The parameters of SMDR4 are:
• 2400 (Minimum)baud rate (You can change it up to 19200)
• None parity
• 8 data bit
• 1 stop bit
• hardware flow control (CTS/RTS)

the SMDR must be connected to a PC through the RS232 interface.You can admin the SMDR using feature 9*2.
I hope that helps