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Asterisk

Open-source PBX and telephony toolkit

Asterisk is an open-source PBX and telephony toolkit. It handles call routing, conferencing and voicemail and supports SIP, and its ARI interface lets developers connect external apps such as AI agents.

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vs Twilio vs Amazon Connect vs Bandwidth Asterisk alternatives

More in Telephony

Twilio

Cloud communications APIs for voice and SMS

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Amazon Connect

AWS cloud contact center

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Bandwidth

Voice APIs on a US carrier network

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FreeSWITCH

Open-source telephony platform and media server

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Jambonz

Open-source voice gateway for voice apps and agents

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Plivo

Voice and SMS APIs with SIP trunking

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