User Manual
Modular Multi-service Integrated Optical Transmission Multiplexer
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is a power supply module with function of
over-current and over-voltage protection. It can be used to fulfill conversion
from DC-48V to +5V or from AC220V to DC-48V or +5V. Users can either
choose to use DC-48V power supply alone or apply DC-48V and AC220V
as mutual backup power supplies at the same time.
III. Description about Modules
A basic
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m consists of a
motherboard, four slots for optional pluggable interface boards, a power
switch module and an Ethernet daughter card. The system is provided in a
structure of 19″ standard rack. It can be used not only as the desktop
device independently but also installed inside the 19″ rack. The equipment
height is 1U.
§3.1 Mainboard (including Ethernet daughter card)
(1) To achieve encoding and decoding of 8 lines of 2.048 MHz signals;
(2) To fulfill conversion of framing signals and optical signals;
(3) To achieve loop-back of all bypass signals;
(4) To provide monitoring, order wire, and other functions;
(5) To indicate various alarming messages;
(6) To indicate various status;
(7) To provide network management interface (RS232 or RS485 optional),
four lines of 10M/100M Ethernet interface and one line of RS232 user
data channel.
§3.2 Service Interface Card
G.703 Interface Card
4 channels of G.703 interface available
DB37 Interface, to provide corresponding
external interface through adapter
Fully compliant with ITU-T G.703 recommended
standards
Interface Code Type: HDB3
Bit Rate: 2.048Mbit/s ± 50ppm
