module openconfig-transport-types {

    yang-version 1;

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

    prefix oc-opt-types;

    import openconfig-platform-types {
      prefix oc-platform-types;
    }
    import openconfig-extensions {
      prefix oc-ext;
    }
    import openconfig-types {
      prefix oc-types;
    }

    organization "OpenConfig working group";

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

    description
      "This module contains general type definitions and identities
for optical transport models.";

    revision "2024-06-28" {
      description
        "Add ETH_25GBASE_LR and ETH_25GBASE_SR PMD types.";
      reference
        "0.25.0";

    }

    revision "2024-05-13" {
      description
        "Fix the QSFP56_DD description as it is meant to be generic.";
      reference
        "0.24.1";

    }

    revision "2024-03-20" {
      description
        "FlexO support, 800G trib protocol, and OSFP
description update for 800G.";
      reference
        "0.24.0";

    }

    revision "2024-03-12" {
      description
        "Add TRIBUTARY_RATE_CLASS_TYPE's up to 3200G to support
mating of two 1600G line rates.";
      reference
        "0.23.0";

    }

    revision "2024-01-17" {
      description
        "Update loopback-mode types.";
      reference
        "0.22.0";

    }

    revision "2024-01-16" {
      description
        "Added form factors QSFP28_DD and CSFP.
Added new PMDs: ETH_100GBASE_ER4L (MSA 100GBASE-ER4 Lite),
ETH_1GBASE_LX10.
Added References for 100GBASE-CR4 and 40GGBASE-CR4 for DACs";
      reference
        "0.21.0";

    }

    revision "2023-08-03" {
      description
        "Add QSFP56 and QSFP56_DD form factor identities and
deprecated QSFP56_DD_TYPE1 and QSFP56_DD_TYPE2 form factor identities.";
      reference
        "0.20.0";

    }

    revision "2023-07-24" {
      description
        "Add SFP_DD and DSFP form factor identities.";
      reference
        "0.19.0";

    }

    revision "2023-02-08" {
      description
        "Add ETH_100GBASE_DR PMD type";
      reference
        "0.18.1";

    }

    revision "2022-12-05" {
      description "Fix trailing whitespace";
      reference
        "0.17.1";

    }

    revision "2022-10-18" {
      description
        "Add ETH_400GMSA_PSM4 PMD type";
      reference
        "0.17.0";

    }

    revision "2022-09-26" {
      description
        "Add SFP28 and SFP56 form factor identities.";
      reference
        "0.16.0";

    }

    revision "2021-07-29" {
      description
        "Add several avg-min-max-instant-stats groupings";
      reference
        "0.15.0";

    }

    revision "2021-03-22" {
      description
        "Add client mapping mode identityref.";
      reference
        "0.14.0";

    }

    revision "2021-02-26" {
      description
        "Additional PMD types, form factors, and protocol types.";
      reference
        "0.13.0";

    }

    revision "2020-08-12" {
      description
        "Additional tributary rates.";
      reference
        "0.12.0";

    }

    revision "2020-04-24" {
      description
        "Add 400G protocol and additional tributary half rates.";
      reference
        "0.11.0";

    }

    revision "2020-04-22" {
      description
        "Add AOC and DAC connector identities.";
      reference
        "0.10.0";

    }

    revision "2019-06-27" {
      description
        "Add FIBER_JUMPER_TYPE identityref.";
      reference
        "0.9.0";

    }

    revision "2019-06-21" {
      description
        "Generalize and rename optical port type identity";
      reference
        "0.8.0";

    }

    revision "2018-11-21" {
      description
        "Add OpenConfig module metadata extensions.";
      reference
        "0.7.1";

    }

    revision "2018-10-23" {
      description
        "Added frame mapping protocols for logical channels assignments
and tributary slot granularity for OTN logical channels";
      reference
        "0.7.0";

    }

    revision "2018-05-16" {
      description
        "Added interval,min,max time to interval stats.";
      reference
        "0.6.0";

    }

    revision "2017-08-16" {
      description
        "Added ODU Cn protocol type";
      reference
        "0.5.0";

    }

    revision "2016-12-22" {
      description
        "Fixes and additions for terminal optics model";
      reference
        "0.4.0";

