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  1. He did get donations, but this switch meant that he had to work on new developments in secret, giving up the open, community-based style of development. This in turn annoyed the community members who had enjoyed giving their time and ideas, instead of their money, for Ronja development.

  2. "FreeSWITCH is an open source telephony platform designed to facilitate the creation of voice and chat driven products scaling from a soft-phone up to a soft-switch. It can be used as a simple switching engine, a PBX, a media gateway or a media server to host IVR applications using simple scripts or XML to control the callflow.

  3. The Players: The IETF, which is developing the standard; the College of William & Mary and Columbia University, which have early working implementations of P2P SIP; and developers of consumer-oriented SIP clients, including vendors such as Xten Networks.

  4. Switched point-to-point topologies are the basic model of conventional telephony. The value of a permanent point-to-point network is the value of guaranteed, or nearly so, communications between the two endpoints. The value of an on-demand point-to-point connection is proportional to the number of potential pairs of subscribers, and has been ...

  5. In "pure" P2P systems, every node acts as a server and client - and they share resources without any centralized control. However most P2P applications have some degree of centralization. These are called "hybrid" P2P networks and they centralize at least the list of users. This is how instant messengers or file sharing programs work - the system keeps a list of users with their IP addresses.

  6. If you can't share out tasks, you can't have people working independently, at their own pace and in their own way, which means the project isn't really open. If it isn't modular, you can't swap in some new elements while leaving everything else untouched, which means no "release early, release often", no experimentation, no rapid evolution.

  7. Introduction. Kojin Karatani: "The history of social formations should be seen in terms of hybrid forms that include multiple modes of exchange. But the various modes of exchange themselves also undergo transformations within the transformations of social formations. The first social formation arises with clan society, in which mode A is dominant.