User manual

Chapter 2 Installation
37
2.12 FIB1-E1/T1
The FIB1-E1 and FIB1-T1 are high-performance G.703 E1 or T1 (DS1) over fiber
media converters. These converters fully support transparent transmissions of
2.048Mbps (or 1.544Mbps for T1) and completely handle clocking in point-to-point
or network applications. Additionally, the converters may be linked to FIB1-DATA
converters in unframed E1 (T1) at fixed data rate of 2048Kbps (1544Kbps for T1).
There are three models of FIB1-E1 and FIB1-T1 media converters, E1-BNC, E1-
RJ-45, and T1-RJ-45. The E1-BNC model supports coaxial connections with BNC
connectors at 75 ohm impedance, while the E1-RJ-45 model accepts twisted pair
wiring at 120 ohm impedance on a shielded RJ-45 connector wired to industry
standard USOC RJ-48C. The T1 model sports an RJ-48C for twisted pair wiring at 100
ohms impedance.
There is one 4 position DIP switch located on the face of the FIB1-E1 and FIB1-
T1 to configure the units when used standalone. When the FIB1-E1 and FIB1-T1 is
placed in the FRM301 with SNMP, the settings are controlled by the chassis
management system and any DIP settings are ignored. Additionally, when placed in
the managed rack, the remotely linked FIB1-E1 and FIB1-T1 units are also
controlled and configured through the management system.
Figure 2-16 FIB1-E1/T1 Fiber Media Converter Cards
(E1 BNC model on left, E1 RJ-45 model on right)
Fiber Media
(SC shown)
Status LEDs
G.703 Port
Configuration
DIP switch