    }

    oc-ext:openconfig-version "0.25.0";
    oc-ext:regexp-posix;
    oc-ext:catalog-organization "openconfig";
    oc-ext:origin "openconfig";

    typedef frequency-type {
      type uint64;
      units "MHz";
      description
        "Type for optical spectrum frequency values";
    }

    typedef admin-state-type {
      type enumeration {
        enum "ENABLED" {
          value 0;
          description
            "Sets the channel admin state to enabled";
        }
        enum "DISABLED" {
          value 1;
          description
            "Sets the channel admin state to disabled";
        }
        enum "MAINT" {
          value 2;
          description
            "Sets the channel to maintenance / diagnostic mode";
        }
      }
      description
        "Administrative state modes for
logical channels in the transponder model.";
    }

    typedef loopback-mode-type {
      type enumeration {
        enum "NONE" {
          value 0;
          description
            "No loopback is applied";
        }
        enum "FACILITY" {
          value 1;
          description
            "A port internal loopback at ASIC level. The loopback directs
traffic normally transmitted on the port back to the device as
if received on the same port from an external source. Note this
mode is used when internal loopback does NOT specify MAC or PHY.";
        }
        enum "TERMINAL" {
          value 2;
          description
            "A port external loopback at ASIC level. The loopback which
directs traffic received from an external source on the port
back out the transmit side of the same port. Note this mode is
used when external loopback does NOT specify MAC or PHY";
        }
        enum "ASIC_PHY_LOCAL" {
          value 3;
          description
            "A port internal loopback at PHY module. The loopback directs
traffic normally transmitted on the port back to the device as
if received on the same port from an external source.";
        }
        enum "ASIC_PHY_REMOTE" {
          value 4;
          description
            "A port external loopback at PHY module. The loopback which
directs traffic received from an external source on the port
back out the transmit side of the same port.";
        }
        enum "ASIC_MAC_LOCAL" {
          value 5;
          description
            "A port internal loopback at MAC module. The loopback directs
traffic normally transmitted on the port back to the device as
if received on the same port from an external source.";
        }
        enum "ASIC_MAC_REMOTE" {
          value 6;
          description
            "A port external loopback at MAC module. The loopback which
directs traffic received from an external source on the port
back out the transmit side of the same port.";
        }
      }
      default "NONE";
      description
        "Loopback modes for transponder logical channels";
    }

    identity FRAME_MAPPING_PROTOCOL {
      description
        "Base identity for frame mapping protocols that can be used
when mapping Ethernet, OTN or other client signals to OTN
logical channels.";
    }

    identity AMP {
      base FRAME_MAPPING_PROTOCOL;
      description
        "Asynchronous Mapping Procedure";
    }

    identity GMP {
      base FRAME_MAPPING_PROTOCOL;
      description
        "Generic Mapping Procedure";
    }

    identity BMP {
      base FRAME_MAPPING_PROTOCOL;
      description
        "Bit-synchronous Mapping Procedure";
    }

    identity CBR {
      base FRAME_MAPPING_PROTOCOL;
      description
        "Constant Bit Rate Mapping Procedure";
    }

    identity GFP_T {
      base FRAME_MAPPING_PROTOCOL;
      description
        "Transparent Generic Framing Protocol";
    }

    identity GFP_F {
      base FRAME_MAPPING_PROTOCOL;
      description
        "Framed-Mapped Generic Framing Protocol";
    }

    identity TRIBUTARY_SLOT_GRANULARITY {
      description
        "Base identity for tributary slot granularity for OTN
logical channels.";
    }

    identity TRIB_SLOT_1.25G {
      base TRIBUTARY_SLOT_GRANULARITY;
      description
        "The tributary slot with a bandwidth of approximately 1.25 Gb/s
as defined in ITU-T G.709 standard.";
    }

    identity TRIB_SLOT_2.5G {
      base TRIBUTARY_SLOT_GRANULARITY;
      description
        "The tributary slot with a bandwidth of approximately 2.5 Gb/s
as defined in ITU-T G.709 standard.";
    }

    identity TRIB_SLOT_5G {
      base TRIBUTARY_SLOT_GRANULARITY;
      description
        "The tributary slot with a bandwidth of approximately 5 Gb/s
as defined in ITU-T G.709 standard.";
    }

    grouping avg-min-max-instant-stats-precision2-ps-nm {
      description
        "Common grouping for recording picosecond per nanometer
values with 2 decimal precision. Values include the
instantaneous, average, minimum, and maximum statistics.
Statistics are computed and reported based on a moving time
interval (e.g., the last 30s).  If supported by the device,
the time interval over which the statistics are computed, and
the times at which the minimum and maximum values occurred,
are also reported.";
      leaf instant {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps-nm";
        description
          "The instantaneous value of the statistic.";
      }

      leaf avg {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps-nm";
        description
          "The arithmetic mean value of the statistic over the
time interval.";
      }

      leaf min {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps-nm";
        description
          "The minimum value of the statistic over the time interval.";
      }

      leaf max {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps-nm";
        description
          "The maximum value of the statistic over the time interval.";
      }

      uses oc-types:stat-interval-state;

      uses oc-types:min-max-time;
    }  // grouping avg-min-max-instant-stats-precision2-ps-nm

