Profit's Blog

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.

You’re halfway through the workweek and there’s an emergency, a customer needs to migrate thousands numbers from one partition to another or migrate to a new number altogether within 48 hours. What do you do? Hint: Not Panic

Issues in production are the gifts that keep on giving. Another strange one to look at as phones were unable to perform Call Forwarding All (CFA) from phones, depending on which server they were registered to.

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 provides step-by-step instructions for upgrading Cisco’s Smart Software Manager (SSM) On-Prem from version 7-202001 to 8-202102, addressing common issues like Message Authentication Code (MAC) mismatches and using SFTP for file transfers.
I wrote this a while back when running in to issues in a production environment and am finally posting in case others run in to this while preparing for their Alma Linux upgrades. See my other post for those upgrade steps.

As most of the other Cisco Unified Communications products are requiring migration from the underlying CentOS to AlmaLinux, the on-premises satellite license server is no exception. Here are a few high level steps needed in order to migrate.

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.