the 202(S) is for Dial-Up S/T is dial-up and lease line (2 or 4 wire)

• UDS 202S modem 62025117
• UDS 202S/T modem 6202525900010
• UDS202S/T/R modem 62025232
• UDS 202S/T modem card modem 62025276
• UDS 202S/T modem S/A (stand alone) 62025278
• UDS 202S/D modem SYNC Dial-Up
• RM card 62025276

  
   

                            see 202S-T_Manual.htm

                   click here for lease line modem UDS Motorola 202T modem

                        click here for all 202 modems