Verilink PRISM 4051 (34-00253.2) Product Manual - Manual (Page 19)

Data Port Connections 13
Port Connections The PRISM 4051 is a nest-mount module that fits into the Verilink 1051 chassis,
which provides the DDS Network and Data Port connections as shown in
Figure 2-9 on page 15 and Figure 2-10 on page 15.
DDS NET
The DDS network is connected to the NET connector (8-pin modular) following
the RJ-48S standard through the supplied adapter (part number 9-1001-070-010).
Transmit data (from the CSU/DSU to the network) is on pins 1 and 2 and receive
data (from the network to the CSU/DSU) is on pins 7 and 8.
The network side of the CSU/DSU is referred to as the network interface. This
interface contains an ALBO (automatic line build out) which allows the CSU/DSU
to be located a substantial distance away from the telco network interface with a
receive signal level to
−
45 dB.
The network physical interface is a standard
RJ-48S 8 -pin modular jack with the pinout
shown in Table 2-19.
In accordance with FCC Rules, Part 68.218 (b), notify the telephone company before
disconnecting this product.
Table 2-19 RJ-48S Adapter Pinout
Pin NET Interface
1 Data Out (R1)
2 Data Out (T1)
3, 4, 5, 6 Not Used
7 Data In (T)
8 Data In (R)