{"id":18,"date":"2008-01-30T22:31:27","date_gmt":"2008-01-30T17:01:27","guid":{"rendered":"http:\/\/brainstorms.in\/?p=18"},"modified":"2008-01-30T22:31:27","modified_gmt":"2008-01-30T17:01:27","slug":"option-technology-globe-trotter-pcmca-card-on-debian-gnulinux","status":"publish","type":"post","link":"https:\/\/brainstorms.in\/?p=18","title":{"rendered":"Option Technology Globe Trotter PCMCA card on Debian GNU\/Linux"},"content":{"rendered":"

My friend, Ramakrishnan VU2KUC, has been asking me to install necessary drivers for his Option Technology Globe Trotter PCMCA card<\/a> on Debian Linux. I think he has made at least 20 phone calls for same. This morning he brought his Compaq laptop to my home and asked me to fix it. I had no other choice left.
\nI made a google search and found that Option does not officially support Linux. But they gave me a link<\/a>
\nwhich gave a general outline.
\nThe actual driver for this GPRS modem is at
\n http:\/\/sourceforge.net\/projects\/comgt<\/a>
\n(Later on I found out I can apt it as apt- get install gcom)
\nThe man page of comgt\/gcom is very informative.
\nI inserted the card. It was recognized as a modem at ttyS2<\/p>\n

pccard: PCMCIA card inserted into slot 0
\npcmcia: registering new device pcmcia0.0
\n0.0: ttyS2 at I\/O 0\u00d73e8 (irq = 3) is a 16550A<\/p>\n

I made a link to \/dev\/modem<\/p>\n

#ln \/dev\/ttyS2 \/dev\/modem<\/p>\n

Then installed wvdial and ran wvdialconf, which created a basic wvdial.conf in \/etc\/
\n# apt-get install wvdial<\/p>\n

I tweaked \/etc\/wvdial.conf as below<\/p>\n

[Dialer Defaults]
\nInit1 = ATZ
\nInit2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
\nInit3 = AT+CGDCONT=1,\u201dIP\u201d,\u201dgprssouth.cellone.in\u201d
\nModem = \/dev\/modem
\nPhone = *99***1#
\nIdle Seconds = 3000
\nPassword = dummy
\nModem Type = Analog Modem
\nStupid Mode = 1
\nCompuserve = 0
\nBaud = 115200
\nAuto DNS = 1
\nDial Command = ATD
\nAsk Password = 0
\nISDN = 0
\nUsername = dummy<\/p>\n

\u201cgprssouth.cellone.in \u201d is the APN, which you have to obtain from your service provider.
\nThen I did
\n# gcom -d \/dev\/ttyS2<\/p>\n

SIM ready
\nWaiting for Registration..(120 sec max)
\nRegistered on Home network: \u201cCellOne\u201d
\nSignal Quality: 15,99<\/p>\n

This registered the SIM to the BSNL<\/a> ( local provider) network<\/p>\n

I tried to dial into the BSNL network<\/p>\n

#wvdial
\nThe modem connected to the Internet and I could browse.
\nBut after 2 minutes the connection dropped suddenly. This happened several times. I examined the log and found this error message<\/p>\n

The PPP daemon has died: Lack of LCP echo<\/a> responses (exit code = 15)
\n\u2013> man pppd explains pppd error codes in more detail.<\/p>\n

It seems the gprs modem is handling the LCP request properly. I edited the \/etc\/ppp\/peers\/wvdial as below and disabled LCP echo failure<\/p>\n

noauth
\nname wvdial
\nusepeerdns
\nlcp-echo-failure 0
\nlcp-echo-interval 0<\/p>\n

Now the connections stays even after 2 minutes.<\/p>\n

VU2KUC is a happy man. \":)\"<\/p>\n","protected":false},"excerpt":{"rendered":"

My friend, Ramakrishnan VU2KUC, has been asking me to install necessary drivers for his Option Technology Globe Trotter PCMCA card on Debian Linux. I think he has made at least 20 phone calls for same. This morning he brought his Compaq laptop to my home and asked me to fix it. I had no other… Continue reading Option Technology Globe Trotter PCMCA card on Debian GNU\/Linux<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,9],"tags":[],"_links":{"self":[{"href":"https:\/\/brainstorms.in\/index.php?rest_route=\/wp\/v2\/posts\/18"}],"collection":[{"href":"https:\/\/brainstorms.in\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/brainstorms.in\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/brainstorms.in\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/brainstorms.in\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=18"}],"version-history":[{"count":0,"href":"https:\/\/brainstorms.in\/index.php?rest_route=\/wp\/v2\/posts\/18\/revisions"}],"wp:attachment":[{"href":"https:\/\/brainstorms.in\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=18"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/brainstorms.in\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=18"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/brainstorms.in\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=18"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}