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.