Cisco Transport Node Controller and Transport Shelf Controller Cards Data Sheet

 

Product overview

The Cisco Network Convergence System (NCS) 2000 Series, the Cisco ONS 15454 Multiservice Transport Platform (MSTP), and the Cisco Carrier Packet Transport platform share a common set of controller cards which perform system initialization, provisioning, alarm reporting, maintenance, diagnostics, IP addressing, Data-Communications-Channel (DCC) termination, monitoring of system input voltage, system fault detection, and multishelf management connections. The line cards include the:

●      Cisco ONS 15454 Transport Node Controller (TNC) Card

●      Cisco ONS 15454 Transport Shelf Controller (TSC) Card

●      Cisco ONS 15454 Enhanced Transport Node Controller (TNCE) Card

●      Cisco ONS 15454 Enhanced Transport Shelf Controller (TSCE) Card

●      Cisco NCS 2000 Series Transport Node Controller (TNCS) Card

●      Cisco NCS 2000 Series Transport Node Controller with OTDR (TNCS-O) Card

●      Cisco NCS 2000 Series Transport Node Controller2 (TNCS2) Card

●      Cisco NCS 2000 Series Transport Node Controller2 with OTDR (TNCS-2O) Card

The TNC, TNCE, TNCS, TNCS2, TNCS-O and TNCS-2O cards feature two Optical Service Channel (OSC) ports that support a Supervisory Data Channel (SDC), distribution of synchronous clocking, and a 100-Mbps User Data Channel (UDC). The TNCE, TSCE, TNCS,TNCS2, TNCS-O and TNCS-2O cards support Synchronous Ethernet (SyncE)/Source-Specific Multicast (SSM). This is summarized in Table 1.

Table 1.        Controller Card Feature Differentiation

Common features

All controller card versions incorporate a highly stable Stratum 3 internal timing reference to provide system timing based on input received from an external BITS source. Synchronous status messaging helps the system select the best timing sources, and a holdover mode maintains timing accuracy when preprovisioned synchronization references are not available.

Nonvolatile database storage for communication, provisioning, and system control is provided, allowing full database recovery and survivability with complete system power loss. In addition, short-term clock recovery is also supported, reducing the need to reset the calendar after a brownout or complete power outage. A memory module is built into each ONS 15454 MSTP and NCS 2000 Series chassis and synchronized with the memory of the cards, thereby providing a backup to the node IP address, software package, and circuit database. This synchronization provides faster time to recovery when the node is used in simplex mode during a control-card replacement.

The cards have two built-in interface ports for accessing the system: an RJ-45 connector and an RS-232 (Not available for TNCS2 and TNCS-2O). The RJ-45 port provides 10BASE-T Ethernet connectivity to the system, providing local and remote access to the craft-management system, Cisco Transport Controller, through a common web interface. You can also use this port for interconnection to customer Operations Support Systems (OSSs) and Network Management Systems (NMSs), providing integration to external Element Management Systems (EMSs), NMSs, and OSSs.

The cards provide enhanced security by allowing you to configure the front panel and chassis Ethernet interfaces as regenerators or provision them with individual IP and MAC addresses for segregated craft and DCC access. The RS-232 port provides a serial ASCII interface for local craft access using VT100 emulation so that you can enter Transaction Language 1 (TL1) commands directly over a Telnet session without the assistance of a browser.

The front panels of the cards multicolored LEDs for a quick view of the card activity status, raised network alarms, shelf voltage input, LAN interface, and synchronization. Two front-panel buttons allow you to quiet an active external audible alarm (alarm-cutoff button) or test the working state of system LEDs.

TNC, TNCE, TNCS and TNCS2 Common features

TNC, TNCE and TNCS card versions can provide system timing based also on incoming SONET or SDH optical signal. TNCS2 supports only Fast and Gigabit Ethernet on OSC ports

TNC, TNCE and TNCS card versions integrate Optical Service Channel (OSC) functionality: Each ONS 15454 TNC, TNCE, or TNCS card can be configured with one or two SFP ports to provide the OSC termination. In addition to OC-3/STM-1, the OSC can be configured with Fast Ethernet or Gigabit Ethernet for increased bandwidth and compatibility in future packet transport architectures.

Cisco ONS 15454 TNC Card

Cisco NCS 2000 TNCS2 card

In the Cisco Network Convergence System 2015 (NCS 2015), Network Convergence System 2006 (NCS 2006), Cisco ONS 15454 M6 Multiservice Transport Platform (MSTP), and Cisco Carrier Packet Transport (CPT) 600, the cards can be equipped as active and standby, providing 1:1 equipment protection. In the Cisco Network Convergence System 2002 (NCS 2002), Cisco ONS 15454 M2 MSTP, and Cisco Carrier Packet Transport (CPT) 200, a single card is used in simplex mode.

TNCS-O and TNCS-2O Features

TNCS-O card cards can be equipped as active and standby, providing 1:1 equipment protection in Cisco Network Convergence System 2015 (NCS 2015) and Network Convergence System 2006 (NCS 2006) or Cisco ONS 15454 M6 Multiservice Transport Platform (MSTP).

