GPRS

[Martin Slouf]

try calling pppd directly (I have T39m, OskarMobil) -- it helped to me

$ pppd call oskar # oskar is _profile_ name to my settings

_profile_ is a text file (I have it in '/etc/ppp/peers' on my Debian system)

$ cat /etc/ppp/peers/oskar
hide-password
noauth
connect "/usr/sbin/chat -v -f /etc/chatscripts/oskar"
debug
/dev/modem
115200
defaultroute
noipdefault
user internet # change to your provider's values
remotename oskar
ipparam oskar

$ cat /etc/chatscripts/oskar

ABORT BUSY ABORT 'NO CARRIER' ABORT VOICE ABORT 'NO DIALTONE' ABORT 'NO 
DIAL TONE' ABORT 'NO ANSWER' ABORT DELAYED
# modeminit
'' ATZ
# ispnumber
OK-AT-OK ATDT*99***3#
# ispconnect
CONNECT \d\c
# prelogin

# NO LOGGING IN!!!

try and hope.:-) m.

Mark Phalan wrote:
> Hi,
> 
> I have a Siemens C55 phone with GPRS. I have subscribed to GPRS
> service with
> EuroTel here in Prague. I can sucessfully use GPRS on the handset to
> access
> WAP sites.
> My previous experience with modems and connections is limited to using
> wvdial
> so I began by trying to get it to work with wvdial.
> 
> I have confirmed with eurotel that I should use the number *99***1# to
> connect with and that the string AT+CGDCONT=1,"IP","internet" is also
> necessary.
> 
> 
> ######################################################################
> # File:
> # wvdial.conf
> #
> 
> [Dialer Defaults]
> Modem = /dev/ttyS0
> Baud = 115200
> 
> Init1 = ATZ
> Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
> Init3 = AT+CGDCONT=1,"IP","internet"
> 
> SetVolume = 1
> Dial Command = ATD
> 
> Phone = *99***1#
> Username = test
> Password = test
> 
> #######################################################################
> 
> [14:31:13 ~]# wvdial --config wvdial.conf 
> --> WvDial: Internet dialer version 1.53
> --> Initializing modem.
> --> Sending: ATZ
>  
> --> Sending: ATQ0
> ATQ0
> OK
> --> Re-Sending: ATZ
> ATZ
> OK
> --> Initializing modem.
> --> Sending: ATZ
> ATZ
> OK
> --> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
> ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
> OK
> --> Sending: AT+CGDCONT=1,"IP","internet"
> AT+CGDCONT=1,"IP","internet"
> OK
> --> Modem initialized.
> --> Sending: ATD*99***1#
> --> Waiting for carrier.
> ATD*99***1#
> CONNECT
> --> Carrier detected.  Waiting for prompt.
> --> Connected, but carrier signal lost!  Retrying...
> --> Sending: ATD*99***1#
> --> Waiting for carrier.
> NO CARRIER
> ATD*99***1#
> --> No Carrier!  Trying again.
> --> Sending: ATD*99***1#
> --> Waiting for carrier.
> CONNECT
> --> Carrier detected.  Waiting for prompt.
> --> Connected, but carrier signal lost!  Retrying...
> --> Sending: ATD*99***1#
> --> Waiting for carrier.
> NO CARRIER
> 
> ...
> 
> 
> 
> Next I had a look around the net to see if I could find some more info
> on it
> and I found some scripts for use with pppd and chat. I tried them both
> (there was one chat script and another script for wvdial)
> unsucessfully.
> 
> 
> 
> ###############################################################################
> 
> # File:
> # gprs
> #
> # Description:
> # Serial cable, IrDA, Bluetooth and USB pppd options for GPRS phones.
> 
> # Keep pppd attached to the terminal:
> # Comment this to get daemon mode pppd
> nodetach
> 
> # Debug info from pppd:
> # Comment this off, if you don't need more info
> debug
> 
> # Show password in debug messages
> show-password
> 
> # Connect script:
> # scripts to initialize the GPRS modem and start the connection,
> connect /etc/ppp/peers/gprs-connect-chat
> #connect "/usr/bin/wvdial --chat --config
> /etc/ppp/peers/gprs-wvdial.conf myconnection"
> 
> # Disconnect script:
> # AT commands used to 'hangup' the GPRS connection.
> disconnect /etc/ppp/peers/gprs-disconnect-chat
> 
> # Serial device to which the GPRS phone is connected:
> # /dev/ttyS0 for serial port (COM1 in Windows), 
> # /dev/ircomm0 for IrDA,
> # /dev/ttyUB0 for Bluetooth (Bluez with rfcomm running) and
> # /dev/ttyUSB0 for USB
> /dev/ttyS0	# serial port one
> #/dev/ttyS1	# serial port two
> #/dev/ircomm0	# IrDA serial port one
> #/dev/rfcomm0	# Bluetooth serial port one
> #/dev/ttyUSB0	# USB serial device, for example Orange SPV
> 
> # Serial port line speed
> 115200	# fast enough
