Card Type	E1 DSU
Chip Set	Unidentified
I/O Options	AC power, E1 network interface via BNC connectors (2), E1 network interface via 15-pin connector, E1 network interface via bantam connectors (2), 34-pin DTE port (V.35)
Wiring Type	RG-58A/U cable
E1 Transfer Rate	2.048Mbps
E1 Line Coding	AMI, HDB3
Frame type	CCS, CAS, CRC4
Data Bus	External

CONNECTIONS
Function	Label	Function	Label
AC power	CN1	BNC connector - receive	CN5
Bantam jack - receive	CN2	BNC connector - transmit	CN6
Bantam jack - transmit	CN3	15 pin-network port	CN7
V.35 DTE port	CN4	Power switch	SW8
Note: RS-449 interface is possible via 37-pin connector on adapter cable

USER CONFIGURABLE SETTINGS
Setting		Label	Position
»	Framed mode (2048Kbps)	SW1/1	On
	Unframed mode(64Kbps x n )	SW1/1	Off
»	Time slot 1 enabled	SW1/2	On
	Time slot 1 disabled	SW1/2	Off
»	Time slot 2 enabled	SW1/3	On
	Time slot 2 disabled	SW1/3	Off
»	Time slot 3 enabled	SW1/4	On
	Time slot 3 disabled	SW1/4	Off
»	Time slot 4 enabled	SW1/5	On
	Time slot 4 disabled	SW1/5	Off
»	Time slot 5 disabled	SW1/6	Off
	Time slot 5 enabled	SW1/6	On
»	Time slot 6 disabled	SW1/7	Off
	Time slot 6 enabled	SW1/7	On
»	Time slot 7 disabled	SW1/8	Off
	Time slot 7 enabled	SW1/8	On

USER CONFIGURABLE SETTINGS (CONT.)
» Time slot 8 disabled		SW2/1	Off
	Time slot 8 enabled	SW2/1	On
»	Time slot 9 disabled	SW2/2	Off
	Time slot 9 enabled	SW2/2	On
»	Time slot 10 disabled	SW2/3	Off
	Time slot 10 enabled	SW2/3	On
»	Time slot 11 disabled	SW2/4	Off
	Time slot 11 enabled	SW2/4	On
»	Time slot 12 disabled	SW2/5	Off
	Time slot 12 enabled	SW2/5	On
»	Time slot 13 disabled	SW2/6	Off
	Time slot 13 enabled	SW2/6	On
»	Time slot 14 disabled	SW2/7	Off
	Time slot 14 enabled	SW2/7	On
»	Time slot 15 disabled	SW2/8	Off
	Time slot 15 enabled	SW2/8	On
»	Time slot 16 disabled	SW3/1	Off
	Time slot 16 enabled	SW3/1	On
»	Time slot 17 disabled	SW3/2	Off
	Time slot 17 enabled	SW3/2	On
»	Time slot 18 disabled	SW3/3	Off
	Time slot 18 enabled	SW3/3	On
»	Time slot 19 disabled	SW3/4	Off
	Time slot 19 enabled	SW3/4	On
»	Time slot 20 disabled	SW3/5	Off
	Time slot 20 enabled	SW3/5	On
»	Time slot 21 disabled	SW3/6	Off
	Time slot 21 enabled	SW3/6	On
»	Time slot 22 disabled	SW3/7	Off
	Time slot 22 enabled	SW3/7	On
»	Time slot 23 disabled	SW3/8	Off
	Time slot 23 enabled	SW3/8	On
»	Time slot 24 disabled	SW4/1	Off
	Time slot 24 enabled	SW4/1	On
»	Time slot 25 disabled	SW4/2	Off
	Time slot 25 enabled	SW4/2	On
»	Time slot 26 disabled	SW4/3	Off
	Time slot 26 enabled	SW4/3	On
»	Time slot 27 disabled	SW4/4	Off
	Time slot 27 enabled	SW4/4	On
»	Time slot 28 disabled	SW4/5	Off
	Time slot 28 enabled	SW4/5	On
»	Time slot 29 disabled	SW4/6	Off
	Time slot 29 enabled	SW4/6	On
»	Time slot 30 disabled	SW4/7	Off
	Time slot 30 enabled	SW4/7	On
»	Time slot 31 disabled	SW4/8	Off
	Time slot 31 enabled	SW4/8	On

