Technical data

Installing and Operating BayStack ARN/DC Routers
C-10
116273-B Rev 00
FT1/T1 DSU/CSU Connections
The ARN/DC supports the conversion of data (HDLC protocol) from a T1 line
using an optional FT1/T1 DSU/CSU adapter module. The integrated DSU/CSU
functionality allows you to connect directly to the T1 network, as opposed to
connecting via an external adapter. This solution reduces equipment costs and
simplifies connection to a T1 carrier.
The ARN/DC FT1/T1 DSU/CSU implementation supports dynamic
reconfiguration, Fractional T1 loopback, Facility Data Link (FDL) functions, and
an integrated Bit Error Rate Test (BERT) line tester. Configuring WAN Line
Services describes these services and how to configure them for connection to a
T1 network.
Table C-8
lists the ARN/DC FT1/T1 DSU/CSU connector pinouts.
Table C-8. RJ-48C Connector Pinouts
Pin Assignment Pin No. Signal
1 Receive Data RING
2 Receive Data TIP
3 No Connect
4 Send Data RING
5 Send Data TIP
6 No Connect
7 No Connect
8 No Connect
12345678