> #57600	# perhaps usefull with IrDA
> 
> # Hardware flow control:
> # Use hardware flow control with cable, Bluetooth and USB but not with
> IrDA.
> crtscts  # serial cable, Bluetooth and USB
> #nocrtscts # IrDA
> 
> # Ignore carrier detect signal from the modem:
> local
> 
> # IP addresses:
> # - accept peers idea of our local address and set address peer as
> 10.0.0.1
> # (any address would do, since IPCP gives 0.0.0.0 to it)
> # - if you use the 10. network at home or something and pppd rejects
> it,
> # change the address to something else 
> :10.0.0.1
> 
> # pppd must not propose any IP address to the peer!
> noipdefault
> 
> # Accept peers idea of our local address
> ipcp-accept-local
> 
> # Add the ppp interface as default route to the IP routing table
> defaultroute
> 
> # DNS servers from the phone:
> # some phones support this, some don't.
> usepeerdns
> 
> # ppp compression:
> # ppp compression may be used between the phone and the pppd, but the 
> # serial connection is usually not the bottleneck in GPRS, so the 
> # compression is useless (and with some phones need to disabled before
> # the LCP negotiations succeed).
> novj
> nobsdcomp
> novjccomp
> nopcomp
> noaccomp
> 
> # The phone is not required to authenticate:
> noauth
> 
> # Username and password:
> # If username and password are required by the APN, put here the
> username
> # and put the username-password combination to the secrets file: 
> # /etc/ppp/pap-secrets for PAP and /etc/ppp/chap-secrets for CHAP 
> # authentication. See pppd man pages for details.
> # Example, Radiolinja operator pap-secrets: 
> # "rlnet"         *       "internet"	*
> #user "test"
> 
> # Asyncmap:
> # some phones may require this option.
> #asyncmap 0xa0000
> 
> # No magic:
> # some phones may require this option.
> #nomagic
> 
> # Require PAP authentication:
> # some phones may require this option.
> #require-pap
> 
> 
> ############################################################################
> 
> # File:
> # gprs-wvdial.conf
> #
> # Description:
> # Wvdial settings for different GPRS phones and operators. See wvdial
> man pages
> # for more help. Below are the service specific settings, which should
> be given
> # by the operator - at least the 
> #
> # Set PDP (Packet Data Protocol) context CID (Context ID)  = 1 (an
> index sort of
> # since a phone may have many different GPRS settings), protocol = IP,
> # APN (Access Point Name) = "internet":
> # AT+CGDCONT=1,"IP","internet","",0,0
> #
> # Set CID=1 QoS (Quality of Service) requirements from the network,
> not
> # supported by Nokia phones:
> # AT+CGQREQ=1,0,0,0,0,0
> #
> # Set CID=1 minimum acceptable QoS parameters, not supported by Nokia
> phones:
> # AT+CGQMIN=1,0,0,0,0,0
> #
> # Call CID=1 which activate PDP context one and perform GPRS attach:
> # ATD*99***1#
> # 
> # Some phones seem to have only one CID, in which case the CID can be
> omitted
> # when calling:
> # ATD*99#
> # 
> # Init4 = AT+CGQREQ=1,0,0,0,0,0
> # Init5 = AT+CGQMIN=1,0,0,0,0,0
> 
> 
> [Dialer myconnection]
> Modem = /dev/ttyS0
> Baud = 115200
> Init1 = ATH
> Init2 = ATE1
> Init3 = AT+CGDCONT=1,"IP","internet"
> #Init4 = AT+CGQREQ=1,0,0,0,0,0
> #Init5 = AT+CGQMIN=1,0,0,0,0,0
> Dial Command = ATD
> Phone = *99***1#
> 
> # Keep wvdial happy
> Username = internet
> Password = internet
> 
> 
> ######################################################################
> 
> #!/bin/sh
> # 
> # File: 
> # gprs-connect-chat
> #
> # Description: 
> # chat script to open Radiolinjas GPRS service with GPRS phones. If
> ppp
> # negotiation stalls, try restarting the phone. To try with other GPRS
> # operator setting, change the PDP contex setting. The settings work
> with
> # most Ericsson models, but Nokia 8310 and 30 do not support QoS
> parameters
> # with AT commands, so just delete those lines and it'll work.
> #
> # Set PDP context CID=1, protocol=IP, APN=internet:
> # AT+CGDCONT=1,"IP","internet","",0,0
> #
> # Set CID=1 QoS requirements from the network, not supported by Nokia:
> # AT+CGQREQ=1,0,0,0,0,0
> #
> # Set CID=1 minimum acceptable QoS parameters, not supported by Nokia:
> # AT+CGQMIN=1,0,0,0,0,0
> #
> # 'Call' CID=1 (activate PDP context one, perform GPRS attach):
