ADTRAN
EXPRESS XRT
Card Type | ISDN TA |
Chip Set | Unidentified |
I/O Options | RJ-45 ISDN BRI U interface, Analog phone ports (2), 25-pin modem port, 25-pin DTE port, power |
ISDN Rate | 230.4Kbps |
ISDN Modulation Protocol | PPP |
Error Correction/Compression | Unidentified |
Data Bus | External |

CONNECTIONS | |||
Function | Label | Function | Label |
Power | CN1 | Telephone line 1 | CN4 |
25-pin DTE port | CN2 | Telephone line 2 | CN5 |
25-pin modem port | CN3 | ISDN BRI interface (RJ-45) | CN6 |
USER CONFIGURABLE SETTINGS | ||
Function | Label | Position |
î | SW1/1 | On |
230.4Kbps | SW1/1 | Off |
î | SW1/2 | On |
Returns to factory default profile | SW1/2 | Off |
î | SW1/3 | On |
Phone volume high | SW1/3 | Off |
î | SW1/4 | Unidentified |
DIAGNOSTIC LED(S) | |||
LED | Color | Status | Condition |
TD | Green | On | Modem is transmitting data |
TD | Green | Off | Modem is not transmitting data |
RD | Green | On | Modem is receiving data |
RD | Green | Off | Modem is not receiving data |
B1 | Green | On | B-channel 1 data call connected |
B1 | Amber | On | Loopback channel protocol test in progress on B-channel 1 |
B1 | Amber | Blinking | Remote test originate on B-channel 1 |
B1 | Green | Blinking (fast) | Attempting TEI registration on B-channel 1 |
B1 | Green | Blinking (slow) | Attempting SPID registration on B-channel 1 |
B1 | Green | Off | No activity on B-channel 1 |
B2 | Green | On | B-channel 2 data call connected |
B2 | Amber | On | Loopback channel protocol test in progress on B-channel 2 |
B2 | Amber | Blinking | Remote test originate on B-channel 2 |
B2 | Green | Blinking (fast) | Attempting TEI registration on B-channel 2 |
B2 | Green | Blinking (slow) | Attempting SPID registration on B-channel 2 |
B2 | Green | Off | No activity on B-channel 2 |
PWR | Green | On | Power is on; link is established |
PWR | Green | Blinking | Power is on; link is not established |
PWR | Green | Off | Power is off |
SUPPORTED COMMAND SET | |
Basic AT Commands | |
AT, ‘+++’, A/ | |
A, E, Q, V | |
&R, &S | |
Extended AT Commands | |
\Q | |
S Registers | |
S0, S2, S3, S4, S5, S7, S12, S25 | |
Note: See MHI Help File for full command documentation. |
Proprietary AT Command Set
For a full command summary see, ADRAN EXPRESS XR