Appendix B
LEDs
LEDs
The Express XRT front panel contains five LEDs associated with the DTE port and the ISDN interface as shown in Figure
TD | RD | B1 | B2 | PWR |
Express XRT |
| TEST |
| LINE |
|
| Figure |
|
| Front Panel LEDs |
|
| Table |
|
| Express XRT LEDs |
|
|
|
LED | Color | Description |
|
|
|
B1 or B2 | Slow Green Flash | Attempting SPID registration. |
| Fast Green Flash | Attempting TEI registration. |
| Off | Ready. No data traffic. |
| Solid Green | B Channel passing data (in use). |
| Solid Amber | Loopback protocol test (one or both |
|
| channels). |
| Amber Flash | Remote test originate. |
|
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Express XRT User Guide | 71 |