MULTI-TECH SYSTEMS, INC. MT64DSU Card Type CSU/DSU Chip Set Unidentified Maximum Data Rate 64Kbps Data Bus External Data Modulation Protocol B8RZ [Image] CONNECTIONS Function Label Function Label DC power CN1 Line out CN4 RS-232/422 CN2 Power switch SW3 V.35 CN3 USER CONFIGURABLE SETTINGS Setting Label Position CSU/DSU will operate in synchronous mode SW1/5 On CSU/DSU will operate in asynchronous mode SW1/5 Off RTS signal forced high SW1/6 On RTS signal normal SW1/6 Off DSR signal forced high SW1/7 On DSR signal normal SW1/7 Off Local loopback test disabled SW1/8 On Local loopback test enabled SW1/8 Off Digital loopback test disabled SW1/9 On Digital loopback test enabled SW1/9 Off Remote loopback test disabled SW1/10 On Remote loopback test enabled SW1/10 Off Test pattern disabled SW1/11 On Test pattern enabled SW1/11 Off Elastic store disabled SW1/12 On Elastic store enabled SW1/12 Off 4-wire line is connected SW2/1 On 2-wire line is connected SW2/1 Off Leased line is connected SW2/2 On Switched line is connected SW2/2 Off DTR signal forced high SW2/3 On DTR signal normal SW2/3 Off Factory configured - do not alter SW2/4 N/A LINE SPEED Synchronous Mode Asynchronous Mode SW1/1 SW1/2 9600bps 9600bps On On 19.2Kbps 19.2Kbps Off On 56Kbps 38.4Kbps On Off 64Kbps 57.6Kbps Off Off CLOCK SOURCE Setting SW1/3 SW1/4 Remote On On Internal Off Off External Off On DIAGNOSTIC LED(S) LED Color Status Condition SD Red On CSU/DSU is transmitting data SD Red Off CSU/DSU is not transmitting data RD Red On CSU/DSU is receiving data RD Red Off CSU/DSU is not receiving data CD Red On Carrier signal detected CD Red Off Carrier signal not detected CTS Red On CTS signal is high CTS Red Off CTS signal is low RTS Red On RTS signal is high RTS Red Off RTS signal is low OL Red On Network signal detected OL Red Off Network signal not detected TM Red On CSU/DSU is in test mode TM Red Off CSU/DSU is not in test mode TM Red Blinking Error detected in test pattern Proprietary AT Command Set AUTO-ANSWER Type: Register Format: AT [cmds] S0=n [cmds] Description: Controls when the CSU/DSU will automatically answer an incoming call. Command Function S0=0 Auto-answer disabled. S0=1 CSU/DSU will always answer incoming calls. S0=2 CSU/DSU will answer incoming calls when DTR signal is high. DATA LENGTH Type: Register Format: AT [cmds] S12=n [cmds] Description: Selects how many data bits will be transmitted. Command Function S12=0 8 data bits. S12=1 7 data bits. DATA PARITY Type: Register Format: AT [cmds] S14=n [cmds] Description: Selects what type of parity bit will be transmitted. Command Function S14=0 No parity. S14=1 Even parity. S14=2 Odd parity. DATA STOP Type: Configuration Format: AT [cmds] S13=n [cmds] Description: Selects how many stop bits will be transmitted. Command Function S13=0 1 stop bit. S13=1 1.5 stop bits. S13=2 2 stop bits. DIAL MODE - ASYNCHRONOUS Type: Register Format: AT [cmds] S15=n [cmds] Description: Selects how the CSU/DSU will perform dialing in asynchronous mode. Command Function S15=0 Asynchronous dialing disabled. S15=1 Dial number in memory location 0 on DTR going high. S15=2 AT dialing enabled. S15=3 Dial number in memory location 0 on DTR going high and AT dialing enabled. DIAL MODE - SYNCHRONOUS Type: Register Format: AT [cmds] S2=n [cmds] Description: Selects how the CSU/DSU will perform dialing in synchronous mode. Command Function S2=0 Synchronous dialing disabled. S2=1 Dial number in memory location 0 on DTR going high. S2=2 V.25bis dialing enabled. S2=3 Dial number in memory location 0 on DTR going high and V.25bis dialing enabled. DSR SIGNAL Type: Register Format: AT [cmds] S9=n [cmds] Description: Controls the behavior of the DSR signal. Command Function S9=0 DSR forced high. S9=1 DSR low when off-line or in test mode. ECHO CANCELLER Type: Register Format: AT [cmds] S7=n [cmds] Description: Controls the echo canceller tone. Command Function S7=0 Echo canceller tone disabled. S7=1 Echo canceller tone enabled. HELP Type: Immediate Format: AT [cmds] $ [cmds] Description: Displays the help screens. INACTIVITY TIMER Type: Register Format: AT [cmds] S3=n [cmds] Description: Selects how long the line must be inactive for the CSU/DSU to disconnect. Command Function S3=0 Disconnect on low DTR only. S3=1 Set inactivity timer to 10 minutes. S3=2 Set inactivity timer to 30 minutes. S3=3 Set inactivity timer to 60 minutes. S3=4 Set inactivity timer to 10 minutes and disconnect on low DTR. S3=5 Set inactivity timer to 30 minutes and disconnect on low DTR. S3=6 Set inactivity timer to 60 minutes and disconnect on low DTR. S3=7 Do not disconnect on inactivity or low DTR. REDIAL Type: Register Format: AT [cmds] S1=n [cmds] Default: 0 Range: 0 - 99 Unit: 1 redial Description: Sets how many times the CSU/DSU will attempt to redial a failed call. REMOTE CONFIGURATION REQUEST Type: Register Format: AT [cmds] S19=n [cmds] Description: Controls requests for remote configuration. Command Function S19=0 Remote configuration requests denied. S19=1 Remote configuration requests granted. RESET Type: Immediate Format: AT [cmds] *Rn [cmds] Description: Resets the CSU/DSU to power-up status. RTS SIGNAL Type: Register Format: AT [cmds] S8=n [cmds] Description: Controls the behavior of the RTS signal. Command Function S8=0 RTS forced high. S8=1 RTS follow CTS. SYNCH/ASYNCH MODE Type: Register Format: AT [cmds] S4=n [cmds] Description: Selects whether the CSU/DSU is in synchronous or asynchronous mode. Command Function S4=0 CSU/DSU is in asynchronous mode. S4=1 CSU/DSU is in synchronous mode. TRANSMIT PROFILE Type: Immediate Format: AT [cmds] *Wn [cmds] Description: Sends the current S-Register and switch settings to the remote CSU/DSU. V.25bis FORMAT Type: Register Format: AT [cmds] S16=n [cmds] Description: Selects bit- or byte-oriented dialing for V.25bis mode. Command Function S16=0 Bit-oriented dialing. S16=1 Byte-oriented dialing. Proprietary V.25bis Command Set DIAL STORED NUMBER Type: Immediate Format: CRSnn Description: Dials the number stored in memory location nn.