GPRS card connected to the GPRS network in Linux 2.6.15, can send SMS messages, but still no internet?

Hi there,

I have managed to get the Sony Ericsson GPRS GC89 card to connect to the
T-Mobile GPRS network in Linux 2.6.15 and I got messages like these from
pppd :

<beginning of messages from pppd>


Starting GPRS connect script...

Setting the abort string

Initializing modem
AT+cfun=1
OK
AT+cfun=1
OK
AT+cgreg=1
OK
Setting APN


+CGREG: 5
AT
OK
AT+CGDCONT=1,"IP","internet3.voicestream.com"
OK
Dialing...

AT+CGDCONT=2,"IP","internet3.voicestream.com"
OK
ATD*99***1#
CONNECTSerial connection established.
using channel 4
Using interface ppp0
Connect: ppp0 <--> /dev/ttyS4
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xbdf9233d> <pcomp> <accomp>]
rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0xbdf9233d> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xbdf9233d> <pcomp> <accomp>]
rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0xbdf9233d> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x60 <mru 1500> <asyncmap 0x0> <auth pap> <magic
0x30bfe8> <pcomp> <accomp>]
No auth is possible
sent [LCP ConfRej id=0x60 <auth pap>]
rcvd [LCP ConfReq id=0x61 <mru 1500> <asyncmap 0x0> <magic 0x30bfe8> <pcomp>
<accomp>]
sent [LCP ConfAck id=0x61 <mru 1500> <asyncmap 0x0> <magic 0x30bfe8> <pcomp>
<accomp>]
sent [CCP ConfReq id=0x1 <deflate 15> <deflate(old#) 15>]
sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns3
0.0.0.0>]
rcvd [LCP ProtRej id=0x62 80 fd 01 01 00 0c 1a 04 78 00 18 04 78 00]
rcvd [IPCP ConfReq id=0x60 <addr 72.250.5.0> <compress VJ 0f 01>]
sent [IPCP ConfRej id=0x60 <compress VJ 0f 01>]
rcvd [IPCP ConfNak id=0x1 <addr 72.250.5.8> <ms-dns1 66.94.9.120> <ms-dns3
66.94.25.120>]
sent [IPCP ConfReq id=0x2 <addr 72.250.5.8> <ms-dns1 66.94.9.120> <ms-dns3
66.94.25.120>]
rcvd [IPCP ConfReq id=0x61 <addr 72.250.5.0>]
sent [IPCP ConfAck id=0x61 <addr 72.250.5.0>]
rcvd [IPCP ConfAck id=0x2 <addr 72.250.5.8> <ms-dns1 66.94.9.120> <ms-dns3
66.94.25.120>]
not replacing existing default route to eth0 [192.168.1.1]
local IP address 72.250.5.8
remote IP address 72.250.5.0
primary DNS address 66.94.9.120
secondary DNS address 66.94.25.120
Script /etc/ppp/ip-up started (pid 10848)
Script /etc/ppp/ip-up finished (pid 10848), status = 0x0

</end of connection messages>


My connect script for pppd looks like:

###########################################
/dev/ttyS4
57600
lock
crtscts
methods
modem
defaultroute
user ""
password ""

noipdefault
usepeerdns
novj
noauth
persist
debug
nodetach
ipcp-max-configure 20
maxfail 0
connect "/usr/sbin/chat -v -V -t3 -f /etc/ppp/peers/chat-gprs"



So I apparently I have an ip address for my "ppp0" device in ifconfig:

ppp0 Link encap:Point-to-Point Protocol
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:6 errors:0 dropped:0 overruns:0 frame:0
TX packets:11 errors:0 dropped:2 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:190 (190.0 b) TX bytes:511 (511.0 b)


But I am apparently still not on the internet. Pinging anywhere doesn't
work. However, I can successfully send SMS messages when I log onto the card
using minicom and playing around with AT commands

I was hoping to consult with everyone on what might be the problem here. Did
I miss a specific step?

Thanks in advance!
I.S.

---

› See More: GPRS card connected to the GPRS network in Linux 2.6.15, can send SMS messages, but still no internet?

On Wed, 15 Feb 2006 16:35:55 -0800, "D2army" <[email protected]> wrote:

>Hi there,
>
>I have managed to get the Sony Ericsson GPRS GC89 card to connect to the
>T-Mobile GPRS network in Linux 2.6.15 and I got messages like these from
>pppd :

Have you looked through the Sony Ericsson AT Commands manual and
properly set up your card to connect with your service provider?

http://www.cepag.de/GC85_GC89/PC%20C...ds_Rev%20B.pdf

Covers: GC75 GC79 GC82 GC83 GC85 and GC89 (and probably a lot more!)

Bill

D2army <[email protected]> wrote:

> But I am apparently still not on the internet. Pinging anywhere doesn't
> work. However, I can successfully send SMS messages when I log onto the
> card using minicom and playing around with AT commands

how does your routing table (route -n) look like after the ppp connection
has been established?

Sven

--
"and on the third day he rebooted into Linux-1.3.84"
(Linus Torvalds, Easter Kernel Release 1996)

/me is giggls@ircnet, http://sven.gegg.us/ on the Web

On Wed, 15 Feb 2006 16:35:55 -0800, D2army wrote:
> not replacing existing default route to eth0 [192.168.1.1]

That tells you that the routing table hasn't changed. So I assume that
everything is still routed to eth0. I don't know what the right parameter
for pppd would be to change this behaviour, but just for testing purposes,
you could try taking down eth0 first, check that the routine table is
empty, and then connect with pppd - it should write the right routing
table if no default route exists.

