MOTOROLA, INC. 212A/D Card Type Modem (synchronous/asynchronous) Chip Set Unidentified Maximum Data Rate 1200bps Data Bus External Data Modulation Bell 212A Protocol [Image] CONNECTIONS Function Label Function Label Line out CN1 AC power in CN4 Line in CN2 Talk/data switch SW1 RS-232/422 CN3 300/1200bps switch SW2 USER CONFIGURABLE SETTINGS Setting Label Position Chassis ground connected to signal ground JP1 Pins 2 & 3 closed Chassis ground not connected to signal JP1 Pins 1 & 2 ground closed Transmit level set to -9 (permissive) JP2 Pins 2 & 3 closed Transmit level set to programmable JP2 Pins 1 & 2 closed Factory configured - do not alter S1/1 N/A Automatic Call Unit returns verbose S1/2 Off result codes Automatic Call Unit returns numeric S1/2 On result codes Automatic Call Unit enabled S1/7 On Automatic Call Unit disabled S1/7 Off XXXT escape sequence enabled S1/8 On XXXT escape sequence disabled S1/8 Off Modem operates in originate mode when S2/1 Off forced to manual Modem operates in answer mode when forced S2/1 On to manual Switched-line mode S2/2 Off Leased-line mode S2/2 On Disconnect modem on receipt of a long S2/3 On space Do not disconnect modem on receipt of a S2/3 Off long space Transmit long space on disconnect S2/4 On Do not transmit long space on disconnect S2/4 Off Auto-answer enabled S2/5 On Auto-answer disabled S2/5 Off Disconnect on loss of carrier S2/6 On Disconnect after 18s loss of carrier S2/6 Off Disconnect modem on low DTR S2/7 On Do not disconnect modem on low DTR S2/7 Off Line will not be set busy during test S2/8 Off modes Line will be set busy during test modes S2/8 On DTR normal S3/1 Off DTR forced high S3/1 On Pin 23 of RS-232 port ignored S3/2 Off Speed set to 1200bps when pin 23 of S3/2 On RS-232 port is high Pin 25 of RS-232 port ignored S3/3 Off Analog loopback test performed when pin S3/3 On 25 of RS-232 port is high Pin 12 of RS-232 port has no function S3/4 Off Pin 12 of RS-232 port high indicates S3/4 On speed set to 1200bps HANDSET POLARITY Setting JP3 JP4 Normal Pins 2 & 3 closed Pins 2 & 3 closed Reversed Pins 1 & 2 closed Pins 1 & 2 closed RECEIVED CD SIGNAL Setting S1/3 S1/4 Forced low Off Off Forced high Off On Low when idle On Off RESET TO FACTORY DEFAULTS Setting S1/3 S1/4 Normal operation See above table See above table Reset configuration On On DATA FORMAT Setting S1/5 S1/6 9-bit characters, async Off Off mode 10-bit characters, async Off On mode 11-bit characters, async On Off mode Synchronous mode On On CLOCK SOURCE Setting JP6/A JP6/B JP6/C Slave Open Open Closed Internal Open Closed Open External Closed Open Open DIAGNOSTIC LED(S) The functions of the LEDs are unidentified.