> # ATD*99***1#
> #
> # Some phones like the Orange SPV (yes, the Microsoft Smartphone) use
> this
> # dial string to start GPRS connection:
> #ATDT*99#
> #
> # The actual chat script:
> exec chat 						\
> 	TIMEOUT		5				\
> 	ECHO 		ON				\
> 	ABORT		'\nBUSY\r'			\
> 	ABORT		'\nERROR\r'			\
> 	ABORT		'\nNO ANSWER\r'			\
> 	ABORT		'\nNO CARRIER\r'		\
> 	ABORT		'\nNO DIALTONE\r'		\
> 	ABORT		'\nRINGING\r\n\r\nRINGING\r'	\
> 	''		\rAT				\
> 	TIMEOUT		12				\
> 	SAY		"Press CTRL-C to close the connection at any stage!"	\
> 	SAY		"\ndefining PDP context..\n"	\
> 	OK		ATZ				\
> 	SAY		"Sent ATZ"			\
> 	OK		ATE1				\
> 	SAY		"Sent ATE1"			\
> 	OK		'AT+CGDCONT=1,"IP","internet"'	\
> 	SAY		"Sent AT+CGDCONT=1,IP,internet" \
> 	OK		ATD*99***1#				\
> 	SAY		"Dialing with ATD*99***#"	\
> 	TIMEOUT		22				\
> 	SAY		"\nwaiting for connect...\n"	\
> 	CONNECT		""				\
> 	SAY		"\nConnected." \
> 	SAY		"\nIf the following ppp negotiations fail,\n"	\
> 	SAY		"try restarting the phone.\n"
> 		
> 
> Here is what happened with the wvdial script.
> 
> [12:44:10 /etc/ppp/peers]# pppd call gprs
> --> WvDial: Internet dialer version 1.53
> --> Initializing modem.
> --> Sending: ATH
>  
> --> Sending: ATQ0
> ATQ0
> OK
> --> Re-Sending: ATH
> ATH
> OK
> --> Initializing modem.
> --> Sending: ATH
> ATH
> OK
> --> Sending: ATE1
> ATE1
> OK
> --> Sending: AT+CGDCONT=1,"IP","internet"
> AT+CGDCONT=1,"IP","internet"
> OK
> --> Modem initialized.
> --> Sending: ATD*99***1#
> --> Waiting for carrier.
> ATD*99***1#
> CONNECT
> --> Carrier detected.  Waiting for prompt.
> NO CARRIER
> --> Don't know what to do!  Starting pppd and hoping for the best.
> Serial connection established.
> using channel 6
> Using interface ppp0
> Connect: ppp0 <--> /dev/ttyS0
> sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe304c522>]
> sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe304c522>]
> sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe304c522>]
> sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe304c522>]
> sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe304c522>]
> sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe304c522>]
> sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe304c522>]
> sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe304c522>]
> sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe304c522>]
> sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe304c522>]
> LCP: timeout sending Config-Requests
> Connection terminated.
> 
> Sending break to the modem
> 
> PDP context detached
> Serial link disconnected.
> 
> 
> Here is what happened with the chat script.
> 
> [12:48:42 /etc/ppp/peers]# pppd call gprs
> Press CTRL-C to close the connection at any stage!
> defining PDP context..
> ^@
> Connect script failed
> 
> 
> 
> I also tried to send the AT commands straight to the modem
> via kermit.
> 
> [14:42:41 ~]# kermit
> C-Kermit 8.0.206, 24 Oct 2002, for Red Hat Linux 8.0
>  Copyright (C) 1985, 2002,
>   Trustees of Columbia University in the City of New York.
> Type ? or HELP for help.
> (/root/) C-Kermit>set line /dev/ttyS0
> Removing stale lock /var/lock/LCK..ttyS0 (pid 3067 terminated)
> (/root/) C-Kermit>quit
> Closing /dev/ttyS0...OK
> [14:42:53 ~]# kermit
> C-Kermit 8.0.206, 24 Oct 2002, for Red Hat Linux 8.0
>  Copyright (C) 1985, 2002,
>   Trustees of Columbia University in the City of New York.
> Type ? or HELP for help.
> (/root/) C-Kermit>set line /dev/ttyS0
> (/root/) C-Kermit>set speed 115200
> /dev/ttyS0, 115200 bps
> (/root/) C-Kermit>set carrier-watch off
> (/root/) C-Kermit>c
> Connecting to /dev/ttyS0, speed 115200
>  Escape character: Ctrl-\ (ASCII 28, FS): enabled
> Type the escape character followed by C to get back,
> or followed by ? to see other options.
> ----------------------------------------------------
> atz
> OK
> AT+CGDCONT=1,"IP","internet"
> OK
> ATD*99***1#
> CONNECT
> 
> NO CARRIER
> 
> 
> The phone never creates a GPRS connection - or at least
> it doesn't display that fact on the handset if it does.
> 
> I'm at a bit of a loss and would gladly persue any suggestions anyone
> might have.
> 
> I'll probably try it with windows next (although its going to be
> a lot of hassle!)
> 
> Thanks,
> 
> Mark.