Connecting the HUAWEI E1550 broadband modem using WvDial and PPPD

This document is copyright Jeddy Azuriey, It may be copied freely as a whole for non-commercial purpose, but must retain the indication of authorship. If you want to include it in a collection for sale, please contact the author. Furthermore, any alterations must have the permission of the author.

  1. Insert HUAWEI E1550 modem into USB slot. Wait for seconds to make sure kernel detect the hardware. Then, run command dmesg. Make sure last lines contains information that the modem is discovered.
    2. ...
USB Serial support registered for GSM modem (1-port)
option 1-1:1.0 GSM modem (1-port) converter detected
usb 1-1: GSM modem (1-port) converter now attahed to ttyUSB0
option 1-1:1.1 GSM modem (1-port) converter detected
usb 1-1: GSM modem (1-port) converter now attahed to ttyUSB1
option 1-1:1.2 GSM modem (1-port) converter detected
usb 1-1: GSM modem (1-port) converter now attahed to ttyUSB2
option 1-1:1.3 GSM modem (1-port) converter detected
usb 1-1: GSM modem (1-port) converter now attahed to ttyUSB3
usbcore: registered new interface driver option
option: v0.7.2:USB Driver for GSM modems
usb-storage: device scan complete
usb-storage: device scan complete
scsi 10:0:0:0 CDROM		HUAWEI	Mass Storage	2.31 PQ: 0 ANSI: 2
scsi 11:0:0:0 Direct Access	HUAWEI	MMC Storage	2.31 PQ: 0 ANSI: 2
sr1: scsi-1 drive
sr 10:0:0:0: Attached scsi CD-ROM sr1
sr 10:0:0:0: Attached scsi generic sg2 type 5
sr 11:0:0:0: Attached scsi generic sg3 type 0
sr 11:0:0:0: [sdb] Attached SCSI removable disk
[jedi@localhost !]$
  2. For the first time, create wvdial configuration file.
    3. [jedi@localhost !]$ wvdialconf /etc/wvdial.conf
Editing `/etc/wvdial.conf'

Modem Port Scan<*1>: S0 S1 S2 S3
WvModem<*1>: Cannot get information for serial port.
ttyUSB0<*1>: ATQ0 V1 E1 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 Z -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
ttyUSB0<*1>: Modem Identifier: ATI -- Manufacturer: huawei
ttyUSB0<*1>: Speed 9600: AT -- OK
ttyUSB0<*1>: Max speed is 9600; that should be safe.
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK

WvModem<*1>: Cannot get information for serial port.
ttyUSB1<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyUSB1<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 9600 baud
ttyUSB1<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.

WvModem<*1>: Cannot get information for serial port.
ttyUSB2<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyUSB2<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 9600 baud
ttyUSB2<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.

WvModem<*1>: Cannot get information for serial port.
ttyUSB3<*1>: ATQ0 V1 E1 -- OK
ttyUSB3<*1>: ATQ0 V1 E1 Z -- OK
ttyUSB3<*1>: ATQ0 V1 E1 S0=0 -- OK
ttyUSB3<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK
ttyUSB3<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyUSB3<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
ttyUSB3<*1>: Modem Identifier: ATI -- Manufacturer: huawei
ttyUSB3<*1>: Speed 9600: AT -- OK
ttyUSB3<*1>: Max speed is 9600; that should be safe.
ttyUSB3<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK

Found a modem on /dev/ttyUSB0
Modem configuration written to /etc/wvdial.conf
ttyUSB0: Speed 9600; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0"
ttyUSB3: Speed 9600; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0"
  3. Edit the configuration file
    4. [jedi@localhost !]$ vim /etc/wvdial.conf
[Dialer Defaults]
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Modem Type = Analog Modem\ISDN = 0
Phone = *99#
Modem = /dev/ttyUSB0
Username = azuraidi
Password = 0193347603
Baud = 9600
  4. Run the dialer.
    5. [jedi@localhost !]$ wvdial
--> WvDial: Internet dialer version 1.60
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Modem initialized
--> Sending: ATDT*99#
--> Waiting for carrier
ATDT*99#
CONNECT
--> Carrier detected. Waiting for prompt.
--> Don't know what to do! Starting pppd and hoping for the best.
--> Starting pppd at Fri Dec 17 21:00:26 2010
--> Pid of pppd: 2187
--> Using interface ppp0
--> pppd: Ox Ox
--> pppd: Ox Ox
--> pppd: Ox Ox
--> pppd: Ox Ox
--> pppd: Ox Ox
--> local IP address 10:163:74:110
--> pppd: Ox Ox
--> remote IP address 10:64:64:64
--> pppd: Ox Ox
--> primary DNS address 203:82:64:145
--> pppd: Ox Ox
--> secondary IP address 203:82:64:129
--> pppd: Ox Ox
  5. Any time after connecting, WvDial will start PPP if it sees a PPP sequence from the server, or, alternatively, tries to start PPP. If all of this fails, WvDial just runs pppd and hopes for the best. From the command results, WvDial has failed to receive messages from the peer.
  6. By looking at kernel messages, we knew that the connection is established.
    7. [jedi@localhost ~]$ tail -f /var/log/messages

Dec 17 21:00:26 localhost pppd[2187]: pppd 2.4.4 astarted by root, uid 0
Dec 17 21:00:26 localhost pppd[2187]: Using interface ppp0
Dec 17 21:00:26 localhost pppd[2187]: Connect: ppp0 <--> /dev/ttyUSB0
Dec 17 21:00:26 localhost pppd[2187]: CHAP authentication succeeded
Dec 17 21:00:26 localhost pppd[2187]: CHAP authentication succeeded
Dec 17 21:00:26 localhost kernel: PPP Deflate Compression modeule registered
Dec 17 21:00:26 localhost pppd[2187]: Could not determine remote IP address: defaulting to 10:64:64:64
Dec 17 21:00:26 localhost pppd[2187]: local IP address 10.163.74.118
Dec 17 21:00:26 localhost pppd[2187]: remote IP address 10.64.64.64
Dec 17 21:00:26 localhost pppd[2187]: primary DNS address 203.82.64.145
Dec 17 21:00:26 localhost pppd[2187]: secondary DNS address 203.82.64.129
Dec 17 21:00:26 localhost pppd[2187]: Terminating on signal 15
Dec 17 21:00:26 localhost pppd[2187]: Connect time 11.4 minutes
Dec 17 21:00:26 localhost pppd[2187]: Sent 120 bytes, received 192 bytes.
Dec 17 21:00:26 localhost pppd[2187]: Connection terminated.
  7. Edit resolver configuration file, /etc/resolv.conf to include name servers we got from above message. 
    8. [jedi@localhost ~] $ vi /etc/resolv.conf

domain localdomain
search localdomain
nameserver 203.82.64.145
nameserver 203.82.64.129
  8. I suspect your worse problem is that the ppp is not getting set to default. Remove the default route to your ethernet card.
    9. [jedi@localhost ~]$ route del default
[jedi@localhost ~]$ route add default gw 10.64.64.64 dev ppp0

    [jedi@localhost ~]$ route
Kernel IP routing table
Destination	gateway	Genmask		Flags	Metric	Ref	Use	Iface
10.64.64.64	*	255.255.255.255 UH				ppp0
default		*	10.64.64.64	UG				ppp0
  9. Try to ping any hostname you know. Replies have been sent to you to show that the PPP connection is established.
    10. [jedi@localhost ~]$ ping www.google.com
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    Mohd Azuraidi bin Harun <jd (dot) azura (at) gmail (dot) com>
    $Id: wvdial.php 456 2014-02-20 16:23 MYT azuraidi $

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