Voice & PBX
Cloud PBX, SIP Trunk, Microsoft Teams Direct Routing, VoIP Gateway, Voice AI, and enterprise telephony
Main Business Number for Mobile Teams
Plan a main business number for teams away from their desks. Compare mobile apps, call forwarding and queues, with practical setup and testing checks.…
comparisonSIP Trunk vs. Cloud PBX: What Do You Need?
Compare SIP trunks and cloud PBX, understand users, numbers and concurrent calls, and check what your business already has before choosing a package with SIPPER.…
pillarYeastar Cloud PBX API Integration Guide
A practical guide to integrating Yeastar P-Series Cloud Edition with CRM, helpdesk and reporting systems: which API, event and voice paths to use, how to design reliable workflows, and which details t…
pillarWhat Is Cloud PBX? Complete 2026 Guide
Cloud PBX is a private branch exchange (PBX) phone system that runs on cloud infrastructure instead of on-premise hardware. This guide explains what Cloud PBX is, how it differs from traditional PBX, …
pillarWhat Is SIP Trunk? Complete 2026 Guide
SIP Trunk (Session Initiation Protocol Trunk) is a service that connects your phone system to the public switched telephone network (PSTN) over IP, replacing copper analog trunks or ISDN E1 / PRI line…
pillarMicrosoft Teams Direct Routing vs Calling Plans Explained
Organizations using Microsoft Teams have two main options to enable PSTN calling: Direct Routing (connecting in-country SIP Trunks via an SBC) and Calling Plans (Microsoft-provided phone packages). Th…
pillarWhat Is a VoIP Gateway? FXS vs FXO Explained
A VoIP Gateway is a hardware appliance that connects traditional telephony (analog, ISDN, GSM) to an IP voice network (SIP). It lets organizations migrate legacy phone systems to VoIP without ripping …
pillarWhat Is Voice AI in Phone Systems? Transcription, TTS, AI Receptionist
Voice AI in 2026 phone systems is far beyond legacy voicemail. It includes real-time call transcription, automatic summaries, neural TTS for IVR, and AI receptionists that answer calls instead of huma…