Qualcomm MSM modem device
umsm* at uhub?
ucom* at umsm?
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
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.
An example demand dial configuration for Cingular Wireless using pppd(8):
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
cuaU0 115200 debug noauth nocrtscts :10.254.254.1 ipcp-accept-remote defaultroute user email@example.com demand active-filter 'not udp port 123' persist idle 600 connect "/usr/sbin/chat -v -f /etc/ppp/cingular-chat"
# Secrets for authentication using CHAP # client server secret IP addresses firstname.lastname@example.org * CINGULAR1
pppd(8) is then started using:
# pppd call ac875
ucom(4), uhub(4), usb(4), pppd(8)
umsm device driver first appeared in
umsm driver was written by
For Verizon Wireless (and possibly other services), cards require
a one-time activation before they will work;
does not currently support this.
The additional IEEE 802.11 wireless chipset found in the Option GlobeTrotter GT FUSION is not yet supported.