
Passport 5430 Technical Specifications
306308-A Rev 00
A-9
56/64K DSU/CSU Interface
The Passport 5430 supports direct synchronous access to either a 56K dataphone
digital service (DDS) or 64K clear channel dedicated service using an optional
56/64K DSU/CSU adapter module. The 56/64K DSU/CSU interface uses an 8-pin
RJ-45 connector as shown in
lists the 56/64K DSU/CSU interface pin assignments.
FT1/T1 DSU/CSU Connections
The Passport 5430 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 Passport 5430 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 A-7.
56/64K DSU/CSU Interface Pin Assignments
Pin Assignment
Pin No.
Signal
1
TD (Ring)
2
TD (Tip)
3
Not used
4
Not used
5
Not used
6
Not used
7
RD (Tip)
8
RD (Ring)
1 2 3 4 5 6 7 8