Product Description

Product Description
64 (98) © Nokia Corporation Draft DN991444
Nokia Proprietary and Confidential Issue 3-0 en Draft
Figure 25. Radio link transmission unit alternatives
6.5.2 Unit alternatives for wireline transmission
The following wireline transmission units are available for the Nokia MetroSite
EDGE Base Station:
FC E1/T1 (VXEA)
The FC E1/T1 transmission unit:
• Provides one Abis line interface to the 2 Mbit/s (E1) or 1.5 Mbit/s (T1)
transmission line
• Operates as the termination point in a chain or star configuration
• Has no cross-connection capability
On its front panel, the FC E1/T1 has two unbalanced 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.
There is also one balanced connector, which can be configured to be a 120 Ω E1
interface or 100 Ω T1 interface. The balanced connector offers both the TX and
RX direction. The pin order and pin configuration of the balanced TQ connector
are presented in Figure 26 and in Table 6.
FXC RRI
FB2
FB1