CMN-C8H/V.24, CMN-C8H/V.35, CMN-C8H/X.21, CMN-C8H/530 modem/telephone/ISDN Settings and Configuration

Card Type	Modem (synchronous/asynchronous)
Chipset	Unidentified
Data Rate	56Kbps/64Kbps
Data Modulation	Unidentified
Data Bus	Serial

CONNECTIONS
Function	Label	Function	Label
V.24, V.35, X.21, or RS-530 serial port via DB-25 connector	CN1	Unidentified	CN3
Telephone line out	CN2	Loopback test switch	SW6
Note: Standard V.35 or X.21 connector is provided on an included adapter cable.

USER CONFIGURABLE SETTINGS
Setting	Label	Position
í Line speed set to 64Kbps	SW1/4	Off
Line speed set to 56Kbps	SW1/4	On
í Stop bit shortening for asynchronous mode set to 25%	SW1/5	Off
Stop bit shortening for asynchronous mode set to 12.5%	SW1/5	On
í DCD forced high	SW2/2	On
DCD follows RTS	SW2/2	Off
í Pin 18 of CN1 has no function	SW2/3	Off
Pin 18 of CN1 begins local analog loopback test	SW2/3	On
í Pin 21 of CN1 has no function	SW2/4	Off
Pin 21 of CN1 begins remote digital loopback test	SW2/4	On

CLOCK SOURCE SELECTION
Setting	SW1/1	SW1/2	SW1/3
í Internal clock source	Off	Off	Off
External clock source	On	Off	Off
Received clock source	Off	Off	On
Asynchronous mode	Off	On	Off

DATA LENGTH SELECTION
Setting	SW1/6	SW2/1
8 bits	Off	Off
9 bits	Off	On
í 10 bits	On	Off
11 bits	On	On

SERIAL PORT CONFIGURATION
Setting	SW3	SW4	SW5
í DCE	On	On	On
DTE	Off	Off	Off

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
PWR	Green	On	Power is on
PWR	Green	Off	Power is off
XMT	Yellow	On	Modem is transmitting data
XMT	Yellow	Off	Modem is not transmitting data
RCV	Yellow	On	Modem is receiving data
RCV	Yellow	Off	Modem is not receiving data
DCD	Yellow	On	Carrier signal detected
DCD	Yellow	Off	Carrier signal not detected
TST	Red	On	Modem is in test mode
TST	Red	Off	Modem is not in test mode

MISCELLANEOUS TECHNICAL NOTE

This card is intended for use in the CMN-16 rack-mount system. The bus is used only for supplying power for the card. All other card functions are accessed through the serial port.