Koen

D2army wrote:
> ...
> So I apparently I have an ip address for my "ppp0" device in ifconfig:
>
> ppp0 Link encap:Point-to-Point Protocol
> UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
> RX packets:6 errors:0 dropped:0 overruns:0 frame:0
> TX packets:11 errors:0 dropped:2 overruns:0 carrier:0
> collisions:0 txqueuelen:3
> RX bytes:190 (190.0 b) TX bytes:511 (511.0 b)
>
>
> But I am apparently still not on the internet. Pinging anywhere doesn't
> ...

where is the IP?

Hi Sven

yes, it is indeed a problem with the routing table, thanks. The connection
process is unable to modify the routing table for some reason when my
Ethernet is plugged in or enabled. I disabled the Ethernet, re-ran the
connection script, the routing table does gets modified and now the
connection works.

However, the connection is rather unstable for some reason. I observed that
if the network bandwidth gets too high(like around 113kbps) , the modem will
hang up and the connection will terminate. Then if the script tries to
reconnect and gets to the point of executing the AT+CGDCONT commands, I see
a CME Error 3 which means operation not allowed. I will then minicom to the
card and then try to do AT+CFUN=1 to reset the card, but after I execute
that command, everything else i execute afterwards will give a CME Error 513
which means Link Layer Error apparently

I am wondering if this has something to do with how I wrote my Connection
Script. The card connection is not this unstable when used in XP.

"Sven Geggus" <[email protected]> wrote in message
news:[email protected]...
> D2army <[email protected]> wrote:
>
>> But I am apparently still not on the internet. Pinging anywhere doesn't
>> work. However, I can successfully send SMS messages when I log onto the
>> card using minicom and playing around with AT commands
>
> how does your routing table (route -n) look like after the ppp connection
> has been established?
>
> Sven
>
> --
> "and on the third day he rebooted into Linux-1.3.84"
> (Linus Torvalds, Easter Kernel Release
> 1996)
>
> /me is giggls@ircnet, http://sven.gegg.us/ on the Web

D2army wrote:

> However, the connection is rather unstable for some reason. I
> observed that if the network bandwidth gets too high(like
> around 113kbps) , the modem will hang up and the connection
> will terminate. Then if the script tries to reconnect and gets
> to the point of executing the AT+CGDCONT commands, I see
> a CME Error 3 which means operation not allowed.

Unless I'm mistaken, your "AT+CGDCONT" needs to be executed once
only, when you first set your device up for your particular
carrier. That setting should then persist through sessions and
power-ups indefinitely.

John

Hi John

I believe you are right, but when pppd is going to do a reconnection after
getting disconnected, it will just call the same connect script. This means
those AT+CGDCONT commands will inevitably get called again.

Is it possible to just jump straight to dialing ( "ATD*99***1#" ) during a
reconnection? Is this the right thing to do anyway?

Thanks!
I.S.

"John Henderson" <[email protected]> wrote in message
news:[email protected]...
> D2army wrote:
>
>> However, the connection is rather unstable for some reason. I
>> observed that if the network bandwidth gets too high(like
>> around 113kbps) , the modem will hang up and the connection
>> will terminate. Then if the script tries to reconnect and gets
>> to the point of executing the AT+CGDCONT commands, I see
>> a CME Error 3 which means operation not allowed.
>
> Unless I'm mistaken, your "AT+CGDCONT" needs to be executed once
> only, when you first set your device up for your particular
> carrier. That setting should then persist through sessions and
> power-ups indefinitely.
>
> John

D2army wrote:

> Is it possible to just jump straight to dialing (
> "ATD*99***1#" ) during a reconnection? Is this the right
> thing to do anyway?

That's what I do (Linux kppp dialer). Otherwise only an "ATZ"
command gets executed in my GPRS setup (Wavecom external modem
attached to /dev/ttyS0).

John

Yea, ATZ attempts to restore the card to the factory settings.

But sometimes if I get disconnected, and then I try to even do ATZ, I still
get a CME Error 513

By the way, is there a GUI version of a ppp program for Gnome? I think KPPP
is for KDE

Thanks

"John Henderson" <[email protected]> wrote in message
news:[email protected]...
> D2army wrote:
>
>> Is it possible to just jump straight to dialing (
>> "ATD*99***1#" ) during a reconnection? Is this the right
>> thing to do anyway?
>
> That's what I do (Linux kppp dialer). Otherwise only an "ATZ"
> command gets executed in my GPRS setup (Wavecom external modem
> attached to /dev/ttyS0).
>
> John

D2army wrote:

> Yea, ATZ attempts to restore the card to the factory settings.

Just in case it matters at some stage, "ATZ" restores the
default configuration (which needn't be factory defaults - you
can make certain changes, and use "AT&W" to write them).
"AT&F" is the command to reset to factory defaults.

> But sometimes if I get disconnected, and then I try to even do
> ATZ, I still get a CME Error 513

Have you tried the "AT+CGACT?" command to check your attachment
status? Or the "AT+CGACT=0,1" command to specifically
deactivate the current session prior to trying again?

> By the way, is there a GUI version of a ppp program for Gnome?
> I think KPPP is for KDE

I didn't find one when I looked around on my system for it some
time ago. I'm fairly sure I read about something once though.
Maybe someone else knows.

John