Asterisk vs Ozonetel IVR System

Asterisk is a free, open-source framework for building communications applications and turning an ordinary computer into a communications server. It powers IP PBX systems, VoIP gateways, conference servers, call centers, voicemail servers, and IVR systems. Listed functions include call routing, recording, queuing, conferencing, voicemail, automated attendants, and call transfers. Computer-telephony interfaces include AGI, AMI, and the Asterisk REST Interface (ARI); listed VoIP protocols include SIP, H.323, IAX, Jingle/XMPP, MGCP, and SCCP. Asterisk can connect communications to applications, including CRM systems through AMI. The source code can be downloaded, and the project points users to installation on a modern cloud Linux instance. Building applications requires working knowledge of Linux, scripting, networking, and telephony. Asterisk is distributed under GPLv2; Sangoma offers commercial licensing for uses incompatible with that license. The Asterisk forum provides community help with installation, upgrades, and operation.

Ozonetel IVR System is a cloud service for automated attendants, caller self-service, and smart call routing. Its visual builder lets users create and change IVR flows without code. Callers can navigate multi-level menus, use after-hours routing or callbacks, and reach skills-based routing. Speech recognition and natural language processing allow spoken interaction instead of keypad input. The system can run outbound campaigns for satisfaction surveys, feedback collection, and notifications about offers or dues. Listed CRM and CTI integrations include Salesforce, Zoho, Zendesk, Freshdesk, and HubSpot. An open API library and the option to use an existing SIP trunk are available. Ozonetel says its self-service tools can triple call-handling capacity and enable four-times-faster response times; it also says the platform handles 2.5 billion calls annually. Support includes 24 x 7 live phone assistance, onboarding, and training. Ozonetel states that it is HIPAA compliant and holds ISO 27001:2013 and ISO 20000-1:2018 certifications. Pricing is on request, and a 7-day trial is promoted. The advertised 99.99% uptime SLA varies by region.