HSR6800 Router Series Interface Module Guide

NOTE:

• T3 represents the tertiary group rate of the T series in the TDM system, which is 44.736 Mbps.

• A T3 channel can be channelized into 28 T1 channels through the demultiplex processes of T23 and

T12, with each T1 channel supporting both the T1 and CT1 operating modes. T23 indicates either

T2-to-T3 multiplex or T3-to-T2 demultiplex, and T12 indicates T1-to-T2 multiplex or T2-to-T1 demultiplex.

T23 and T12 discussed here represent the demultiplex process.

Front panel

Figure 23 Front panel

(1) Carrier signal LED (LINK/ACT) (2) TX interface

(3) RX interface (4)

Captive screw

(5) Loopback/alarm LED (LP/AL)

LEDs

Table 33 LED description

LED Status Descri

tion

LINK/ACT

Off No carrier signals are being received.

On Carrier signals are being received.

Flashing Data is being transmitted or received.

LP/AL

Off No loopback or alarms occur.

On The interface is in loopback state.

Flashing

At least one alarm of the type of AIS, LFA, or RAI has occurred.

• LFA—Loss of frame alignment.

• AIS—Alarm indication signal.

• RAI—Remote alarm indication.

Interface specifications

Table 34 Interface specifications

Item S

ecification

Connector type

SMB

Number of interfaces