Verilink ConnecT 56K DSU (896-502110-001) Product Manual - Manual (Page 19)

Connecting the cables
ConnecT 56K DS User Manual 2-3
Connecting the cable
This section describes the following connections:
■
Network interface connection
■
DTE data connection
■
Secondary channel connection
The ConnecT 56K DSU has an eight-position modular jack labelled
“TELCO.” The connector is used for connecting to the network when the
unit is configured for either dedicated or switched operation. The pin-out
for the “TELCO” connector is listed in Table 2-1, “Pin Assignments for
TELCO Connector”.
Table 2-1 Pin Assignments for TELCO Connector
The primary DTE should be connected to either the RS-232 DTE
connector or the CCITT V.35 DTE connector. The maximum cable
lengths recommended are 50 feet for the RS-232, and 100 feet for the
CCITT V.35. The pin assignments for the connectors are listed in
Table 2-2, “Pin Assignments for Primary RS-232 Connector” and
Table 2-3, “Pin Assignments for Primary V.35 Connector ”.
The V.35 connector is recommended for use with data rates above
19.2kbps. The RS-232 connector will work up to 56kbps with a lo
capacitance cable or with the external transmit clock option selected. The
Pin Name Description
1 R Transmit Data (from DSU to
Network-Ring)
2 T Transmit Data (from DSU to
Network-Tip)
3-6 Not Used
7 T1 Receive Data (from Network
to DSU-Tip 1)
8 R1 Receive Data (from Network
to DSU-Ring 1)
Network interface
connection
DTE data
connection