You can find the default modem password for you model:
| Model | Login | Username | Password |
|---|---|---|---|
| HOMEPORTAL Rev. SBC YAHOO! DSL | 2Wire | ||
| ALL WIFI ROUTERS | HTTP | (none) | Wireless |
2Wire, Inc., was (between 1998 and 2010) a home networking Customer Premises Equipment (CPE) manufacturer that provided telecommunications companies with hardware, software, service platforms, and remote CPE management systems. The company was headquartered in San Jose, California, in the Silicon Valley. As of July 2010, the company employed approximately 1,600 employees globally, including 550 in R&D, sales and administration, 450 in customer care and 600 agency employees in five U.S. offices and an additional nine offices around the world. The 2Wire HomePortal residential gateways were distributed by broadband service providers such as AT&T, Embarq, windstream and Qwest in the United States, Bell in Canada, Telmex in Mexico, BT Group in the United Kingdom, Telstra in Australia and SingTel in Singapore. In July 2010, Pace plc of the United Kingdom agreed to buy 2Wire for $475m (£307m).
From Wikipedia