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ETU01/X21

CTC UNION TECHNOLOGIES CO., LTD.

ETU01/X21

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), 15-pin DTE port (X.21)

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

15-pin 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.