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TA+ X.21

STOLLMANN GMBH

TA+ X.21

Card Type

ISDN TA

Chip Set

Unidentified

Maximum Data Rate

64Kbps x 2

Data Bus

External

Data Modulation Protocol

V.110, 1TR6, DSS1, X.30

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

T

Red

On

TA is transmitting data

T

Red

Off

TA is not transmitting data

R

Red

On

TA is receiving data

R

Red

Off

TA is not receiving data

C

Red

On

DTR signal is high

C

Red

Off

DTR signal is low

I

Red

On

Carrier signal detected

I

Red

Off

Carrier signal not detected

L2 Status

L1 Status

Condition

On

On

TA is performing power-up tests or is connected

Blinking

Blinking

TA is resetting

Off

On

TA is ready

.25s on, .75s off

On

Call is in progress

.75s on, .25s off

On

Negotiation is in progress

1s on, 1s off

On

No ISDN signal detected

.5s on, .5s off

On

Remote TA busy

.3s on, .3s off

On

Remote TA did not answer

.25s on, .25s off

On

Could not connect to remote TA

Off

Off

Hardware error detected

Blinking

Off

Hardware error detected

Off

.25s on, .75s off

ISDN has failed

Proprietary Command Sets

See document V1973 for a full command summary.