
Interface Card and Interface Module Manual
H3C MSR 20/30/50 Series Routers
Chapter 3 Multifunctional Interface Modules
3-48
3.13.5 Connecting the Interface Cable
You only need a telephone cable to connect one port on a G.SHDSL module to the
PSTN network.
3.14 MIM-1AMM/MIM-1ASM/MIM-1ASL
3.14.1 Introduction
By far, the following ATM modules are available for the routers:
z
1-port ATM (Asynchronous Transfer Mode) 155 Mbps multimode fiber interface
module (MIM-1AMM)
z
1-port ATM 155 Mbps single-mode fiber interface module (MIM-1ASM)
z
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:
z
Two frame formats: SDH STM-1 and SONET OC-3;
z
Scrambling in data transmission;
z
Both line clock (when working as DTE interface), and internal clock (when working
as DCE interface);
z
Local cell loopback, local payload loopback, and remote loopback.
3.14.2 Interface Attributes
Table 3-29
Interface attributes of MIM-1AMM/MIM-1ASM/MIM-1ASL
Attribute
MIM-1AMM
module
MIM-1ASM
module
MIM-1ASL
module
Optical fiber
connector
SC
Number of ports
1
Interface standard SONET OC-3/SDH STM-1
Interface rate
155 Mbps
Cable type and
the maximum
transmission
distance
Multimode optical
fiber of 2 km (1.2
mi.) transmission
distance
Single-mode
optical fiber of 15
km (9.32 mi.)
transmission
distance
Single-mode
optical fiber of 30
km (18.6 mi.)
transmission
distance
Transmitter LED
Laser
Laser
Transmission
optical power
Min: –21 dBm
Max: –14 dBm
Min: –15 dBm
Max: –8 dBm
Min: –5 dBm
Max: 0 dBm
Receiver
sensitivity
Min: –28 dBm
Max: –8 dBm
Min: –30 dBm
Max: –14 dBm
Min: –34 dBm
Max: –10 dBm