User manual

Chapter 2 Installation

The FIB1-E1 and FIB1-T1 may also be applied in a transparent DSU/CSU

configuration, ie. paired with an FIB1-DATA converter. Below are some typical

clocking applications when paired in this configuration.

FIB1-E1/T1 FIB1-DATA

E1/T1 Datacom

recovery

Figure 2-20 E1/T1 with Datacom (V.35, X.21, RS-530 etc.) termination

In the above example, the connected E1/T1 equipment provides the clock source

for the FIB1-E1/T1 converter. The FIB1-DATA recovers the clock from the fiber and

acts as a DCE to any connected DTE device (such as a router). Because this is a

transparent application, the data rate must be 2.048Mbps (1.544Mbps for T1), clear

channel.

FIB1-DATA FIB1-E1/T1

Datacom E1/T1

external

Figure 2-21 E1/T1 extension from Datacom network

In the example above, a serial datacom network provides clock and data to the

connected FIB1-DATA. The data is then transmitted transparently over the fiber and

recovered by the FIB1-E1/T1, where data is transmitted at the received data rate.

Because this is a transparent application, the data rate must be 2.048Mbps

(1.544Mbps for T1), clear channel.

FIB1-E1/T1 FIB1-DATA

E1/T1 Datacom

internal

Figure 2-22 Another application with FIB1-DATA as clock source

Fiber

TCRX

TX RC

Fiber

TXETC

Fiber

TCRX