CISCO PA-4T+ 7200 7500 4 port serial Enhanced,
PA-4T+, 800-01838-05, 73-1577-05
The PA-4T+ provides four synchronous serial ports, and each port supports full-duplex operations at T1 and E1 speeds.
Speed is controlled by three variables:
•The number of ports in use
•The maximum speed allowed by the port adapter
•The maximum speed of the attached CSU/DSU.