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Cisco Network Convergence System 1004 L-Band Transponder Line Card Data Sheet

Data Sheet

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Updated:July 20, 2020

Available Languages

Download Options

  • PDF
    (691.3 KB)
    View with Adobe Reader on a variety of devices
Updated:July 20, 2020


Service Providers continue to work with technology providers to identify innovations for scarce long haul and subsea fiber assets as demands continue to grow exponentially. Next-gen transponders provide incremental capacity improvements as we approach Shannon’s limit. A key approach to tackling this head-on is extending to L-Band frequencies to double capacity on such networks. Network Convergence System 1004 uses state of the art silicon along with complete automation and real-time visibility to deliver a universal transponder solution that provides best-in-class performance for metro, long-haul and submarine applications while being simple to deploy and manage. The solution offers both C-Band and L-Band frequency solutions.

Product features and benefits of NCS 1004 L-Band transponder

The trunk ports of the NCS 1004 L-Band transponder are capable of several line rates with fine control of modulation format, baud-rate and forward error correction allowing the solution to be used for metro, terrestrial long-haul or submarine applications:

     The baud-rate can be controlled between 31.5Gbd/s and 72Gbd/s.

     The modulation format can be controlled between QPSK, 8-QAM, 16QAM and 32QAM.

     Hybrids between modulation formats can be configured to achieve 0.001 bits/symbol of granularity.

     Forward Error Correction (FEC) of 27% and 15% overhead.

     Trunk line rate from 200G to 400G in 50G increments.

Each line card can provide up to 8x100Gbe/OTU4 client ports. The client ports map to two trunk ports operating any rate between 100G and 400G in 50G increments. The baud-rate, modulation format and FEC of each trunk port is software-configurable per slice.

The Cisco NCS 1004 L band system provides the following hardware benefits:

     Transport of any trunk rate between 200 and 400Gbps wavelengths on the same platform through software provisioning.

     Support of granular control of baud-rate and modulation format to maximize spectral efficiency.

     One universal transponder that is performance optimized for metro, long-haul and submarine applications.

     Support for up to 350,000 ps/nm of residual chromatic dispersion compensation.

     Transport of 100GE and OTU4 on the same platform through software provisioning.

     400G DWDM provides unparalleled scale and density. With 64 channels of 400G at 75Ghz, the NCS 1004 provides 25.6Tbps in 16RU.

     State of the art AES-256 Encryption at scale – 3.2Tbps of encrypted trunk capacity per 2RU.

     Non-Linear Compensation for maximum performance on compensated legacy subsea cables and for non-linear terrestrial fibers.

     SOP tracking speed of up to 10 million rad/s for aerial fiber applications.

     The Cisco NCS 1004 features software configurable modulation scheme per slice, allowing the operator to customize the spectral efficiency and reach characteristics of individual wavelengths. 69Gbaud/s symbol rate doubles capacity per interface when compared to 32Gbaud/s signals today.

Table 1.           Sample modulation format, baud-rate, line rate combinations

Modulation Type


Baud-rate (GBaud/s)

Line rate supported (Gbps)





PM-QPSK-8QAM hybrid








PM-8QAM-16QAM hybrid








Wavelength tunability

The line interface supports software-provisionable tunability across the full L band, covering 96 channels on the 50-GHz grid. Grid-less tuning support allows for continuous tunability in increments of 0.1 GHz and the ability to create multicarrier super-channels over flex spectrum line systems.

Protocol transparency

The Cisco NCS 1004 can transparently deliver 100Gbe and OTU4 clients over 2x 100G-400G.

Fine Control of Coherent DWDM interface

The Cisco NCS 1004 provides the ability to modify baud-rate and modulation format with fine control to meet capacity and reach requirements for a range of use-cases as shown in Figure 3.

     Use 69Gbaud/s line rates to maximize capacity at lowest price per bit for Metro and Long-Haul networks.

     Use real-time network bandwidth and performance data to maximize line rate capacity on coherent DWDM interface.

