VoIP in Wireshark – Where is the problem?
Wireshark is an open-source tool that allows you to capture and analyze network traffic in real time. It's an important resource for optimizing networks, including VoIP networks. read more
Articles by Fábio Cosme
SIP TRUNK – The telephone channel over IP
In the RCTS VoIP network, the term SIP Trunk is often used when referring to the interconnection of our VoIP equipment with operators. read more
eSIM: The new “card”
We are all familiar with the famous small removable card used in mobile devices to identify the user of a telephone operator's network, the... read more
ENUM: The famous unknown
ENUM is perhaps the most talked-about protocol of the RCTS VoIP network and the cornerstone of the network. But what is ENUM? read more
SDP: Session Description Protocol – Are we done?
Along with SIP, the Session Description Protocol (SDP) is a fundamental protocol for VoIP and the RCTS VoIP network. This article explores the importance of SDP and how it is used to negotiate voice session characteristics. read more
RTP: The protocol that guarantees your voice in VoIP calls
Responsible for transmitting audio and video data in real time, RTP, or Real-time Transport Protocol, is a protocol used in voice over IP (VoIP) communications. read more
The Session Initiation Protocol (SIP): How Digital Communication Just Got Easier
Due to its broad compatibility between devices and because it is an open and flexible protocol, SIP, considered the standard protocol, is the main star... read more