Cisco ONS 15454 TNCS-O Card

Each TNCS-O Line Card supports 2x OTDR/OSC embedded ports:

●      1 OTDR per Degree with up to 4 Degrees per chassis – Dedicated OTDR

●      Digital – Bit Stream instead of High Power Optical Pulse

●      In Band – Take measurements directly @ 1518nm, no extrapolations

●      Bi-directional operation – Tests both fibers and both directions of the fiber with a single device

●      1 x Fast Ethernet 1518 nm OSC per Degree with up to 4 Degrees per chassis

Each TNCS-2O Line Card supports 2x OTDR/OSC embedded ports and 2x OSC ports:

●      1 OTDR per Degree with up to 4 Degrees per chassis – Dedicated OTDR

●      Digital – Bit Stream instead of High Power Optical Pulse

●      In Band – Take measurements directly @ 1518nm, no extrapolations

●      Bi-directional operation – Tests both fibers and both directions of the fiber with a single device

●      1 x Fast/Gigabit Ethernet 1518 nm OSC per Degree with up to 4 Degrees per chassis

●      2x OSC ports for generic OSC mode of operation without OTDR

OTDR Functionality

Optical Time Domain Reflectometry is used to provide information about basic characteristic of the Optical fiber among Optical nodes, like Insertion Loss and concentrate point of reflection.

OTDRs are widely used for detecting fiber anomalies, such as fiber-to-fiber connection losses and reflectance. They can be fusion splices, butt joints and connectors. Typically an OTDR instrument transmits a pulse along an optical fiber (the Pulse method). A portion of the light of the pulse is returned toward the transmitter from each point along the optical fiber. Such returns are produced both from the natural light backscattering (Rayleigh Scattering), and from localized Fresnel reflection from fiber-to-fiber connections.

By measuring the amount of light returned back at a given delay from pulse injection into the fiber, and comparing this light pulse with the original probe signal injected into the fiber, it is possible to detect many fiber characteristics and anomalies, such as fiber Insertion Loss (dB/km) and fiber-to-fiber Connections Loss and Reflection Loss (dB).

This technique, however, requires laser pulses with relatively high peak power, which do not fit very well with the objective of integrating OTDR capabilities into TNCS-O. For this reason a different measurement strategy has been selected, the correlation method.

In the correlation method, a Pseudo Noise Bit Sequence is transmitted in the fiber instead of just an optical pulse. The reflected light is sampled against time and mathematically correlated with the original probe sequence. Similar to the Pulse method, the correlation of transmitted and received signals at a given time delay provides information about losses and reflections. The correlation method allows for better noise filtering, providing a significant noise advantage respect to pulse method (12 dB measured). Also, since pulse probe energy spreads along a bit stream, this method better adapts to the typical lasers used in pluggable interfaces, which can provide lower TX Power. OTDR signals operate at 1518nm offering bi-directional operations, allowing so Tests both fibers and both directions of the fiber with a single device.

Different event accuracy of OTDR is available for 4 “fiber zones” that are selectable by the user and defined in the following table.

Reported accuracy could be reduced in presence of high reflectance event in the zone under measurement. A dedicated GUI panels is available in CTC to provide FCAPS functionality for OTDR.

Features and benefits

The Cisco ONS 15454 TNC, TSC, TNCE, TSCE, NCS 2000 Series TNCS, TNCS2, TNCS-O and TNCS-2O cards provide the following features:

●      Integrated multishelf management: The ONS 15454 TNC, TNCE, TSC, TSCE, TNCS and TNCS2 cards - coupled with the External Connection Unit (ECU) of the ONS 15454 M6, NCS 2006, or NCS 2015 - can support up to 50 subtended shelves (if chassis is NCS2006 or 15454-M6) or 10 subtended shelves (if chassis is NCS2015) in a cascade configuration without using an external switch or separate Ethernet switch card.

●      Eighty-four Section DCC (SDCC) and multiplex section DCC (MSDCC) terminations allow the interconnection of multiring and linear systems on a single-shelf assembly, reducing networking costs.^*

●      Eighty-four SDCC tunnels or SDCC-to-Line DCC (LDCC) tunnels provide interface flexibility for transparent transport of third-party DCC overhead channels.^*

●      Integrated system input-voltage monitoring facilitates proactive identification of DC power-system problems.

●      Time-and-date clock recovery after brownout or power loss prevents clock reprogramming.

●      A complete shelf lamp test through a faceplate pushbutton simplifies technician LED maintenance testing for TNC, TNCE, TNCS, TNCS-O controller cards.

●      Local and remote craft user access allows technicians to access nodes from anywhere.

●      Local audible alarm cutoff squelches office audible or visual alert systems.

●      Through the Cisco ONS 15454 M6 External Connection Unit (ECU), the cards support connection to up to six subtended shelves or to the primary shelf.

●      The cards support up to 24 dry-contact external alarms.

Feature availability

Table 2 outlines the feature availability supported on the Cisco ONS 15454 TNC, TSC, TNCE, TSCE, NCS 2000 Series TNCS, TNCS2, TNCS-O and TNCS-2O cards.

Table 2.        Feature availability

Product specifications

Tables 3 and 4 outline the specifications for the Cisco ONS 15454 TNC, TSC, TNCE, TSCE, NCS 2000 Series TNCS, TNCS2, TNCS-O and TNCS-2O cards.

Table 3.        Product specifications

Table 4.        Product specifications (All Cards)

System requirements

Table 5 outlines the system requirements for the Cisco ONS 15454 TNC, TSC, TNCE, TSCE, and Cisco NCS 2000 Series TNCS cards.

Table 5.        System requirements

OTDR specifications

Table 6.        OTDR Optical specifications are presented below for TNCS-O and TNCS-2O line cards

Ordering information

Table 7 lists the ordering information for the Cisco ONS 15454 TNC, TSC, TNCE, TSCE, and NCS 2000 Series TNCS cards. To place an order, visit the Cisco Ordering Home Page and refer to Table 5. To download software, visit the Cisco Software Center. https://www.cisco.com/cisco/software/type.html?mdfid=278281788&i=rm.

Table 7.        Ordering information

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