     Support line rates that can maximize capacity for bandwidth constrained 50Ghz and 100Ghz spaced legacy ROADM networks.

     Maximize spectral efficiency on submarine cable line system for the target Q-margin.


With increasing asks for data privacy and data protection across the globe, encryption of any data that leaves the Data Center facility is becoming an important requirement for cloud operators. The NCS 1004 provides AES256 based OTN-Sec encryption for 100GE and OTU4 clients. IKEv2 is used for authentication of the devices in an encryption session and the protocol provides pre-shared keys, certificates or 802.1X based authentication options. Elliptical Curve Diffie Hilman (ECDH) Key Exchange protocol runs over a GCC (Generic Communication Channel) between two NCS1004 nodes.


The Cisco NCS 1004 provides comprehensive management capabilities to support Operations, Administration, Maintenance, and Provisioning (OAM&P) capabilities through IOS-XR CLI, SNMP, Syslog, and XML. In addition, iPXE for automated software download and Zero Touch Provisioning (ZTP) for automated configuration download are available for simplified installation. For machine-to-machine configuration and management of NCS 1004, NETCONF, RESTCONF and gRPC transport protocols with JSON, XML and GPB encoding are provided. OpenConfig protocols for management GNMI and operations GNOI are also supported. The NCS 1004 provides a set of native YANG models as well as the ability to map into any industry standard or customer defined YANG data models. For monitoring, NCS 1004 provides a streaming telemetry feature that relies on a push mechanism to disseminate user selected PM and status information at user specified frequencies at granular 10 second intervals. This improves monitoring speed and scale compared to traditional pull based mechanisms such as SNMP. The telemetry infrastructure also allows for events such as alarms, port-state changes to be notified.

The NCS 1004 can also support third application hosting. Such an application can be hosted in a container or docker and can perform provisioning and monitoring on the NCS 1004.

Performance monitoring

The Cisco NCS 1004 supports performance monitoring of optical parameters on the client and DWDM line interface including laser bias current, transmit and receive optical power. Ethernet RMON statistics for the client ports and OTN error counters for the trunk are also available. Calculation and accumulation of the performance-monitoring data are supported in 15-minute and 24-hour intervals as per G.7710. Physical system parameters measured at the wavelength level, such as mean polarization mode dispersion, accumulated chromatic dispersion, pre-FEC Bit Error Rate and received Optical Signal-to-Noise Ratio (OSNR) are also included in the set of performance-monitoring parameters. These parameters can greatly simplify troubleshooting operations.

The NCS 1004 provides a set of port and system LEDs for a quick visual check of the operational status. The various LEDs are described in detail in Table 9.

Headless operation

The headless operation allows for NCS 1004 data plane to operate errorless during software upgrades and when the controller card is either physically absent or in a failed state. Trunk and client statistics will be accumulated and will be available to the user once the controller is up. In addition, fault propagation will continue to operate for client and trunk failures without the presence of the controller module.

Feature summary

The following table summarizes the features of the NCS 1004 L-Band Line Card

Table 2.           Feature summary



Software Compatibility

  IOS-XR 7.2.0 or later

Port Density

  32 QSFP28 client-side ports in 2RU
  8 DWDM line/trunk ports in 2RU

OTN feature summary

  Alarm reporting for Loss of Signal (LOS), Loss of Frame (LOF), Loss of Multi-frame (LOM), Alarm Indication Signal (AIS), Backward Defect Indicator (BDI)
  OTUk, ODUk, OPUk Performance Monitoring
  Threshold Crossing Alerts (TCAs)
  Local (internal) and line (network) loopbacks
  Trunk Trace Identifier, Generic Communication Channel
  L1 AES-256 encryption

Optical Feature Summary

  50GHz and flex-grid (0.1GHz) tunable lasers
  Nyquist shaping
  Non Linear Equalization
  Electronically compensated CD and PMD
  Performance Monitoring and Threshold Crossing Alerts (TCAs)
  Tx and Rx power monitoring