    grouping avg-min-max-instant-stats-precision2-ps {
      description
        "Common grouping for recording picosecond values with
2 decimal precision. Values include the
instantaneous, average, minimum, and maximum statistics.
Statistics are computed and reported based on a moving time
interval (e.g., the last 30s).  If supported by the device,
the time interval over which the statistics are computed, and
the times at which the minimum and maximum values occurred,
are also reported.";
      leaf instant {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps";
        description
          "The instantaneous value of the statistic.";
      }

      leaf avg {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps";
        description
          "The arithmetic mean value of the statistic over the
time interval.";
      }

      leaf min {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps";
        description
          "The minimum value of the statistic over the time interval.";
      }

      leaf max {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps";
        description
          "The maximum value of the statistic over the time interval.";
      }

      uses oc-types:stat-interval-state;

      uses oc-types:min-max-time;
    }  // grouping avg-min-max-instant-stats-precision2-ps

    grouping avg-min-max-instant-stats-precision2-ps2 {
      description
        "Common grouping for recording picosecond^2 values with
2 decimal precision. Values include the
instantaneous, average, minimum, and maximum statistics.
Statistics are computed and reported based on a moving time
interval (e.g., the last 30s).  If supported by the device,
the time interval over which the statistics are computed, and
the times at which the minimum and maximum values occurred,
are also reported.";
      leaf instant {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps^2";
        description
          "The instantaneous value of the statistic.";
      }

      leaf avg {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps^2";
        description
          "The arithmetic mean value of the statistic over the
time interval.";
      }

      leaf min {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps^2";
        description
          "The minimum value of the statistic over the time interval.";
      }

      leaf max {
        type decimal64 {
          fraction-digits 2;
        }
        units "ps^2";
        description
          "The maximum value of the statistic over the time
interval.";
      }

      uses oc-types:stat-interval-state;

      uses oc-types:min-max-time;
    }  // grouping avg-min-max-instant-stats-precision2-ps2

    grouping avg-min-max-instant-stats-precision18-ber {
      description
        "Common grouping for recording bit error rate (BER) values
with 18 decimal precision. Note that decimal64 supports
values as small as i x 10^-18 where i is an integer. Values
smaller than this should be reported as 0 to inidicate error
free or near error free performance. Values include the
instantaneous, average, minimum, and maximum statistics.
Statistics are computed and reported based on a moving time
interval (e.g., the last 30s).  If supported by the device,
the time interval over which the statistics are computed, and
the times at which the minimum and maximum values occurred,
are also reported.";
      leaf instant {
        type decimal64 {
          fraction-digits 18;
        }
        units "bit-errors-per-second";
        description
          "The instantaneous value of the statistic.";
      }

      leaf avg {
        type decimal64 {
          fraction-digits 18;
        }
        units "bit-errors-per-second";
        description
          "The arithmetic mean value of the statistic over the
time interval.";
      }

      leaf min {
        type decimal64 {
          fraction-digits 18;
        }
        units "bit-errors-per-second";
        description
          "The minimum value of the statistic over the time
interval.";
      }

      leaf max {
        type decimal64 {
          fraction-digits 18;
        }
        units "bit-errors-per-second";
        description
          "The maximum value of the statistic over the time
interval.";
      }

      uses oc-types:stat-interval-state;

      uses oc-types:min-max-time;
    }  // grouping avg-min-max-instant-stats-precision18-ber

    grouping avg-min-max-instant-stats-precision1-mhz {
      description
        "Common grouping for recording frequency values in MHz with
1 decimal precision. Values include the instantaneous, average,
minimum, and maximum statistics. Statistics are computed and
reported based on a moving time interval (e.g., the last 30s).
If supported by the device, the time interval over which the
statistics are computed, and the times at which the minimum and
maximum values occurred, are also reported.";
      leaf instant {
        type decimal64 {
          fraction-digits 1;
        }
        units "MHz";
        description
          "The instantaneous value of the statistic.";
      }

      leaf avg {
        type decimal64 {
          fraction-digits 1;
        }
        units "MHz";
        description
          "The arithmetic mean value of the statistic over the
time interval.";
      }

      leaf min {
        type decimal64 {
          fraction-digits 1;
        }
        units "MHz";
        description
          "The minimum value of the statistic over the time interval.";
      }

      leaf max {
        type decimal64 {
          fraction-digits 1;
        }
        units "MHz";
        description
          "The maximum value of the statistic over the time interval.";
      }

      uses oc-types:stat-interval-state;

      uses oc-types:min-max-time;
    }  // grouping avg-min-max-instant-stats-precision1-mhz

