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This article details the configuration and use of the Vertex VW110L modem for the U:Fon service.

## Installation

Install usb_modeswitch and usbutils, then create the following override:

    /etc/udev/rules.d/40-usb_modeswitch.rules

    ATTR{idVendor}=="05c6", ATTR{idProduct}=="1000", RUN+=""

Reload udev rules, then plug the Vertex modem in and wait for few second until the red LED on the edge of modem change color to blue.

You should be able to access `/dev/ttyACM0`.

Try screen or minicom to send AT commands to your modem.

## Usage

The modem can now receive AT commands, for example:

- `AT+CSQ` − signal strength (first number) - https://www.gprsmodems.co.uk/images/csq1.pdf
- `ATI` − modem info

## Configuration

To use with pppd, create:

    /etc/ppp/ufon

    TIMEOUT 8
    ABORT BUSY
    ABORT "NO CARRIER"
    ABORT ERROR
    "" 'AT'
    OK ATD#777
    CONNECT \d\c

    /etc/ppp/peers/ufon

    connect "chat -v -f /etc/ppp/ufon"
    ttyACM0
    921600
    crtscts
    persist
    usepeerdns
    defaultroute
    name ufon
    ipparam ufon
    noauth

and manage connection with `pon ufon` for connecting and `poff ufon` for disconnecting.

Category:

- Modems