sip
-
How to Make and Receive SIP to PSTN Calls Using Twilio and Zoiper (Step-by-Step Setup Guide)

Step-by-step guide to making and receiving SIP to PSTN calls using Twilio and Zoiper. Set up SIP registration, TwiML Bins, and start calling in minutes. Continue reading
-
Step-by-Step Guide to SIPp : Build and Install from Source

Build and install SIPp from source on Linux with SSL, PCAP, and SCTP support. Complete guide to compiling the latest release from GitHub. Continue reading
-
Adding slack notifications to kamailio

Integrate Kamailio with Slack to receive real-time VoIP event notifications. Set up webhooks, configure http_client module, and send alerts to channels. Continue reading
-
PJSUA: Getting Started with the CLI Softphone

Install and configure PJSUA, the command-line SIP softphone, on Linux and macOS. Make VoIP calls from your terminal with this step-by-step guide. Continue reading
-
Sipsak: Effective SIP Diagnostics and Testing tool

Use Sipsak for SIP diagnostics and testing — send OPTIONS pings, test registrations, and trace SIP message flows from the command line. Continue reading
-
Kamailio: Managing Logs Effectively

Redirect Kamailio logs from syslog to a dedicated file for easier management and analysis. Step-by-step guide for VoIP server log configuration. Continue reading
-
Stir/Shaken: Understanding the SIP Identity header

Understand how STIR/SHAKEN uses the SIP Identity header to authenticate caller ID and combat robocalls. Covers PASSporT tokens, certificates, and verification. Continue reading
-
Sngrep: Mastering the Art of SIP Call Analysis and Debugging

Master sngrep for real-time SIP traffic monitoring and debugging. Capture, filter, and visualize SIP call flows directly from the command line. Continue reading
-
Different types of DTMF in SIP and why DTMF via RFC2833 is more reliable.

Compare SIP DTMF methods: in-band, SIP INFO, and RFC 2833. Learn why RFC 2833 is the most reliable for IVR navigation and telephony applications. Continue reading
Recent Posts
- How LLM Tool Calling Actually Works: A peek under the hood
- Run Gemma 4 on Raspberry Pi 4B: Complete Free Local AI Setup Guide
- Setup a Simple Web Page Watcher with Phone Notification on Raspberry Pi
- How to Make and Receive SIP to PSTN Calls Using Twilio and Zoiper (Step-by-Step Setup Guide)
- WebGL 3D: An interactive 3D cube (fun experiment)