2400 BPS Internal Modem (250-1034)   Specifications    Faxback Doc. # 5056

COMPATIBILITY:                       RECEIVER SENSITIVITY: -41 dBm nominal
        MODEM: Hayes V-series and          TRANSMIT LEVEL: -10 dBm nominal
               CCITT V.42/V.22 BIS        TONE DIAL LEVEL: -2 dBm nominal
               V.22, Bell 103, 212.        LINE IMPEDANCE: 600 ohms nominal
       DIALER: Extended "AT" command   RINGER EQUIVALENCE: 0.7 B
               set.                            MODULATION:
   DATA RATES: 2400, 1200, 300 bps.              300 BAUD: Frequency Shift
 SPEED SELECT: 0-300,1200,2400,4800,                       Keyed (FSK)
               and 9600 bps.                    1200 BAUD: Differential Phase
   CMD BUFFER: 255 characters.                             Shift Keyed (DPSK)
      SPEAKER: On (off by command).             2400 BAUD: 16-point quadrature
 DATA FORMATS: 8 bit, no parity; 7 bit                     amplitude modula-
               even, odd or no parity.                     tion/Phase-shift
TESTING MODES: Local/Remote digital                        Keyed (QAM/PSK)
               loopback.                          DIALING: Pulse (10 pps)
    OPERATION: Full Duplex at 2400 bps                     Tone (Including *,
               and below.                                  #,A,B,C,D duration
ERROR-CONTROL: Hayes V-series (LAPB) and                   95 ms (adjustable)
               CCITT V.42 compliant (LAPM
               and Alternate protocol) at
               1200 and 2400 bps.



(smm 07/29/93)