    grouping avg-min-max-instant-stats-precision1-krads {
      description
        "Common grouping for recording kiloradian per second (krad/s) values
with 1 decimal precision. Values include the instantaneous,
average, minimum, and maximum statistics. Statistics are computed
and reported based on a moving time interval (e.g., the last 30s).
If supported by the device, the time interval over which the
statistics are computed, and the times at which the minimum and
maximum values occurred, are also reported.";
      leaf instant {
        type decimal64 {
          fraction-digits 1;
        }
        units "krad/s";
        description
          "The instantaneous value of the statistic.";
      }

      leaf avg {
        type decimal64 {
          fraction-digits 1;
        }
        units "krad/s";
        description
          "The arithmetic mean value of the statistic over the
time interval.";
      }

      leaf min {
        type decimal64 {
          fraction-digits 1;
        }
        units "krad/s";
        description
          "The minimum value of the statistic over the time interval.";
      }

      leaf max {
        type decimal64 {
          fraction-digits 1;
        }
        units "krad/s";
        description
          "The maximum value of the statistic over the time interval.";
      }

      uses oc-types:stat-interval-state;

      uses oc-types:min-max-time;
    }  // grouping avg-min-max-instant-stats-precision1-krads

    grouping avg-min-max-instant-stats-precision2-pct {
      description
        "Common grouping for percentage statistics with 2 decimal precision.
Values include the instantaneous, average, minimum, and maximum
statistics. Statistics are computed and reported based on a moving
time interval (e.g., the last 30s). If supported by the device,
the time interval over which the statistics are computed, and the
times at which the minimum and maximum values occurred, are also
reported.";
      leaf instant {
        type decimal64 {
          fraction-digits 2;
        }
        units "percentage";
        description
          "The instantaneous value of the statistic.";
      }

      leaf avg {
        type decimal64 {
          fraction-digits 2;
        }
        units "percentage";
        description
          "The arithmetic mean value of the statistic over the
time interval.";
      }

      leaf min {
        type decimal64 {
          fraction-digits 2;
        }
        units "percentage";
        description
          "The minimum value of the statistic over the time interval.";
      }

      leaf max {
        type decimal64 {
          fraction-digits 2;
        }
        units "percentage";
        description
          "The maximum value of the statistic over the time interval.";
      }

      uses oc-types:stat-interval-state;

      uses oc-types:min-max-time;
    }  // grouping avg-min-max-instant-stats-precision2-pct

    identity TRIBUTARY_PROTOCOL_TYPE {
      description
        "Base identity for protocol framing used by tributary
signals.";
    }

    identity PROT_1GE {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "1G Ethernet protocol";
    }

    identity PROT_OC48 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "OC48 protocol";
    }

    identity PROT_STM16 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "STM 16 protocol";
    }

    identity PROT_10GE_LAN {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "10G Ethernet LAN protocol";
    }

    identity PROT_10GE_WAN {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "10G Ethernet WAN protocol";
    }

    identity PROT_OC192 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "OC 192 (9.6GB) port protocol";
    }

    identity PROT_STM64 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "STM 64 protocol";
    }

    identity PROT_OTU2 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "OTU 2 protocol";
    }

    identity PROT_OTU2E {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "OTU 2e protocol";
    }

    identity PROT_OTU1E {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "OTU 1e protocol";
    }

    identity PROT_ODU2 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "ODU 2 protocol";
    }

    identity PROT_ODU2E {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "ODU 2e protocol";
    }

    identity PROT_40GE {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "40G Ethernet port protocol";
    }

    identity PROT_OC768 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "OC 768 protocol";
    }

    identity PROT_STM256 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "STM 256 protocol";
    }

    identity PROT_OTU3 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "OTU 3 protocol";
    }

    identity PROT_ODU3 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "ODU 3 protocol";
    }

    identity PROT_100GE {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "100G Ethernet protocol";
    }

    identity PROT_100G_MLG {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "100G MLG protocol";
    }

    identity PROT_OTU4 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "OTU4 signal protocol (112G) for transporting
100GE signal";
    }

    identity PROT_OTUCN {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "OTU Cn protocol";
    }

    identity PROT_ODUCN {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "ODU Cn protocol";
    }

    identity PROT_ODU4 {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "ODU 4 protocol";
    }

    identity PROT_400GE {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "400G Ethernet protocol";
    }

    identity PROT_800GE {
      base TRIBUTARY_PROTOCOL_TYPE;
      description "800G Ethernet protocol";
    }

    identity PROT_OTSIG {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "Optical tributary signal group protocol";
    }

    identity PROT_ODUFLEX_CBR {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "ODU Flex with CBR protocol";
    }

    identity PROT_FLEXO {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "FlexO protocol as defined in ITU-T G.709.1 and ITU-T G.709.3";
    }

