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Old 04-23-2005, 04:00 AM   #1
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dial-up connection

hi guy`s ..

i face a big problem with my modem .

my modem is : US.Robotics fax modem 56kb and i connect it with Serial Port and i try dial-up connection but it`s failed .

i open the kppp and enter the information for my account and i press connect

and when i wait for a moment this message appear
the pppd daemon died unexpectedly
Exit status : 16

and this is the Login Script Debug



i am using FC3

and very sorry for my very bad English

hope someone help
Old 04-23-2005, 09:38 AM   #2
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US.Robotics fax modem 56kb modem is not fully supported. More info at
Or try searching google for US Robotics modem linux
Old 04-23-2005, 09:50 AM   #3
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1) Run the "scanmodem" tool from the website to find the exact chipset.

2) It will tell you exact chipset your modem has and then will make suggestions about the drivers.

Good Luck

Last edited by ksgill; 04-23-2005 at 10:13 AM.
Old 04-23-2005, 11:54 AM   #4
Registered: Jan 2005
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I have the same problem with a USR external modem. It was recommended as a good "Linux" modem (I have tried it with Mandrake 10.1, Fedora Core 2&3, Debian 3.0, and Knoppix) and it wasn't. I bought a Best Data 56K and it has seemed to cure my problem. I have Googled and forumed to death on the answer for my USR to no avail. I am still looking for the answer as I have the USR on one of my Debian boxes and still try if from time to time in hopes of finding the cure. If all else fails and I am lucky they will get DSL into my rural area soon. Good Luck.
Old 04-23-2005, 12:19 PM   #5
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ammm , so the problem is in the modem !
that`s what i think ..

but the big problem is that all poeple say`s that
usr external modem with serial port is the best to use it in ur linux box .. and that`s un-true

i really try to do all the solution to fix this problem but nothing happenS

Last edited by vstealerv; 04-23-2005 at 12:27 PM.
Old 04-23-2005, 05:40 PM   #6
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i try both kppp and wvdial but without results !!

and this is how i create a connection :

first /

[root@localhost ~]# wvdialconf /etc/wvdial.conf
Scanning your serial ports for a modem.

Port Scan<*1>: Scanning ttyS3 first, /dev/modem is a link to it.
ttyS3<*1>: ATQ0 V1 E1 -- OK
ttyS3<*1>: ATQ0 V1 E1 Z -- OK
ttyS3<*1>: ATQ0 V1 E1 S0=0 -- OK
ttyS3<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK
ttyS3<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyS3<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
ttyS3<*1>: Modem Identifier: ATI -- 5601
ttyS3<*1>: Speed 4800: AT -- OK
ttyS3<*1>: Speed 9600: AT -- OK
ttyS3<*1>: Speed 19200: AT -- OK
ttyS3<*1>: Speed 38400: AT -- OK
ttyS3<*1>: Speed 57600: AT -- OK
ttyS3<*1>: Speed 115200: AT -- OK
ttyS3<*1>: Max speed is 115200; that should be safe.
ttyS3<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
Port Scan<*1>: S1
ttyS2<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyS2<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud
ttyS2<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.
Port Scan<*1>: S4   S5   S6   S7

Found a modem on /dev/ttyS3, using link /dev/modem in config.
Modem configuration written to /etc/wvdial.conf.
ttyS3<Info>: Speed 115200; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0"
----- second i enter my account information as shown here

i enter here
vi /etc/wvdial.conf

then i edit the information

Modem = /dev/ttyS3
Baud = 115200
SetVolume = 0
Dial Command = ATDT
Init1 = ATZ
Init3 = ATM0
FlowControl = CRTSCTS

[Dialer Defaults]
Modem = /dev/modem
Baud = 115200
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ISDN = 0
Modem Type = Analog Modem
Phone = *******
Username = ******
Password = *****
after that i try to connect with typing wvdial

and this is the logs

[root@localhost ~]# wvdial
--> WvDial: Internet dialer version 1.54.0
--> Initializing modem.
--> Sending: ATZ
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
--> Modem initialized.
--> Sending: ATDT3606060
--> Waiting for carrier.
--> Carrier detected.  Waiting for prompt.
CVX Access Switch.
Access is restricted to authorized users only.
--> Looks like a login prompt.
--> Sending: sub-0
--> Looks like a password prompt.
--> Sending: (password)
Exiting shell, and starting PPP session.
~[7f]}#@!}!}!} }<}!}$}%\}"}&} }*} } }%}&}+we$}'}"}(}"}1}$}%b^}4~
--> PPP negotiation detected.
--> Starting pppd at Sun Apr 24 01:27:07 2005
--> pid of pppd: 3861
--> Using interface ppp0
--> pppd: ATDT
--> pppd: ATDT
--> pppd: ATDT
--> pppd: ATDT
--> pppd: ATDT
--> Disconnecting at Sun Apr 24 01:27:45 2005
--> The PPP daemon has died: A modem hung up the phone (exit code = 16)
--> man pppd explains pppd error codes in more detail.
--> Try again and look into /var/log/messages and the wvdial and pppd man pages for more information.
why the connection is disconnecting ??
Old 04-24-2005, 04:44 AM   #7
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Old 04-24-2005, 06:19 AM   #8
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Hello vstealerv,

Try in KPPP to change the INIT string, you can Google for you INIT strings or maybe your modem is on this page

US Robotics not always works with standard INIT string's.

You can forget some of the postings here, there are no Serial RS-232 Windows soft-modems, also you not have to know which chipset your US Robotics is US Robotics.

Last edited by Dummy-in-Linux; 04-24-2005 at 06:25 AM.
Old 04-26-2005, 09:38 AM   #9
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of i`ll buy a new modem what do u suggest ?

alcatel - speed touch
or wut ??
Old 04-28-2005, 03:10 AM   #10
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Old 04-29-2005, 06:22 AM   #11
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Old 04-29-2005, 09:01 AM   #12
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This may help:

Old 04-29-2005, 07:03 PM   #13
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dial-up connection

I am using a US Robotics/3Com 56k FaxModem Model 5610 and it works with Mandrake 10.1 and Vector linux. But I also have a US Robotics 56K Fax Modem that is a winmodem and it won't work with linux. So if your modem doesn't have the controller on it, like the man said, you will need to get another one.


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