I followed SierraWireless instructions and got this:

# pppd call ac750
send (AT^M^M)
expect (OK)
<getting jammed here>

my ac750:6
-detach
/dev/modem
57600
debug
defaultroute
usepeerdns
user ''
show-password
crtscts
lock
connect '/usr/sbin/chat -e -V -v -s -t480 -f /etc/ppp/peers/ac750chat'

my ac750chat:
'' AT
OK ATZ
OK AT+cgdcont=1,"IP","internet"
OK "ATD*99#" TIMEOUT 480
\~ ''

Laptop is Asus A4B00K and card is Sierra Wireless Aircard 750 GPRS,
Slackware 10.1 , non-modified kernel. Anyone gone this path through
to light?

you should be dialing #777, or 777#, I don't remember which off the top of my head. I'm assuming this is for the verizon network, but the sprint network should behave the same.

Also, I'm assuming that you've already activated the card at a reseller, and enabled it for the network using a windows machine. If you haven't done these things, it won't connect.

It would also be much more helpful if you posted the pppd output, dmesg output, and lsmod output.

This reply comes from the same AirCard (using Windows).
Network operator is Orange, if you mean that.

Found this in /var/log/messages :
Aug 12 20:45:58 darkstar kernel: Linux Kernel Card Services 3.1.22
Aug 12 20:45:58 darkstar kernel: options: [pci] [cardbus] [pm]
Aug 12 20:45:58 darkstar kernel: isapnp: Scanning for PnP cards...
Aug 12 20:45:58 darkstar kernel: isapnp: No Plug & Play device found
Aug 12 20:45:58 darkstar kernel: Intel ISA PCIC probe: not found.
Aug 12 20:45:58 darkstar kernel: Databook TCIC-2 PCMCIA probe: not found.
Aug 12 20:45:59 darkstar kernel: Yenta ISA IRQ mask 0x0088, PCI irq 0
Aug 12 20:45:59 darkstar kernel: Socket status: 30000410
Aug 12 20:46:00 darkstar cardmgr[74]: watching 1 socket
Aug 12 20:46:00 darkstar kernel: cs: IO port probe 0x0c00-0x0cff: clean.
Aug 12 20:46:00 darkstar kernel: cs: IO port probe 0x0820-0x08ff: clean.
Aug 12 20:46:00 darkstar kernel: cs: IO port probe 0x0800-0x080f: clean.
Aug 12 20:46:00 darkstar kernel: cs: IO port probe 0x03e0-0x04ff: excluding 0x4d0-0x4d7
Aug 12 20:46:00 darkstar kernel: cs: IO port probe 0x0100-0x03af: excluding 0x378-0x37f
Aug 12 20:46:00 darkstar kernel: cs: IO port probe 0x0a00-0x0aff: excluding 0xa00-0xa0f
Aug 12 20:46:00 darkstar kernel: cs: memory probe 0xa0000000-0xa0ffffff: excluding 0xa0000000-0xa0ffffff
Aug 12 20:46:00 darkstar kernel: cs: memory probe 0x60000000-0x60ffffff: excluding 0x60000000-0x60ffffff
Aug 12 20:46:00 darkstar kernel: cs: warning: no high memory space available!
Aug 12 20:46:00 darkstar kernel: cs: memory probe 0x0d0000-0x0dffff: excluding 0xd0000-0xdffff
Aug 12 20:46:00 darkstar kernel: cs: memory probe 0x0e0000-0x0effff: excluding 0xe0000-0xeffff
Aug 12 20:46:00 darkstar kernel: cs: memory probe 0x0c0000-0x0cffff: excluding 0xc0000-0xcffff
Aug 12 20:46:00 darkstar kernel: cs: memory probe 0x0f0000-0x0fffff: excluding 0xf0000-0xfffff
Aug 12 20:46:00 darkstar kernel: cs: unable to map card memory!
Aug 12 20:46:00 darkstar kernel: cs: unable to map card memory!
Aug 12 20:46:00 darkstar cardmgr[75]: socket 0: Anonymous Memory
Aug 12 20:46:00 darkstar kernel: cs: unable to map card memory!
Aug 12 20:46:00 darkstar last message repeated 3 times
Aug 12 20:46:00 darkstar cardmgr[75]: executing: 'modprobe memory_cs 2>&1'
Aug 12 20:46:00 darkstar cardmgr[75]: + modprobe: Can't locate module memory_cs
Aug 12 20:46:00 darkstar cardmgr[75]: modprobe exited with status 255
Aug 12 20:46:00 darkstar cardmgr[75]: module /lib/modules/2.4.29/pcmcia/memory_cs.o not available

what is the output of lspci -vv ?

also of cat /proc/bus/usb/devices

thanks,
aaron

Moved: This thread is more suitable in Wireless Forum and has been moved accordingly to help your thread/question get the exposure it deserves.

Is this it?
02:01.3 System peripheral: Ricoh Co Ltd: Unknown device 0592 (rev 08)
Subsystem: Asustek Computer, Inc.: Unknown device 1987
Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin C routed to IRQ 10
Region 0: Memory at feaffc00 (32-bit, non-prefetchable) [size=256]
Capabilities: [80] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=2 PME-