212A modem/telephone/ISDN Settings and Configuration

Card Type	Modem (synchronous/asynchronous)
Chip Set	Unidentified
Maximum Data Rate	1200bps
Data Bus	External
Data Modulation Protocol	Bell 212A

CONNECTIONS
Function	Label		Function		Label
Line out		CN1		AC power in		CN5
Line in		CN2		Talk/data switch		SW1
RS-232/422		CN3		300/1200bps switch		SW2
Unidentified		CN4

USER CONFIGURABLE SETTINGS
Setting	Label	Position
í Chassis ground connected to signal ground	JP1	Pins 2 & 3 closed
Chassis ground not connected to signal ground	JP1	Pins 1 & 2 closed
í Transmit level set to -9 (permissive)	JP2	Pins 1 & 2 closed
Transmit level set to programmable	JP2	Pins 2 & 3 closed
í Factory configured - do not alter	JP5	Pins 2 & 3 closed
í Modem operates in originate mode when forced to manual	S1/1	Off
Modem operates in answer mode when forced to manual	S1/1	On
í Modem auto-detects answer/originate mode	S1/2	Off
Manual answer/originate mode	S1/2	On
í Line will not be set busy during test modes	S1/3	Off
Line will be set busy during test modes	S1/3	On
í Disconnect after 150ms loss of carrier	S1/4	On
Disconnect after 18s loss of carrier	S1/4	Off
í Auto-answer enabled	S1/5	On
Auto-answer disabled	S1/5	Off
í Disconnect modem on low DTR	S1/6	On
Do not disconnect modem on low DTR	S1/6	Off
í Disconnect modem on receipt of a long space	S1/7	On
Do not disconnect modem on receipt of a long space	S1/7	Off
í Switched-line mode	S1/8	Off
Leased-line mode	S1/8	On
í DTR normal	S2/1	Off
DTR used for off/on hook in manual answer/originate	S2/1	On
í Factory configured - do not alter	S2/2	N/A
í Factory configured - do not alter	S2/3	N/A
í Factory configured - do not alter	S2/4	N/A
í Factory configured - do not alter	S2/5	N/A
í Factory configured - do not alter	S2/6	N/A
í DTR normal	S3/1	Off
DTR forced high	S3/1	On
í Pin 23 of RS-232 port ignored	S3/2	Off
Speed set to 1200bps when pin 23 of RS-232 port is high	S3/2	On
í Pin 12 of RS-232 port has no function	S3/3	Off
Pin 12 of RS-232 port high indicates speed set to 1200bps	S3/3	On
í Analog loopback test performed when pin 25 of RS-232 port is high	S3/4	On
Pin 25 of RS-232 port ignored	S3/4	Off

HANDSET POLARITY
Setting	JP3	JP4
í Normal	Pins 1 & 2 closed	Pins 1 & 2 closed
Reversed	Pins 2 & 3 closed	Pins 2 & 3 closed

DATA FORMAT
Setting	S2/7	S2/8
9-bit characters, async mode	Off	Off
10-bit characters, async mode	Off	On
í 11-bit characters, async mode	On	Off
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)
LED	Color	Status	Condition
MR/RI	Red	On	Power is on
MR/RI	Red	Off	Power is off
MR/RI	Red	Blinking	Phone is ringing
TR	Red	On	DTR signal is high
TR	Red	Off	DTR signal is low
HS	Red	On	Modem is operating at 1200bps
HS	Red	Off	Modem is operating at 300bps
RD	Red	On	Modem is receiving data
RD	Red	Off	Modem is not receiving data
TD	Red	On	Modem is transmitting data
TD	Red	Off	Modem is not transmitting data
TM	Red	On	Modem is in test mode
TM	Red	Off	Modem is not in test mode
Note: The functions of MC and LED1 are unidentified.