    identity PROT_ODUFLEX_GFP {
      base TRIBUTARY_PROTOCOL_TYPE;
      description
        "ODU Flex with GFP protocol";
    }

    identity TRANSCEIVER_FORM_FACTOR_TYPE {
      description
        "Base identity for identifying the type of pluggable optic
transceiver (i.e,. form factor) used in a port.";
    }

    identity CFP {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "C form-factor pluggable, that can support up to a
100 Gb/s signal with 10x10G or 4x25G physical channels";
    }

    identity CFP2 {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "1/2 C form-factor pluggable, that can support up to a
200 Gb/s signal with 10x10G, 4x25G, or 8x25G physical
channels";
    }

    identity CFP2_ACO {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "CFP2 analog coherent optics transceiver, supporting
100 Gb, 200Gb, and 250 Gb/s signal.";
    }

    identity CFP4 {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "1/4 C form-factor pluggable, that can support up to a
100 Gb/s signal with 10x10G or 4x25G physical channels";
    }

    identity QSFP {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "OriginalQuad Small Form-factor Pluggable transceiver that can
support 4x1G physical channels.  Not commonly used.";
    }

    identity QSFP_PLUS {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Quad Small Form-factor Pluggable transceiver that can support
up to 4x10G physical channels.";
    }

    identity QSFP28 {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "QSFP pluggable optic with support for up to 4x28G physical
channels";
    }

    identity QSFP28_DD {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "QSFP-DD with electrical interfaces consisting of 8 lanes that operate at up to
25 Gbps with NRZ modulation";
      reference
        "http://qsfp-dd.com";

    }

    identity QSFP56 {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "QSFP pluggable optic with support for up to 4x56G physical
channels";
    }

    identity QSFP56_DD {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "QSFP-DD quad small form factor pluggable double density
optic providing an 8 lane electrical interface";
      reference
        "http://qsfp-dd.com";

    }

    identity QSFP56_DD_TYPE1 {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      status deprecated;
      description
        "QSFP DD pluggable optic with support for up to 8x56G physical
channels. Type 1 uses eight optical and electrical signals.";
    }

    identity QSFP56_DD_TYPE2 {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      status deprecated;
      description
        "QSFP DD pluggable optic with support for up to 4x112G physical
channels. Type 2 uses four optical and eight electrical
signals.";
    }

    identity CPAK {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Cisco CPAK transceiver supporting 100 Gb/s.";
    }

    identity SFP {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Small form-factor pluggable transceiver supporting up to
10 Gb/s signal";
    }

    identity SFP_PLUS {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Enhanced small form-factor pluggable transceiver supporting
up to 16 Gb/s signals, including 10 GbE and OTU2";
    }

    identity CSFP {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Compact Small form-factor pluggable transceiver. It is a version
of SFP with the same mechanical form factor allowing two independent
bidirectional channels per port.";
    }

    identity SFP28 {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Small form-factor pluggable transceiver supporting up to
25 Gb/s signal";
    }

    identity SFP56 {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Small form-factor pluggable transceiver supporting up to
50 Gb/s signal";
    }

    identity SFP_DD {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "SFP-DD electrical interfaces will employ 2 lanes that operate up to
25 Gbps NRZ modulation or 56 Gbps PAM4 modulation, providing
solutions up to 50 Gbps or 112 Gbps PAM4 aggregate";
      reference
        "http://sfp-dd.com";

    }

    identity DSFP {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "A transceiver implementing the DSFP Transceiver specification";
      reference
        "https://dsfpmsa.org/";

    }

    identity XFP {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "10 Gigabit small form factor pluggable transceiver supporting
10 GbE and OTU2";
    }

    identity X2 {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "10 Gigabit small form factor pluggable transceiver supporting
10 GbE using a XAUI inerface and 4 data channels.";
    }

    identity OSFP {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Octal small form factor pluggable transceiver supporting
400 Gb/s or 800 Gb/s.";
    }

    identity NON_PLUGGABLE {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Represents a port that does not require a pluggable optic,
e.g., with on-board optics like COBO";
    }

    identity OTHER {
      base TRANSCEIVER_FORM_FACTOR_TYPE;
      description
        "Represents a transceiver form factor not otherwise listed";
    }

    identity FIBER_CONNECTOR_TYPE {
      description
        "Type of optical fiber connector";
    }

    identity SC_CONNECTOR {
      base FIBER_CONNECTOR_TYPE;
      description "SC type fiber connector";
    }

    identity LC_CONNECTOR {
      base FIBER_CONNECTOR_TYPE;
      description "LC type fiber connector";
    }

    identity MPO_CONNECTOR {
      base FIBER_CONNECTOR_TYPE;
      description
        "MPO (multi-fiber push-on/pull-off) type fiber connector
1x12 fibers";
    }

    identity AOC_CONNECTOR {
      base FIBER_CONNECTOR_TYPE;
      description
        "AOC (active optical cable) type fiber connector";
    }

    identity DAC_CONNECTOR {
      base FIBER_CONNECTOR_TYPE;
      description
        "DAC (direct attach copper) type fiber connector";
    }

    identity ETHERNET_PMD_TYPE {
      description
        "Ethernet compliance codes (PMD) supported by transceivers";
    }

    identity ETH_1000BASE_LX10 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: ETH_1000BASE_LX10";
      reference
        "802.3ah-2004(CL59)";

