OSMC01

OSMC01 (Optical Shelf Management Controller) performs Optical Supervisory Channel (OSC) processing up to 100Mbps, control path processing and timing functions. The system supports redundancy on the OSMC01 card. This card is supported in slots 9 and 10 of TJ1600 Type-6SR chassis.

The OSC ports are used for out of band optical management communication for the DWDM configuration of the node.

Static Discharge Warning STATIC DISCHARGE DAMAGE: Static charge can damage the equipment. While handling cards for making system interconnections, wear an ESD strap to discharge the static buildup.

Optical Safety Warning OPTICAL SAFETY: Do not stare or look directly into the optical connector output beam, as this can cause irreparable damage to your eyes and even loss of eye sight.

Front Panel

The following figure shows the front panel diagram of OSMC01 card supported in TJ1600 Type-6SR chassis without the mechanical adapter:

Optical Shelf Management Controller - OSMC01

Power Specifications

Power Specifications - OSMC01 card

Specification	Range
Input Voltage	-48V DC
Power consumption	60W

Visual Indicator Details

The visual indicators on the OSMC01 card include two LEDs, the ACTIVE and the STATUS.

Possible LED status and their significance - OSMC01

Card State	Status LED (Sts)	Active LED (Act)
Card initialization: State before the card initialize is complete on card insertion.	Amber (Steady)	Amber (Steady)
Card in service: Initialization complete and card in service.	Green (Steady)	Green (Steady)
Card mis-match: Node has already configured the slot with some other card.	Amber	Amber
Card fails during boot up.	Red	Amber
Card failed while in-service.	Red	Green
Improper jack in of the card.	Green (Blinking)	Green (Blinking)
Hard Reset: All devices reset, FPGAs cleared and reprogrammed. Goes to initializing state next.	Amber	Amber
Soft Reset: Software is restarted, devices are reinitialized with provisioning. Goes to initializing state next.	Green	Green
Early Ejector LED status: Both the ejectors are removed.	Amber	Off
Early Ejector LED status: One ejector is removed (either left or right).	Green	Green

Diag Interface

The Diag interface is a USB connector provided on the front panel of the OSMC01 card. This interface offers a serial connection to node using which a user can launch a terminal session to log onto the Operating System.

NOTE: The diagnostic interface is meant for use by authorized Tejas Networks personnel only.

OSC Interface

Optical Supervisory Channel (OSC) interface receives the management information from the Optical supervisory channel filter, on the DWDM transmission path, primarily at the Intermediate Line Amplifier (ILA) sites.

OSC carries the management information related to the DWDM channels and enable to detect the fiber cuts and/or transmission degradation in the DWDM trunk. Typical wavelengths used for supervisory channel are 1490nm and 1510 nm which are well outside the C-band DWDM transmission.

Two SFP interfaces (OSC1 and OSC2) are provided for processing the OSC information from east and west directions which can cater up to 44dB of loss in the standard optical fiber.

Timing Interface

OSMC is the timing master for SDH/1588 V2 timing schemes.

NOTE: Timing interface is not supported for this release.

Functional Description

OSMC01 card has a processor complex to perform APS/IBC route communication/Node management and other miscellaneous functions required for the system.

OSMC01 card supports the following functional features:

Four Passive Inventory Management (PIM) ports.
Switch to holdover in absence of selected primary and/or secondary reference clocks.
Card present information of all other cards in the system to detect jack-in/jack-out of the cards in the system.
Generate and distribute system timing (clocks and frame syncs), system frame and system multi-frame signals to all line card slots.
Two OSC channels of 155 Mbps and two user channels of 10 Mbps are present.
Stratum-3 Timing source.
Temperature monitoring.
Supports 4GB disks.

NOTE: Point number 4, 5, 6 and 7 are not supported for this release.

The key functions of OSMC01 card are as follows:

Processor Function: OSMC01 card has a processor that performs the configuration, control and processing of all the other subsystems. The processor is a micro controller which has on board external memory to implement the required functions. The software residing in this block controls the overall management of the system. Processor card is a daughter card that interfaces with different memory interfaces like SDRAM, Flash Memory, PCMCIA and other memory. This function is also responsible for implementing watchdog logic for the system.
OSC Processing: Optical supervisory channel (OSC) interface receives the management information from the Optical supervisory channel filter, on the DWDM transmission path, primarily at the intermediate line amplifier (ILA) sites. OSC carries the management information related to the DWDM channels and enable to detect the fiber cuts and/or transmission degradation in the DWDM trunk.
Synchronization Function: OSMC01 card has a Stratum-3 compliant clock generation unit. The PLL in synchronization unit can synchronize to a variety of timing sources, selected via the user interface. Synchronization Status Messaging (SSM) is implemented in the software to propagate the clock quality information to neighboring elements and to select the best quality clock among a set of nominated clock sources. The synchronization unit is commonly called the timing module.

NOTE: Synchronization Function is not supported in this release.