modems

Linear digital modems

A new HF digital ARQ/QSO mode.

A multi-platform framework for communicating and interacting with 2G/3G/4G usb modems

CLI tool to communicate with SIM modems by abstracting AT commands

Embedded Async Serial Commander. Implements low lvl embedded API to send and work with any cmd in various ways without OS on any hardware

Monitor RSSI and other modem stuff

FocusGate — USB modem gateway management for Huawei HiLink modems: SIM cards, SMS, and user wallets. C#/.NET.

Lastic's Retro Corner

Networking hardware, primarily embedded: PCB fotos, firmware and other assets

Proxy Management Application

A multi-line answering soft-modem bridge for Asterisk over AudioSocket

Concord Data Systems — independent third-party profile of a public API surface, by API Evangelist. Concord Data Systems was a telecommunications equipment manufacturer founded in 1979 by Ken Miller (previously Director of Modem Development at Codex) and based in Marlborough, Massachusetts.