Yes. If your ISP is not V.92 compatible, the modem will connect at V.90 mode. Otherwise it will fall back to a V.34 rate, 33,600 bps or lower.
If your ISP is not V.92 compatible and you are having trouble establishing or maintaining a connection, we recommend adding S7=150+MS=V90 to the dialing program's extra settings or modem initialization string. S7=150 will extend the negotiation to 150 seconds (if needed), and +MS=V90 will disable V.92 and force V.90 mode. Note that "1" is one and "0" is zero.
If you are using:
- Dial-Up Networking for Windows 98/Me - Go to Control Panel | Modems and click Properties, then Connection, then Advanced. Enter S7=150+MS=V90 in the Extra Settings text field and click OK.
- Dial-Up Networking for Windows 2000/XP - Go to Control Panel | Phone and Modem Options, click the Modem tab, double-click Properties, and click the Advanced tab. Enter S7=150+MS=V90 in the Extra Settings text field, and click OK.
- America Online v4.0-7.0 or CompuServe 2000 - At the sign on screen, click Setup and then Expert Setup. In the resulting Communications Setup screen, click the "Devices (modems, etc.)" tab. Highlight the Zoom modem and click Edit. In the resulting Expert Edit Modem screen, click Edit Commands and then enter S7=150+MS=V90 before the ^M in the Setup Modem String (e.g., AT&F&C1&D2S95=1S7=150+MS=V90^M). Click OK to save the modified string.
If you are still unable to establish or maintain a connection, use +MS=V34 instead of +MS=V90. This command will disable 56K (V.90/V.92) and force V.34 mode, which is more reliable for less-than-optimal phone lines.
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