Asterisk – Open source PBX

Asterisk-based telephony solutions offer a rich and flexible featureset. Asterisk offers both classical PBX functionality and advancedfeatures, and interoperates with traditional standards-based telephonysystems and Voice over IP systems. Asterisk offers the features onewould expect of a large proprietary PBX system such as Voicemail,Conference Bridging, Call Queuing, and Call Detail Records.

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