OnSIP vs Yeastar P-Series Cloud Edition

OnSIP is a business phone system with multiple business numbers, an auto attendant, custom call routing, and voicemail transcription. It provides desktop and mobile apps as well as a browser softphone, available in Chrome, Firefox, and Opera. Apps are listed for Windows, Mac, iPhone, and Android. The free plan supports up to 100 users and unlimited extensions, and includes Zendesk, HubSpot, and Odoo integrations. Free SIP accounts cannot dial regular phone numbers; paid plans offer a SIP-to-PSTN gateway. Paid plans start at $18.95/user/mo, and a 30-day trial is listed. Month-to-month contracts are available, with payment based on users and features. A SIP address can have active registrations on up to 10 devices. Softphone apps provide end-to-end encryption, and encryption is also available for desk phones. When both parties use the OnSIP app, professional call-link media is encrypted using DTLS SRTP. The Admin Portal supports setup, real-time feature edits, payment and contact management, and invoices.

Yeastar P-Series Cloud Edition brings business telephony, contact center functions and integrations together in a cloud platform. Users can make and receive calls through mobile, desktop or browser clients, with audio and video calls, screen-sharing meetings, messaging and real-time presence. Call handling includes custom routing, an auto attendant and voicemail transcription. Contact center functions cover inbound call management, outbound campaigns and messaging through WhatsApp, SMS, Facebook and Live Chat. Integrations include Microsoft Teams, Outlook, Google Workspace, Microsoft Entra ID, Red Hat SSO and CRM systems such as Salesforce, HubSpot and Zoho. CRM connections can enable click-to-call, call pop-ups and record synchronization; helpdesk connections support dialing, call logging, contact synchronization and ticket creation. The API can query PBX status, configure features, control calls and monitor events, but requires firmware 84.7.0.17 or later and API enablement. A 30-day trial includes 10 extensions and 10 concurrent calls, with full feature access and no credit card required. Optional AI Receptionist and call transcription require add-on subscriptions. Yeastar was founded in 2006 and is headquartered in Xiamen, China.