    }

    identity ETH_10GBASE_LRM {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 10GBASE_LRM";
    }

    identity ETH_10GBASE_LR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 10GBASE_LR";
    }

    identity ETH_10GBASE_ZR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 10GBASE_ZR";
    }

    identity ETH_10GBASE_ER {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 10GBASE_ER";
    }

    identity ETH_10GBASE_SR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 10GBASE_SR";
    }

    identity ETH_25GBASE_LR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 25GBASE_LR";
      reference
        "IEEE 802.3cc-2022 (CL114)";

    }

    identity ETH_25GBASE_SR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 25GBASE_SR";
      reference
        "IEEE 802.3by-2022 (CL112)";

    }

    identity ETH_40GBASE_CR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 40GBASE_CR4.
This PMD is used in Direct Attach Cables (DAC)
and Active Optical Cables (AOC)";
      reference
        "IEEE 802.3ba 40GBASE-CR4";

    }

    identity ETH_40GBASE_SR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 40GBASE_SR4";
    }

    identity ETH_40GBASE_LR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 40GBASE_LR4";
    }

    identity ETH_40GBASE_ER4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 40GBASE_ER4";
    }

    identity ETH_40GBASE_PSM4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 40GBASE_PSM4";
    }

    identity ETH_4X10GBASE_LR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 4x10GBASE_LR";
    }

    identity ETH_4X10GBASE_SR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 4x10GBASE_SR";
    }

    identity ETH_100G_AOC {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100G_AOC";
    }

    identity ETH_100G_ACC {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100G_ACC";
    }

    identity ETH_100GBASE_SR10 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_SR10";
    }

    identity ETH_100GBASE_SR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_SR4";
    }

    identity ETH_100GBASE_LR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_LR4";
    }

    identity ETH_100GBASE_ER4L {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_ER4L";
    }

    identity ETH_100GBASE_ER4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_ER4";
    }

    identity ETH_100GBASE_CWDM4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_CWDM4";
    }

    identity ETH_100GBASE_CLR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_CLR4";
    }

    identity ETH_100GBASE_PSM4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_PSM4";
    }

    identity ETH_100GBASE_CR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_CR4.
This PMD is used in Direct Attach Cables (DAC)
and Active Optical Cables (AOC)";
      reference
        "IEEE 802.3bj 100GBASE-CR4";

    }

    identity ETH_100GBASE_FR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_FR";
    }

    identity ETH_100GBASE_DR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 100GBASE_DR";
    }

    identity ETH_400GBASE_ZR {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 400GBASE_ZR";
    }

    identity ETH_400GBASE_LR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 400GBASE_LR4";
    }

    identity ETH_400GBASE_FR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 400GBASE_FR4";
    }

    identity ETH_400GBASE_LR8 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 400GBASE_LR8";
    }

    identity ETH_400GBASE_DR4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 400GBASE_DR4";
    }

    identity ETH_400GMSA_PSM4 {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: 400GMSA_PSM4";
    }

    identity ETH_UNDEFINED {
      base ETHERNET_PMD_TYPE;
      description
        "Ethernet compliance code: undefined";
    }

    identity SONET_APPLICATION_CODE {
      description
        "Supported SONET/SDH application codes";
    }

    identity VSR2000_3R2 {
      base SONET_APPLICATION_CODE;
      description
        "SONET/SDH application code: VSR2000_3R2";
    }

    identity VSR2000_3R3 {
      base SONET_APPLICATION_CODE;
      description
        "SONET/SDH application code: VSR2000_3R3";
    }

    identity VSR2000_3R5 {
      base SONET_APPLICATION_CODE;
      description
        "SONET/SDH application code: VSR2000_3R5";
    }

    identity SONET_UNDEFINED {
      base SONET_APPLICATION_CODE;
      description
        "SONET/SDH application code: undefined";
    }

    identity OTN_APPLICATION_CODE {
      description
        "Supported OTN application codes";
    }

    identity P1L1_2D1 {
      base OTN_APPLICATION_CODE;
      description
        "OTN application code: P1L1_2D1";
    }

    identity P1S1_2D2 {
      base OTN_APPLICATION_CODE;
      description
        "OTN application code: P1S1_2D2";
    }

