Cisco Systems 15454 4.17 OC192 LR/STM64 LH ITU 15xx.xx Card

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Cisco ONS 15454 Reference Manual, R7.0

78-17191-01

Chapter 4 Optical Cards

4.17 4.16.1 OC192 LR/STM64 LH 1550 Card-Level Indicators

The card port features a 1550-nm laser and contains a transmit and receive connector (labeled) on the

card faceplate.The card uses a dual SC connector for optical cable termination. The card supports 1+1

unidirectional and bidirectional facility protection. It also supports 1:1 protection in four-fiber BLSR

applications where both span switching and ring switching might occur.

The OC192 LR/STM64 LH 1550 card detects SF, LOS, or LOF conditions on the optical facility. The

card also counts section and line BIT errors from B1 and B2 byte registers in the section and line

overhead.

Table 4-17 describes the three card-level LEDs on the OC192 LR/STM64 LH 1550 card.

You can find the status of the OC192 LR/STM64 LH 1550 card port by using the LCD screen on the

ONS 15454 fan-tray assembly. Use the LCD to view the status of the port or card slot; the screen displays

the number and severity of alarms for a given port or slot.

Note The optical output power of the OC192 LR/STM64 LH 1550 (+4 dBm to +7 dBm) is 6 dB lower than in

L-64.2b of the 10/2000 prepublished unedited version of ITU-T G.691 (+10 dBm to +13 dBm). However,

the total attenuation range of the optical path, 22 to 16 dB, is maintained by the optical receiver

sensitivity range of the OC192 LR/STM64 LH 1550 (–7 dBm to –24 dBm). This sensitivity range

outperforms the specification in L-64.2b of the 10/2000 prepublished unedited version of ITU-T G.691.

The resulting link budget of the card is 26 dBm.

4.17 OC192 LR/STM64 LH ITU 15xx.xx Card

Note For hardware specifications, see the “A.6.16 OC192 LR/STM64 LH ITU 15xx.xx Card Specifications”

section on page A-39. See Table 4-2 on page 4-4 for optical card compatibility.

Table 4-17 OC192 LR/STM64 LH 1550 Card-Level Indicators

Card-Level Indicators Description

Red FAIL LED The red FAIL LED indicates that the card’s processor is not ready. Replace

the card if the red FAIL LED persists.

ACT/STBY LED

Green (Active)

Amber (Standby)

If the ACT/STBY LED is green, the card is operational and ready to carry

traffic. If the ACT/STBY LED is amber, the card is operational and in

standby (protect) mode or is part of an active ring switch (BLSR).

Amber SF LED The amber SF LED indicates a signal failure or condition such as LOS, LOF,

or high BERs on the card’s port. The amber SF LED is also on if the transmit

and receive fibers are incorrectly connected. If the fibers are properly

connected, the light turns off.