Cisco SONET/SDH Specifications download pdf (Page 4)

Installing Cisco ONS 15454 SONET/SDH OPT-BST Cards

78-16594-02

OPT-BST Card Description

The OPT-BST features include:

• Fixed gain mode (with programmable tilt)

• True variable gain

• Fast transient suppression

• Non-distorting low-frequency transfer function

• Provisionable maximum output power

• Fixed output power mode (mode used during provisioning)

• Constant drive current mode (test mode)

• MAL for fiber based DCU

• ASE compensation in fixed gain mode

• Full monitoring and alarm handling with provisionable thresholds

• Optical safety features, including signal loss detection and alarming, fast power down control, and

reduced maximum output power in safe power mode

• OSRI, which is a feature capable of shutting down the optical output power or reducing the power

to a safe level (automatic power reduction)

• ALS, which is a safety mechanism used in the event of a fiber cut

OPT-BST Card Level Indicators

The OPT-BST card has three card-level LED indicators.

OPT-BST Port-Level Indicators

You can find the status of the card ports using the LCD screen on the ONS 15454 ANSI fan-tray

assembly.Use the LCD to view the status of any port or card slot; the screen displays the number and

severity of alarms for a given port or slot.

The OPT-BST amplifier has eight optical ports located on the card faceplate:

• MON Rx is the output monitor port (receive section).

• MON Tx is the output monitor port.

Table 1 OPT-BST Card-Level Indicators

Card-Level Indicators Description

Red FAIL LED

The red FAIL LED indicates that the card's processor is not ready or that an

internal hardware failure has occurred. Replace the card if the red FAIL LED

persists.

Green ACT LED

The green ACT LED indicates that the OPT-BST is carrying traffic or is

traffic-ready.

Amber SF LED

The amber SF LED indicates a signal failure or condition such as LOS on

one or more of the card's ports. The amber SF LED also illuminates when

the transmit and receive fibers are incorrectly connected. When the fibers are

properly connected, the light turns off.

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