Asterisk is a hybrid TDM and packet voice PBX (Private Branch eXchange) and IVR platform with ACD functionality. It acts as middleware between the Internet (IAX, SIP, MGCP, Skinny, H.323), telephony channels (like Zaptel, T1, PRI, E1, FXO, FXS, VoIP, VoFR, ISDN, modems, Internet Phone Jack, etc.), and applications (like voice-mail, conferencing, directories, MP3 players, intercoms, etc.). It has many advanced features such as a codec translation API. The base distribution includes several channel backends, as well as applications. However, the beauty of Asterisk is its ability to be extended using its APIs, dynamic module loader, and AGI scripting interface. End users can even write their own applications that run on the system in C or any scripting language of their choice.
Versatile-ISDN (vISDN for short) is yet another ISDN implementation for Linux. It aims at being an open, modular, flexible, and versatile architecture to connect Linux to the ISDN. vISDN is comprised of a channel crossconnector, a lapd/q.931 implementation, an Asterisk channel driver, PPP networking, traffic analysis through Ethereal, and much more. vISDN is in the process of obtaining a certification of compliance from an independent lab. vISDN currently supports Cologne Chip's HFC-based cards for either BRIs and PRIs in user-role or network-role.
DeTeWe ISDN device driver provides a Linux driver and userspace tools to support configuration and Internet access with DeTeWe (USB-VID:0x086c) ISDN hardware, such as soho-PBXs (Eumex x04/OpenCom/BeeTel/TA33 USB), phones (EuroMaster data), and DECT phones (Sinus 6x, BeeTel 40i).
This package contains generic Linux drivers for the Conexant (formerly Rockwell) Softmodem HSF modem family, which are used by many modem and computer system manufacturers. They should work on most current Linux distributions, based on the 2.4.x kernels. A Pentium processor with the MMX enhancements is required. Some systems may require kernel recompilation with special ACPI patches. Preemptible kernels are not yet supported.
This package contains generic Linux drivers for the Conexant HCF (controllerless) modem family used by many modem and computer system manufacturers. They should work on most current Linux distributions, based on the 2.4.x kernels. Some systems may require kernel recompilation with special ACPI patches.