    identity P1L1_2D2 {
      base OTN_APPLICATION_CODE;
      description
        "OTN application code: P1L1_2D2";
    }

    identity OTN_UNDEFINED {
      base OTN_APPLICATION_CODE;
      description
        "OTN application code: undefined";
    }

    identity TRIBUTARY_RATE_CLASS_TYPE {
      description
        "Rate of tributary signal _- identities will typically reflect
rounded bit rate.";
    }

    identity TRIB_RATE_1G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description "1G tributary signal rate";
    }

    identity TRIB_RATE_2.5G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2.5G tributary signal rate";
    }

    identity TRIB_RATE_10G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "10G tributary signal rate";
    }

    identity TRIB_RATE_40G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "40G tributary signal rate";
    }

    identity TRIB_RATE_100G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "100G tributary signal rate";
    }

    identity TRIB_RATE_150G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "150G tributary signal rate";
    }

    identity TRIB_RATE_200G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "200G tributary signal rate";
    }

    identity TRIB_RATE_250G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "250G tributary signal rate";
    }

    identity TRIB_RATE_300G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "300G tributary signal rate";
    }

    identity TRIB_RATE_350G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "350G tributary signal rate";
    }

    identity TRIB_RATE_400G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "400G tributary signal rate";
    }

    identity TRIB_RATE_450G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "450G tributary signal rate";
    }

    identity TRIB_RATE_500G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "500G tributary signal rate";
    }

    identity TRIB_RATE_550G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "550G tributary signal rate";
    }

    identity TRIB_RATE_600G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "600G tributary signal rate";
    }

    identity TRIB_RATE_650G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "650G tributary signal rate";
    }

    identity TRIB_RATE_700G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "700G tributary signal rate";
    }

    identity TRIB_RATE_750G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "750G tributary signal rate";
    }

    identity TRIB_RATE_800G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "800G tributary signal rate";
    }

    identity TRIB_RATE_850G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "850G tributary signal rate";
    }

    identity TRIB_RATE_900G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "900G tributary signal rate";
    }

    identity TRIB_RATE_950G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "950G tributary signal rate";
    }

    identity TRIB_RATE_1000G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1000G tributary signal rate";
    }

    identity TRIB_RATE_1050G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1050G tributary signal rate";
    }

    identity TRIB_RATE_1100G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1100G tributary signal rate";
    }

    identity TRIB_RATE_1150G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1150G tributary signal rate";
    }

    identity TRIB_RATE_1200G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1200G tributary signal rate";
    }

    identity TRIB_RATE_1250G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1250G tributary signal rate";
    }

    identity TRIB_RATE_1300G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1300G tributary signal rate";
    }

    identity TRIB_RATE_1350G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1350G tributary signal rate";
    }

    identity TRIB_RATE_1400G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1400G tributary signal rate";
    }

    identity TRIB_RATE_1450G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1450G tributary signal rate";
    }

    identity TRIB_RATE_1500G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1500G tributary signal rate";
    }

    identity TRIB_RATE_1550G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1550G tributary signal rate";
    }

    identity TRIB_RATE_1600G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1600G tributary signal rate";
    }

    identity TRIB_RATE_1650G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1650G tributary signal rate";
    }

    identity TRIB_RATE_1700G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1700G tributary signal rate";
    }

    identity TRIB_RATE_1750G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1750G tributary signal rate";
    }

    identity TRIB_RATE_1800G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1800G tributary signal rate";
    }

    identity TRIB_RATE_1850G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1850G tributary signal rate";
    }

    identity TRIB_RATE_1900G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1900G tributary signal rate";
    }

    identity TRIB_RATE_1950G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "1950G tributary signal rate";
    }

    identity TRIB_RATE_2000G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2000G tributary signal rate";
    }

    identity TRIB_RATE_2050G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2050G tributary signal rate";
    }

    identity TRIB_RATE_2100G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2100G tributary signal rate";
    }

    identity TRIB_RATE_2150G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2150G tributary signal rate";
    }

    identity TRIB_RATE_2200G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2200G tributary signal rate";
    }

    identity TRIB_RATE_2250G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2250G tributary signal rate";
    }

    identity TRIB_RATE_2300G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2300G tributary signal rate";
    }

    identity TRIB_RATE_2350G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2350G tributary signal rate";
    }

    identity TRIB_RATE_2400G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2400G tributary signal rate";
    }

    identity TRIB_RATE_2450G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2450G tributary signal rate";
    }

    identity TRIB_RATE_2500G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2500G tributary signal rate";
    }

    identity TRIB_RATE_2550G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2550G tributary signal rate";
    }

    identity TRIB_RATE_2600G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2600G tributary signal rate";
    }

