Hi, I'm using sakis3G by command line.
Machine should be connected all time at 3G network, but sometimes maybe 24h others less time, the connection 3G is killed maybe the network does not want a persistent connection.

Is there anyway to make sakis3G to connect again if ppp gets disconnected? Like an auto reconnect

Tanks

I was in the same situation an I wrote a script for this, see here: http://zool33.uni-graz.at/petz/umtskeeper/
It's running fine here, I'm currently experimenting with new functionality, so check regularly. I would be glad about some feedback, too

Hi that's nice but I found a better way with direct pppd, its faster than sakis and does auto reconnect:

pppd /dev/ttyUSB0 921600 mtu 552 mru 552 modem crtscts dump defaultroute noipdefault usepeerdns ktune noauth logfd 2 logfile /pppd.log lock persist holdoff 2 maxfail 20 connect "/usr/sbin/chat -v -f /etc/ppp/vodafone_chat"

This is the command, find if our 3g modem data serial is on ttyUSB0 sometimes could be on ttyUSB1 or ttyUSB2

U have to edit first the vodafone_chat to your APN, my one is like this:

root@omap:/etc/init.d# cat /etc/ppp/vodafone_chat
# chat script for Huawei E160E HSDPA USB stick with Optus prepaid mobile internet
#
# Developed from sakis3g script
ABORT 'NO CARRIER'
ABORT 'NO DIALTONE'
ABORT 'BUSY'
ABORT 'ERROR'
ABORT 'NO ANSWER'
'' 'AT'
OK 'ATQ0 V1 E1'
OK 'AT&D2 &C1'
OK 'AT+FCLASS=0'
OK 'ATS0=0'
OK 'at+cmgf=1'
OK 'at+cnmi=1,2,0,0,0'
OK 'AT+CGDCONT=1,"IP","internet"'
OK 'ATDT*99#'
CONNECT ''

Also for the first step dont forget to do the registation on network with ur pin with command on serial port AT+CPIN=1234 or disable pin on sim card on some cell phone

If ur good on scripting it would be nice that u add ddclient command on script for update IP dynamic address on http://dyn.com/dns/ on each recconect on 3G (the network disconnect u like every day or 2 days and renew IP)

Best Regards,
Vitor

Dynamic DNS client has been added in version 2.

UMTSkeeper is now at http://mintakaconciencia.net/squares/umtskeeper/

i have a netbook with built-in 3g and wanted a quick & lightweight solution.
i ended up using network-manager without nm-applet or any gui dependencies. works fine for me, takes care of reconnect-on-loss and wake-up. connects in about 10s, whereas sakis3g needed 30s for the same network.

@vitoacmm: good you got it sorted with pppd only!

@Scneckl: while i was setting things up i came across sakis3g & your script. but, isn't sakis3g becoming seriously outdated?
their website is gone completely. i didn't know about the git repository until just know, but even that hasn't seen much action. also, with all due respect, sakis3g is a horrible mess, there's no way of saying it politely. a shell script that contains binary data & tries to re-invent privilege escalation (aka su and sudo).

ondoho,

Good to see that nmcli seems up to the task, finally. I might want to look into that one again to incorporate it. Back when I started my exercise, Sakis3G was the only viable thing I found, that just worked all the proprietary stuff from the commandline.
You're right in a way about the shortcomings of Sakis3G, being a massive shell script with speed penalty to expect. Still I'm glad there is a new maintainer (I guess he needs feedback to go ahead with new devices etc!). That's about having different options. BTW, Sakis3G-binary only includes modeswitch, that was done for convenience at the time. It does not depend on the binary, that's why there is also a "binary-free" version.