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(8) MAC external SFP port carrier si

nal LED (LINK/ACT)

(9) MAC external SFP port loopback/alarm LED (LP/AL) (10) Mate interface of the MAC RPR node

LEDs

Table 19 LED description

LED Status

Descri

tion

RPR status

PASSTHRU

(Green)

Off The node is not in PASSTHRU.

On The node is in PASSTHRU.

MATESYNC

(Green)

Off The mate interface is not synchronized.

On The mate interface is synchronized.

WRAP

(Yellow)

Off No WRAP exists.

On WRAP occurs on this node.

Flashing (0.5 Hz) WRAP occurs on another node.

STEER

(Yellow)

Off No STEER exists.

On STEER occurs on this node.

Flashing (0.5 Hz) STEER occurs on another node.

External optical

interface

SDH/SONET at

physical layer

LINK/ACT

(Green)

Off No carrier signals are being received.

On Carrier signals are being received.

Flashing (4 Hz) Data is being transmitted or received.

LP/AL

(Yellow)

Off No loopback or alarms occur.

On The port is in loopback state.

Flashing (0.5 Hz) A minimum of one alarm, AIS, LFA, or RAI, occurs.

Interface specifications

Table 20 Interface specifications

Item S

ecification

Connector type SFP/LC

Number of interfaces 4

Interface standards

• SONET STS-48

• SDH STM-16

Interface speed 2488.32 Mbps

Optical

transmit

power

Type Short distance

Medium

distance

Long distance

Ultra-long

distance

Min. –10.0 dBm –5.0 dBm –2.0 dBm –2.0 dBm

Max. –3.0 dBm 0 dBm 3.0 dBm 3.0 dBm

Receiving sensitivity –18.0 dBm –18.0 dBm –27.0 dBm –28.0 dBm

Overload optical power –3.0 dBm 0 dBm –9.0 dBm –8.0 dBm

Central wavelength 1310 nm 1310 nm 1310 nm 1550 nm

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 84 85

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