    identity TRIB_RATE_2650G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2650G tributary signal rate";
    }

    identity TRIB_RATE_2700G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2700G tributary signal rate";
    }

    identity TRIB_RATE_2750G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2750G tributary signal rate";
    }

    identity TRIB_RATE_2800G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2800G tributary signal rate";
    }

    identity TRIB_RATE_2850G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2850G tributary signal rate";
    }

    identity TRIB_RATE_2900G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2900G tributary signal rate";
    }

    identity TRIB_RATE_2950G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "2950G tributary signal rate";
    }

    identity TRIB_RATE_3000G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "3000G tributary signal rate";
    }

    identity TRIB_RATE_3050G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "3050G tributary signal rate";
    }

    identity TRIB_RATE_3100G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "3100G tributary signal rate";
    }

    identity TRIB_RATE_3150G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "3150G tributary signal rate";
    }

    identity TRIB_RATE_3200G {
      base TRIBUTARY_RATE_CLASS_TYPE;
      description
        "3200G tributary signal rate";
    }

    identity LOGICAL_ELEMENT_PROTOCOL_TYPE {
      description
        "Type of protocol framing used on the logical channel or
tributary";
    }

    identity PROT_ETHERNET {
      base LOGICAL_ELEMENT_PROTOCOL_TYPE;
      description
        "Ethernet protocol framing";
    }

    identity PROT_OTN {
      base LOGICAL_ELEMENT_PROTOCOL_TYPE;
      description "OTN protocol framing";
    }

    identity OPTICAL_CHANNEL {
      base oc-platform-types:OPENCONFIG_HARDWARE_COMPONENT;
      description
        "Optical channels act as carriers for transport traffic
directed over a line system.  They are represented as
physical components in the physical inventory model.";
    }

    identity FIBER_JUMPER_TYPE {
      description
        "Types of fiber jumpers used for connecting device ports";
    }

    identity FIBER_JUMPER_SIMPLEX {
      base FIBER_JUMPER_TYPE;
      description "Simplex fiber jumper";
    }

    identity FIBER_JUMPER_MULTI_FIBER_STRAND {
      base FIBER_JUMPER_TYPE;
      description
        "One strand of a fiber jumper which contains multiple fibers
within it, such as an MPO based fiber jumper";
    }

    identity OPTICAL_PORT_TYPE {
      description
        "Type definition for optical transport port types";
    }

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

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

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

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

    identity MONITOR {
      base OPTICAL_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, typically on a
line system device. This  connection may be via physical cable
and faceplate ports or internal to the device";
    }

    identity TERMINAL_CLIENT {
      base OPTICAL_PORT_TYPE;
      description
        "Client-facing port on a terminal optics device (e.g.,
transponder or muxponder).";
    }

    identity TERMINAL_LINE {
      base OPTICAL_PORT_TYPE;
      description
        "Line-facing port on a terminal optics device (e.g.,
transponder or muxponder).";
    }

    identity CLIENT_MAPPING_MODE {
      description
        "Type definition for optical transport client mapping modes.";
    }

    identity MODE_1X100G {
      base CLIENT_MAPPING_MODE;
      description
        "1 x 100G client mapping mode.";
    }

    identity MODE_1X200G {
      base CLIENT_MAPPING_MODE;
      description
        "1 x 200G client mapping mode.";
    }

    identity MODE_1X400G {
      base CLIENT_MAPPING_MODE;
      description
        "1 x 400G client mapping mode.";
    }

    identity MODE_2X100G {
      base CLIENT_MAPPING_MODE;
      description
        "2 x 100G client mapping mode.";
    }

    identity MODE_2X200G {
      base CLIENT_MAPPING_MODE;
      description
        "2 x 200G client mapping mode.";
    }

    identity MODE_3X100G {
      base CLIENT_MAPPING_MODE;
      description
        "3 x 100G client mapping mode.";
    }

    identity MODE_4X100G {
      base CLIENT_MAPPING_MODE;
      description
        "4 x 100G client mapping mode.";
    }

    identity TRANSCEIVER_MODULE_FUNCTIONAL_TYPE {
      description
        "Type definition for transceiver module functional types.";
    }

    identity TYPE_STANDARD_OPTIC {
      base TRANSCEIVER_MODULE_FUNCTIONAL_TYPE;
      description
        "Standard optic using a grey wavelength (i.e. 1310, 1550, etc.)
and on-off-keying (OOK) modulation.";
    }

    identity TYPE_DIGITAL_COHERENT_OPTIC {
      base TRANSCEIVER_MODULE_FUNCTIONAL_TYPE;
      description
        "Digital coherent module which transmits a phase / amplitude
modulated signal and uses a digital signal processor to receive
and decode the received signal.";
    }
  }  // module openconfig-transport-types