Project ip-usbph

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Introduction

This is the page for Linux support library for the Holtek Semiconductor, Inc. based Kinamax/Sabrent IP-USBPH VoIP phone, as pictured below.

Kinamax IP-USBPH.jpeg

This wired USB phone is based off of a Holtek Semiconductor MCU, and is recognized in Linux as a "GoodCom WJT602" USB audio device, with a HID input device:

[45395.505831] input: GoodCom WJT602 USB Audio Device as /devices/pci0000:00/0000:00:1d.0/usb1/1-2/1-2:1.3/input/input23
[45395.560226] input,hiddev96,hidraw0: USB HID v1.10 Device [GoodCom WJT602 USB Audio Device] on usb-0000:00:1d.0-2

lsusb reports this device as:

$ lsusb -d 04d9:0602
Bus 001 Device 004: ID 04d9:0602 Holtek Semiconductor, Inc. 
$

Download

The sources are available via:

What does libip-usbph do?

The library has APIs for the following:

  • Setting all symbols on the LCD
  • A built-in ASCII to 14-segment LCD font converter
  • Backlight control
  • Keypad events

The library does not control the microphone nor the speaker of the phone - use the standard Linux ALSA USB audio for those services.

License

This clean-room engineered library is licensed under the LGPL.

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