Install wvdial: sudo apt-get install wvdialand use network manager i.e insert the modem (with SIM) and wait until a mobile broadband entry shows up in the network manager. Click on the mobile broadband entry and setup your connection.

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Teletalk 3g Flash Modem Software Install In Win 8 1

It provides selecting common operators like GP, Robi etc. Or you can set the APN and other options manually.If no mobile broadband connection shows up on network manager, try uninstalling any previous installation: cd /opt/Teletalk3Gsudo./uninstallIf it still doesn't show up, reboot and wait. If that doesn't work, unmount (eject) the modem (not physically though:D, right click on the modem usb device on file manager and unmount/eject), It should show up on your network manager soon.