CUBE

Long ago, one may have received a spam call maybe once a month. Advancing technology introduced robo calling and number spoofing. The ability to automate unsolicited calls for marketing or spam has increased the need for better posturing and filtering at the edge. This post will cover an easy way to block those calls from your network.

I ran in to an issue in a customer’s production environment a few months back with a voice stream not negotiating Secure Real Time Transport Protocol (SRTP) even though it was configured correctly on the customer’s edge router, or so we thought.

This document details using Tool Command Language (TCL) for managing dynamic E164-pattern-maps on routers, focusing on migration scenarios with frequent, noncontiguous number block changes. It outlines syntax and methodologies to optimize handling these updates, ensuring seamless modifications during transitions.