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NAME

umsm — Qualcomm MSM modem device

SYNOPSIS

umsm* at uhub?
ucom* at umsm?

DESCRIPTION

The umsm driver supports Qualcomm MSM modem adapters. The MSM chipset is found in EVDO, UMTS and LTE capable modems. Typically these are CardBus and PCI Express Mini Cards that incorporate a USB controller with the actual device attached to it.

The following devices are known to work with the umsm driver:

Devices suspected of being compatible are:

Some modems have multiple serial ports, however almost all modems have only one effective serial port for PPP connections. For example, the Huawei E220 has two serial ports, but only the first port can be used to make connections; the second one is for management. The Option GlobeTrotter HSDPA/HSUPA modems have three serial ports, but only the last port can be used to make PPP connections. The Medion Mobile S4222 has four serial ports, but only the first port can be used to make connections.

Some modems require multi-link PPP operation. For example, the Huawei E1550 has four serial ports. When initiating a connection, the control commands have to be issued on the third port, and after that the actual PPP connection comes up on the first port. The function of the second and fourth ports is unknown.

EXAMPLES

An example demand dial configuration for Cingular Wireless using pppd(8):

/etc/ppp/cingular-chat:

TIMEOUT 10
REPORT CONNECT
ABORT BUSY
ABORT 'NO CARRIER'
ABORT ERROR
'' ATZ OK AT&F OK
AT+CGDCONT=1,"IP","isp.cingular" OK
ATD*99***1# CONNECT

/etc/ppp/peers/ac875:

cuaU0
115200
debug
noauth
nocrtscts
:10.254.254.1
ipcp-accept-remote
defaultroute
user isp@cingulargprs.com
demand
active-filter 'not udp port 123'
persist
idle 600
connect "/usr/sbin/chat -v -f /etc/ppp/cingular-chat"

/etc/ppp/chap-secrets:

# Secrets for authentication using CHAP
# client		server	secret		IP addresses
isp@cingulargprs.com	*	CINGULAR1

pppd(8) is then started using:

SEE ALSO

ucom(4), uhub(4), usb(4), pppd(8)

HISTORY

The umsm device driver first appeared in OpenBSD 4.0.

AUTHORS

The umsm driver was written by Jonathan Gray <jsg@openbsd.org> and Yojiro UO <yuo@nui.org>.

CAVEATS

For Verizon Wireless (and possibly other services), cards require a one-time activation before they will work; umsm does not currently support this.

The additional IEEE 802.11 wireless chipset found in the Option GlobeTrotter GT FUSION is not yet supported.