CTC Union FMUX-01A User Manual Download

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Chapter 1. Introduction

Version 1.2 Apr 2006

The

Fiber Multiplexer

and

T1 Interface Cards

fully meet all E1 and T1 specifications

including ITU-T G.703, G.704, G.732, G.733, G.823 and G.824. The Bridge Interface Card meets
all Ethernet specifications for IEEE802.3 and IEEE802.3u.

Each

4-CHANNEL Port Card

features diagnostic capabilities for performing local loop

back or remote loop back (except for Ethernet Bridge card). The loop back function is controlled by
the front panel LCD menu, terminal mode (RS-232 console) or when the SNMP option board is
installed via Telnet or SNMP set commands.

Up to five clock source selections are provided. Without the external clock card option, the

unit operates from an internal free running oscillator. When the external clock card option is
installed, additional clock sources may be selected from the clock card's own internal oscillator or
from an external clock references for E1 PCM, E1 TTL, T1 PCM, or T1 TTL. All E1 and T1
equipment may connect to the

Fiber Multiplexer

without regard to master or slave timing. The

Fiber Multiplexer

is completely transparent to clocking and data transmission. This makes

configuration of the MUX extremely easy.

The Fiber Multiplexer provides optical interfaces (1+1) that are completely redundant and hot

swappable. By utilizing a modular design, fiber type (single mode or multi mode), the optical power
margin requirement and connector type can be easily chosen at installation time. This provides an
extremely flexible main unit which is not tied to a fixed optical interface. When two optical
modules are installed, the secondary module is in "standby", in case of any failure in the primary
path. If the primary fiber path fails, the switchover time to the secondary fiber is less than 50
milliseconds (industry standard). The automatic fall over function of the fiber allows the fiber to
continue to run in the secondary fiber, even after primary fiber connection is restored. This will
avoid another 50 millisecond loss of transmission on all channels. The fiber path can also be forced
from primary to secondary or back through the LCD menu or terminal console.

When the

Fiber Multiplexer

is ordered with an optional

SNMP Card

, the card is installed

inside the chassis. Configuration is accomplished via local control on the asynchronous RS-232 port
with a standard VT-100 terminal, via Ethernet and Telnet, or via any standard SNMP network
management software over Ethernet. The

Fiber Multiplexer

also has a Windows™ based GUI

management program that communicates with the

Fiber Multiplexer

via SNMP protocol to

display all status in real time, configure the unit, provides performance monitoring, and display
alarm buffers and real time trap messages. If the

SNMP Card

option is not installed, local and

remote management is still possible via the unit's internal menu system accessible from the front
panel LCD and menu keys, or via the asynchronous RS-232 port with a standard VT-100 terminal.

The

Fiber Multiplexer

also includes the ability to do in-band remote configuration. Once

the fiber optic link has been established, the remote unit may be configured or status checked from
the local unit using any of the available management options.