Ethernet Feature Summary

  Alarms and Performance Monitoring
  Squelch and Local Fault Propagation
  LLDP Snooping
  Performance Monitoring and Threshold Crossing Alerts (TCAs)
  Local (internal) and line (network) loopbacks


  Online insertion and Removal of the Controller
  Headless mode of operation

Network Management

  iPXE and Zero Touch Provisioning (ZTP)
  Streaming Telemetry including event driven telemetry
  NETCONF, RESTCONF, gRPC with YANG data models

Environmental Conditions

  Operating Temperature: 0 to 40 °C (32 to 104 °F)

Regulatory compliance

Table 3 lists regulatory compliance information for the trunk card. Note that all compliance documentation may not be completed at the time of product release. Please check with your Cisco sales representative for countries other than Canada, the United States, and the European Union.

Table 3.           Regulatory compliance

ANSI System

ETSI System

Countries and Regions Supported

  United States
  European Union
  European Union
  New Zealand
  Saudi Arabia
  South America
  EMC (Emissions)
  FCC 47CFR15, Class A
  AS/NZS CISPR 32, Class A
  CISPR 32, Class A
  EN55032, Class A
  ICES-003, Class A
  VCCI, Class A
  KN 32, Class A
  CNS-13438, Class A
  EMC (Immunity)
  IEC/EN61000-4-2 Electrostatic Discharge Immunity
  IEC/EN61000-4-3 Radiated Immunity
  IEC/EN61000-4-4 EFT-B Immunity
  IEC/EN61000-4-5 Surge AC Port
  IEC/EN61000-4-6 Immunity to Conducted Disturbances
  IEC/EN61000-4-11 Voltage Dips, Short Interruptions, and Voltage Variations
  KN 35
  EN 300 386 Telecommunications Network Equipment (EMC)
  EN55032 Electromagnetic Compatibility of Multimedia Equipment – Emission Requirements
  Information Technology Equipment (Emissions)
  EN55035 Electromagnetic Compatibility of Multimedia Equipment – Immunity Requirements
  EN55024 Information Technology Equipment (Immunity)
  EN61000-1/EN61000-6-2 Generic Immunity Standard
  EN61000-3-2 Power Line Harmonics
  EN61000-3-3 Voltage Changes, Fluctuations, and Flicker


  CSA C22.2 #60950-1 – Edition 7, March 2007
  UL 60950-1 - Edition 2, 2014
  IEC 60950-1 Information technology equipment Safety Part 1: General requirements - Edition 2, 2005 + Amendment 1 2009 + Amendment 2 2013
  EN 60950-1: Edition 2 (2006) Information technology equipment - Safety - Part 1: General requirements + A11:2009 + A1:2010 + A12:2011 + A2:2013
  CE Safety Directive: 2014/35/EC


  21CFR1040 (2008/04) (Accession Letter and CDRH Report) Guidance for Industry and FDA Staff (Laser Notice No. 50), June 2007
  IEC 60825-1: 2014 Ed. 3.0 Safety of laser products Part 1: Equipment classification, requirements and users guide
  IEC60825-2 Ed.3.2 (2010) Safety of laser products Part 2: Safety of optical fibre communication systems


  ITU-T G.691
  ITU-T G.975


  TR-NWT-000332, Issue 4, Method 1 calculation for 20-year Mean Time Between Failure (MTBF)

Table 4 provides the DWDM specifications, Table 5 details receive-side optical performances, Table 6 lists performance-monitoring parameters, Table 7 provides card specifications, Table 8 gives ordering information.

Table 4.           DWDM specifications



Baud rate

28 to 72Gbaud/s

Automatic laser shutdown and restart

ITU-T G.664 (06/99)

Nominal wavelengths (λTnom)

Fully tunable between 1571.91 to 1612.3 nm

Connector type (TX/RX)

LC, duplex (shuttered)

Optical Transmitter


PM-BPSK modulation format

PM-QPSK modulation format

PM-8QAM modulation format

PM-16QAM modulation format

Hybrids of adjacent modulation allowing 1 to 4 bits/symbol in 0.001 bits/symbol increments.

