3com MSR 20 Manual Do Utilizador

The MIM-1G.SHDSL module uses regular telephone cables for connection.

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You only need a telephone cable to connect one port on a G.SHDSL module to the 
PSTN network.

By far, the following ATM modules are available for the routers:

■

1-port ATM (Asynchronous Transfer Mode) 155 Mbps multimode fiber 
interface module (MIM-1AMM)

■

1-port ATM 155 Mbps single-mode fiber interface module (MIM-1ASM)

■

1-port ATM 155 Mbps single-mode long-haul fiber interface module 
(MIM-1ASL)

These ATM modules function in the system to provide ATM interfaces for routers, 
supporting:

■

Two frame formats: SDH STM-1 and SONET OC-3;

■

Scrambling in data transmission;

■

Both line clock (when working as DTE interface), and internal clock (when 
working as DCE interface);

■

Local cell loopback, local payload loopback, and remote loopback.

Table 64   Description of the LEDs on the MIM-1G.SHDSL panel

LINK 

OFF means no link is present; ON means a 
link is present. 

ACT 

OFF means no data is being transmitted or 
received; blinking means data is being 
received or/and transmitted.

Table 65   Interface attributes of MIM-1AMM/MIM-1ASM/MIM-1ASL

Optical fiber connector  SC 

Number of ports 

1 

Interface standard 

SONET OC-3/SDH STM-1 

Interface rate 

155 Mbps