USB Modem installed on /dev/ttySL0 but my modem is at /dev/ttyACM0

[Juan]

I tailed /var/log/kern.log and see ttyACM0 when I plug in the USB.
/etc/init.d/sl-modem-daemon sais
ln -sf ttySL0 /dev/modem

I changed to
ln -sf ttyACM0 /dev/modem

and now works.

Please take a look at that script to improve the modem detection

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: sl-modem-daemon 2.9.11~20110321-6
ProcVersionSignature: Ubuntu 3.2.0-56.86-generic-pae 3.2.51
Uname: Linux 3.2.0-56-generic-pae i686
NonfreeKernelModules: slamr wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: case 2055 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfbc00000 irq 48'
   Mixer name : 'Intel IbexPeak HDMI'
   Components : 'HDA:111d7605,10280441,00100104 HDA:80862804,80860101,00100000'
   Controls : 23
   Simple ctrls : 11
Date: Sat Nov 16 16:36:09 2013
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: sl-modem-source 2.9.11~20110321-6
SourcePackage: sl-modem
UpgradeStatus: No upgrade log present (probably fresh install)
WvDialConf: Error: command ['sed', '-e', '/^\\s*\\(Password\\|Username\\)/ d', '/etc/wvdial.conf'] failed with exit code 2: sed: can't read /etc/wvdial.conf: Permission denied
dmi.bios.date: 10/25/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A10
dmi.board.name: 0G2R51
dmi.board.vendor: Dell Inc.
dmi.board.version: A10
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A10
dmi.modalias: dmi:bvnDellInc.:bvrA10:bd10/25/2010:svnDellInc.:pnVostro3500:pvrA10:rvnDellInc.:rn0G2R51:rvrA10:cvnDellInc.:ct8:cvrA10:
dmi.product.name: Vostro 3500
dmi.product.version: A10
dmi.sys.vendor: Dell Inc.
modified.conffile..etc.init.d.sl.modem.daemon: [modified]
mtime.conffile..etc.init.d.sl.modem.daemon: 2013-11-16T16:04:11.165469

[أحمد المحمودي (Ahmed El-Mahmoudy) (aelmahmoudy)]

lsusb says this is a Conexant modem, which as far as I know is not supported by slmodem.

Rather it is supported by drivers provided by linuxant: http://www.linuxant.com/drivers/