    revision "2017-03-28" {
      description
        "Added min/max/avg stats, status for media channels, OCM, APS";
      reference
        "0.2.0";

    }

    revision "2016-03-31" {
      description "Initial public release";
      reference
        "0.1.0";

    }

    oc-ext:openconfig-version "0.3.1";

    identity OPTICAL_LINE_PORT_TYPE {
      description
        "Type definition for optical node port types";
    }

    identity INGRESS {
      base OPTICAL_LINE_PORT_TYPE;
      description
        "Ingress port, corresponding to a signal entering
a line device such as an amplifier or wavelength
router.";
    }

    identity EGRESS {
      base OPTICAL_LINE_PORT_TYPE;
      description
        "Egress port, corresponding to a signal exiting
a line device such as an amplifier or wavelength
router.";
    }

    identity ADD {
      base OPTICAL_LINE_PORT_TYPE;
      description
        "Add port, corresponding to a signal injected
at a wavelength router.";
    }

    identity DROP {
      base OPTICAL_LINE_PORT_TYPE;
      description
        "Drop port, corresponding to a signal dropped
at a wavelength router.";
    }

    identity MONITOR {
      base OPTICAL_LINE_PORT_TYPE;
      description
        "Monitor port, corresponding to a signal used by an optical
channel monitor. This is used to represent the connection
that a channel monitor port is connected to. This
connection may be via physical cable and faceplate ports or
internal to the device";
    }
  }  // module openconfig-transport-line-common