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umodem - USB modem support
The umodem driver provides support for USB modems in the Communication
Device Class using the Abstract Control Model. These modems are
basically standard serial line modems, but they are accessed via USB
instead. They support a regular AT command set. The commands can either
be multiplexed with the data stream or handled through separate pipes.
In the latter case the AT commands have to be given on a device separate
from the data device.
The device is accessed through the ucom(4) driver which makes it behave
like a tty(4).
Devices supported by the umodem driver include:
· 3Com 5605
· Curitel PC5740 Wireless Modem
· Metricom Ricochet GS USB wireless modem
· Sierra MC5720 Wireless Modem
· Yamaha Broadband Wireless Router RTW65b
· ELSA MicroLink 56k USB modem
tty(4), ucom(4), usb(4)
The umodem driver appeared in NetBSD 1.5. This manual page was adopted
from NetBSD by Tom Rhodes 〈trhodes@FreeBSD.org〉 in April 2002.
Only modems with multiplexed commands and data are supported at the