Technical Articles
Detailed technical articles, test results and solution architectures for network, telecom, IoT and cloud systems. Improve your infrastructure with expert insights.
What Is TR-069?
TR-069 is the CWMP standard ISPs use to remotely configure, monitor, and update customer premises equipment (CPE) via an ACS....
What Are Paging, Announcement, and Central Music Broadcast Systems?
Paging and announcement systems deliver voice messages to zones. Central music broadcast uses the same infrastructure for atmosphere....
What Is ATEX and What Are ATEX Safety Classes?
ATEX refers to the European Union safety framework for equipment and workplaces used in explosive atmospheres....
Tunnel Emergency SOS Communication Systems
Tunnel emergency SOS communication is designed for uninterrupted contact in a crisis, beyond everyday coverage....
Voice over Wi‑Fi (VoWiFi): What Is It?
VoWiFi is the voice path from a supported device over Wi‑Fi to the operator core (IMS); it keeps calls going in weak cellular coverage and depends on ...
What Is FCT? About IP FCT
FCT is a gateway device that carries PBX outbound calls onto the mobile network. Current choices favor LTE / VoLTE-capable IP FCT....
What Is a Call Center?
A call center is an operation that centrally handles large volumes of phone inquiries. A contact center also covers email, chat, and social channels....
Call Center Setup
Call center setup covers technical and operational steps from goal and capacity planning through IVR, ACD, and CRM selection....
What Is a Virtual PBX?
A virtual PBX (cloud / hosted PBX) runs your IP PBX in the provider's data center instead of on-prem servers, delivering extensions, routing, and mult...
What Is PoE?
PoE carries both data and DC power over Ethernet cable. IEEE 802.3af/at/bt classes, PSE/PD roles, and power budget notes for voice and camera projects...
What Is ZRTP?
ZRTP is a protocol that helps exchange keys for SRTP encryption on VoIP media streams; do not confuse it with enterprise SBC + TLS/SRTP....
What Is FreeSWITCH?
FreeSWITCH is a scalable open-source softswitch platform for PBX, call center, and gateway scenarios; it supports SIP and WebRTC....