OpenZap
Bear with me for a few paragraphs and you'll be wiser by understanding how the OSS telephony revolution started and how FreeTDM came into existence and was integrated in FreeSWITCH.
In the early days of the FreeSWITCH project, Anthony wrote the telephony library, "OpenZap" and the endpoint driver, mod_openzap to interconnect FreeSWITCH with analog and digital time domain multiplexing (TDM) networks, making use of telephony hardware from vendors such as Sangoma, Digium, and Pika Technologies. The OpenZap project was named after the older "Zapata Telephony"(ZapTel) project by Jim Dixon, who was probably the first person to come up with an open source driver to connect an ISDN telephony card and then a cheap voice modem to a BSD/Linux computer. ZapTel was a revolutionary project in many ways (hence the name "Zapata Telephony", after the Mexican revolutionary, Emiliano Zapata) and provided a critical boost to the open source telephony movement (which...
