Product Description

Product Description
66 (98) © Nokia Corporation Draft DN991444
Nokia Proprietary and Confidential Issue 3-0 en Draft
The front panel of the FXC E1 has four pairs of unbalanced BT-43 interface
connectors (separate TX and RX connectors) for the 75 Ω E1 interface. The TX
and RX connectors are connected to each other with a grounding bridge. By
removing the grounding bridge, the RX connector’s outer conductor can be
changed from direct grounding to capacitive grounding.
For more information on the FXC E1 transmission unit, refer to Nokia MetroHub
Product Description.
FXC E1/T1 (VXTB):
In addition to digital speech data, the FXC E1/T1 transmission unit can also
transfer operating and maintenance information to other equipment in the
network.
FXC E1/T1 offers the following main features:
• Four Abis line interfaces to the 2 Mbit/s (E1) or 1.5 Mbit/s (T1)
transmission line
• Grooming, branching and loop protection support
• 8 Kbit/s level cross-connection functions between the four Abis line
interfaces and the D-bus
• Nokia Q1 E2E traffic routing model, which allows easy transmission
network planning
The front panel of FXC E1/T1 has four balanced TQ connectors (for pin order and
configuration see Figure 26 and Table 6). The connectors offer both TX and RX
direction. Each line interface can be independently configured to be a 120 Ω E1
interface or 100 Ω T1 interface, which enables using the balanced FXC E1/T1
unit as an E1/T1-converter.
For more information on the FXC E1/T1 transmission unit, refer to the Nokia
MetroHub Transmission Node Product Description.