One of our customers recently brought an Acer Aspire 3002NLC Laptop to install Ubuntu and to configure the laptop as a Samba server for his home networking. There was one more thing that he wanted to us to configure - that was internet through the Reliance Datacard. The card provided was ZTE MC315. Installing Ubuntu and configuring the rest of the applications were easy but the reliance datacard installation took some time. But once we figured it out, the steps involved were very simple.
When we inserted the card and check the debug messages we could see that the modem was detected and the driver was loaded successfully. But we were unable to dial and connect to the network. The card was working fine on the dual windows boot. Finally after twiddling through the suggestions given across different sites we figured out that we had to run
sudo setserial uart 16954 sudo setserial baud_base 38400
before trying to connect. Once we set these options for the serial port we ran
sudo pppconfig which created the /etc/ppp/peers/reliance and /etc/chatscripts/reliance files which are given here for your reference.
# This optionfile was generated by pppconfig 2.3.17. # /etc/ppp/peers/reliance # hide-password noauth connect "/usr/sbin/chat -v -f /etc/chatscripts/reliance" debug /dev/ttyS3 115200 defaultroute noipdefault #Your phone number as user user "938xxxxxxx" remotename reliance ipparam reliance usepeerdns
# This chatfile was generated by pppconfig 2.3.17. # Please do not delete any of the comments. Pppconfig needs them. # /etc/chatscripts/reliance # ispauth PAP # abortstring 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#777" # ispconnect CONNECT \d\c # prelogin # ispname # isppassword # postlogin # end of pppconfig stuff
There was a small problem in that we had to run the setserial commands every time we rebooted the system. We solved this also by copying it to a script and then added it to the startup scripts by putting it in rc.local. If you cannot get your connection to work in the exact same way you can use the following troubleshooting tip - get the uart value from dmesg output and then play with the baud_base until you hit a baud_base where the thing works. If you still have problems use the comment form below to ask your questions and we will try to help you with it.