Category: Phone Systems

Microsoft updated the root Certificate Authorities for Direct Routing SIP signaling in early 2026, requiring every Session Border Controller to trust new DigiCert and Microsoft 2017 root certificates by March.

WebRTC’s ICE framework tests three distinct candidate paths before a single audio packet moves between browser-based VoIP endpoints on a Philippine enterprise network: host candidates on the local interface, server-reflexive candidates discovered through STUN, and relay candidates routed through TUR

Cloud VoIP delivers lower five-year total cost of ownership for Philippine enterprises running 50 or more extensions, with savings between 30% and 45% compared to on-premise PBX hardware.

Every SIP trunk connecting a Philippine enterprise PBX to an external carrier should pass through a Session Border Controller deployed in the network DMZ.

Philippine BPOs choosing a call center capacity planning method face three realistic options: the classic Erlang C formula run in a spreadsheet, a modified Erlang C layered with shrinkage and occupancy adjustments, or a full AI-driven workforce management platform.

Cisco’s IM & Presence Service runs as a dedicated cluster, syncing availability data through SIP SUBSCRIBE/NOTIFY exchanges. On Microsoft Teams, presence is a cloud-native signal processed through Azure’s global infrastructure.