Output power

+3 to -10 dBm in 0.01 dBm increments

Required Optical Return Loss, minimum (ORLmin)

24 dB

Laser safety class


Optical Receiver

Frequency range

186.10 to 190.85 Thz (1571.91 to 1612.3 nm)

Input Power Range (16QAM)

-17 to +5 dBm

Input Power Range (8QAM,QPSK)

-22 to +5 dBm

Power accuracy

+/- 1 dBm

Optical Return Loss

27 dB

PMD tolerance @ 69Gbaud/s

64ps max DGD

Chromatic Dispersion tolerance @ 0.5db penalty

+/-100,000 ps for QPSK/8QAM

+/-80,000 ps for 16QAM

Chromatic Dispersion tolerance @ 1db penalty

+/-350,000 ps/nm for QPSK, 2.5 bits/sym

+/-280,000 ps/nm for 8QAM

+/-200,000 ps/nm for 3.5 bits/sym

+/-150,000 ps/nm for 16QAM

State of Polarization change tolerance

10 mn rad/s for QPSK

3 mn rad/s for 8QAM

Table 5.           DWDM receive-side optical performances

Modulation Type

FEC Type



Input Power Sensitivity

CD Tolerance


Required worst case OSNR (0.1 nm RBW)

PM-QPSK (200G)

SD-FEC (27% overhead)

<3.75x10E (–2)

<10E (-15)

0 to -13 dBm

0 ps/nm


14.1 dB

+/- 100,000 ps/nm

64 ps

14.6 dB

+/- 350,000 ps/nm

64 ps

15.1 dB

PM-8QAM (300G)

SD-FEC (27% overhead)

<3.75x10E (–2)

<10E (-15)

0 to -11 dBm

0 ps/nm


18.5 dB

+/- 100,000 ps/nm

64 ps

19 dB

+/- 280,000 ps/nm

64 ps

19.5 dB

PM-16QAM (400G)

SD-FEC (27% overhead)

<3.75x10E (–2)

<10E (-15)

0 to -10 dBm

0 ps/nm


22 dB

+/- 80,000 ps/nm

64 ps

22.5 dB

+/- 150,000 ps/nm

64 ps

23 dB

Table 6.           Trunk performance-monitoring parameters


Parameter Name


OTUk Monitoring (Near-end, Far-end, OTUk-SM, ODUk-PM)


Number of background block errors


Background block error ratio


Number of errored seconds


Errored seconds ratio


Number of severely errored seconds


Severely errored seconds ratio


Number of unavailable seconds


Number of failure counts


Bit errors

Number of corrected bit errors

Uncorrectable words

Number of uncorrectable words




Q-factor margin

Trunk optical performance monitoring


Transmitter optical power


Transmitter laser bias current


Receiver optical power


Residual chromatic dispersion


Mean polarization mode dispersion


Optical signal-to-noise ratio, calculated with 0.5-nm RBW


Second Order PMD (SOPMD) Estimation


Polarization Change Rate Estimation


Polarization Dependent Loss (PDL) Estimation

Table 7.           NCS 1004 specifications


Client and DWDM port LEDs

  No alarms
  Minor alarms
  Critical and Major alarms





NCS1K4-1.2TL-K9 1.6” wide x 12.4” deep x 3.3” tall


NCS1K4-1.2TL-K9 3.32 Kg

Storage temperature

-28°C to 70°C (-20°F to 158°F)

Operating temperature



  0°C to 40°C (32°F to 104°F)

Relative humidity

  Short-term 1


  5% to 85%, noncondensing
  5% to 90% but not to exceed 0.024 kg water/kg of dry air

1 Short-term refers to a period of not more than 96 consecutive hours and a total of not more than 15 days in 1 year (a total of 360 hours in any given year, but no more than 15 occurrences during that 1-year period). The values shown are valid for M6 or M2 chassis.

Table 8.           Ordering information

Part Number



Network Convergence System 1004 L Band Card


NCS 1004 L band IOS XR Software Release 721 RTU-USB key


NCS 1K - R720 SW, NCS1004 L band

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