You can find the default modem password for you model:
| Model | Login | Username | Password |
|---|---|---|---|
| MX2800 | TELNET | n/a | adtran |
| SMART 16/16E | TELNET | n/a | (none) |
| ATLAS 800/800PLUS/810PLUS/550 | TELNET | n/a | Password |
| SMART 16/16E | TELNET | n/a | PASSWORD |
| NXIQ | TELNET | n/a | adtran |
| TSU IQ/DSU IQ | TELNET | n/a | (none) |
| EXPRESS 5110/5200/5210 | TELNET | n/a | adtran |
| AGENT CARD | TELNET | n/a | ADTRAN |
| TSU ROUTER MODULE/L128/L768/1.5 | TELNET | n/a | (none) |
| T3SU 300 | TELNET | n/a | adtran |