You can find the default modem password for you model:
| Model | Login | Username | Password |
|---|---|---|---|
| 5660 | TELNET | n/a | adminttd |
| 5861 SMT ROUTER | MULTI | admin | admin |
| 5871 IDSL ROUTER | MULTI | admin | admin |
| ROUTER 250 SSR250 | MULTI | admin | admin |
| DSL | MULTI | admin | admin |
| 5667 Rev. R4.0.1 | HTTP | (none) | admin |