USER CONFIGURABLE SETTINGS (CONT.)
» HDB3 line code enabled		SW5/4	Off
	AMI line code enabled	SW5/4	On
»	CAS/PCM31 frame mode enabled	SW5/5	Off
	CAS/PCM30 frame mode enabled	SW5/5	On
»	CRC4 diabled	SW5/6	Off
	CRC4 enabled	SW5/6	On
»	Unused timslot - Flag (0x7E)	SW5/7	Off
	Unused timeslot - Mark (0xFF)	SW5/7	On
»	64Kbps x n data rate enabled	SW5/8	Off
	56Kbps x n data rate enabled	SW5/8	On
»	Jitter attenuator enabled	SW6/1	On
	Jitter attenuator disabled	SW6/1	Off
»	Jitter on received side	SW6/2	Off
	Jitter on transmitted side	SW6/2	On
»	Jitter buffer depth set at 32 bits	SW6/3	Off
	Jitter buffer depth set at 128 bits	SW6/3	On
»	Cascading function disabled	SW6/4	Off
	Cascading function enabled	SW6/4	On
»	Passthrough disabled on time slot 16	SW6/5	Off
	Passthrough enabled on time slot 16	SW6/5	On
»	Factory configured - do not alter	SW6/6	Unidentified
»	Data port loopback disabled	SW6/7	Off
	Data port loopback enabled	SW6/7	On
»	Front panel loopback enabled	SW6/8	On
	Front panel loopback disabled	SW6/8	Off

CLOCK MODE
Mode #		E1 Transmit	Data Port Receive	Data Port Transmit	SW5/1	SW5/2	SW5/3
»	0 (DCE1)	Recover	Recover	Recover	Off	Off	Off
	1 (DCE2)	Internal	Internal	Internal	On	Off	Off
	2 (DTE1)	External	Recover	External	Off	On	Off
	3 (DTE2)	External	External	External	On	On	Off
	4 (DTE2)	External	External	External	Off	Off	On

E1 LINE IMPEDANCE
Setting		SW7/1	SW7/2	SW7/3	SW7/4	SW7/5
»	75 Ohm operation	Off	Off	Off	Off	Off
	120 Ohm operation	On	On	On	On	On

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
PWR	Green	On	Power is on
PWR	Green	Off	Power is off
TD	Yellow	On	Data is being transmitted from the data port (CN4)
TD	Yellow	Blinking	Space is being transmitted from the data port (CN4)
TD	Yellow	Off	Data is not being transmitted from the data port (CN4)
RD	Yellow	On	Data is being received at the data port (CN4)
RD	Yellow	Blinking	Space is being received at the data port (CN4)
RD	Yellow	Off	Data is not being recieved at the data port (CN4)
RTS	Yellow	On	Sending device is enabled
RTS	Yellow	Off	Sending device is disabled
DCD	Yellow	On	Data carrier present
DCD	Yellow	Off	Data carrier not present. Connection not established
CKLS	Red	On	Transmit clock loss detected
CKLS	Red	Off	Transmit clock loss not detected
SGLS	Red	On	Receive signal loss detected
SGLS	Red	Off	Receive signal loss not detected
SCLS	Red	On	Loss of received frame syncronization detected
SCLS	Red	Off	Loss of received frame syncronization not detected
ALM	Red	On	Alarm condition detected on network
ALM	Red	Off	Alarm condition not detected on network
ER	Red	On	Bit errors detected in the 511 test pattern
ER	Red	Off	Bits errors not detected in 511 test pattern
TST	Red	On	Device is conducting a loopback or pattern test
TST	Red	Off	Device is not conducting a loopback or pattern test

MISCELLANEOUS TECHNICAL NOTES

Timeslot switches are ignored in unframe mode. In framed mode, clock rate is determined by the number of timeslots enabled ( n ). In CAS mode, SW3/1 must be set to off position or a loopback test will occur. Cascading units must not be assigned identical or overlapping timeslots.