UCPros

I had a licensing overage I couldn’t explain, so I asked AI to investigate.

Pasha Teplitsky — Tue, 21 Jul 2026 17:39:13 +0000

I was looking at licensing numbers on a CUCM cluster last week and something didn't add up. More device licenses consumed than users who should have them. Not a huge gap — but enough to make me dig. So I asked Claude Code to check every phone's Owner User ID field against who actually controls … Continue reading I had a licensing overage I couldn’t explain, so I asked AI to investigate.

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SIP 100 Trying Response Code for SIP Troubleshooting

Pasha Teplitsky — Mon, 16 Nov 2020 13:00:02 +0000

SIP 100 Trying response code is part of the 1XX SIP Response Codes and one of the most commonly used SIP response codes in the SIP stack. SIP works on a request-response model and 1xx SIP response codes are there to provide information on the status of network-related processes, SIP 100 Trying is one of … Continue reading SIP 100 Trying Response Code for SIP Troubleshooting

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SIP 404 Not Found – Understanding SIP 404 Response Code

Pasha Teplitsky — Mon, 09 Nov 2020 13:00:00 +0000

SIP 404 Not Found response belongs to the 4xx SIP code group.A group of SIP codes that indicate a request failure and constitutes a number of codes used by SIP for communicating errors and failures. In this blog post we will explore the SIP 404 Not Found response code and touch the different available SIP … Continue reading SIP 404 Not Found – Understanding SIP 404 Response Code

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How To Properly Configure Cisco CUBE HA

Pasha Teplitsky — Fri, 23 Oct 2020 08:35:44 +0000

Cisco CUBE HA is becoming more prevalent with the CSR1000 or vCUBE, therefore with its popularity, learning how to configure Cisco CUBE HA has become an essential skill that UC engineers should have. General Overview of Cisco CUBE HA Cisco CUBE HA provides preservation of: Transcoded calls Media and Signaling for Active Calls Calls in … Continue reading How To Properly Configure Cisco CUBE HA

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Cisco SIP SRST Configuration

Pasha Teplitsky — Wed, 07 Oct 2020 13:00:00 +0000

Cisco SIP SRST Configuration is the process of providing backup to external SIP Call control (IP-PBX) through the provision of the basic registrar and re-direct server or back-to-back user agent (B2BUA) services. In this blog post, we will provide you with a step by step process that outlines a Cisco SIP SRST Configuration. There are … Continue reading Cisco SIP SRST Configuration

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Configuring Options Ping on CUBE

Pasha Teplitsky — Sat, 03 Oct 2020 13:00:00 +0000

Step by step guide to configuring options Ping on CUBE. Learning how to busy out a dial-peer when a SIP trunk goes down. SIP Options Ping on CUBE.

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Using Wireshark SIP Analysis for VoIP scenarios

adilmeer — Sun, 15 Mar 2020 17:39:19 +0000

Troubleshooting VoIP issues can be troublesome. When something goes wrong, the lack of direct visibility as to what is occurring on the network with SIP and RTP packets can initially be intimidating to network and voice engineers. However, Wireshark SIP analysis turns ordinary engineers into superheroes, allowing them to see deep into the network and … Continue reading Using Wireshark SIP Analysis for VoIP scenarios

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Wireshark Packet Analysis – A Preparation for VoIP Analysis

adilmeer — Wed, 11 Mar 2020 00:03:10 +0000

When there’s trouble in the network, and voice services are suffering, those in need will call upon you, the networking superhero! As a superhero, you use your x-ray vision to zoom in to the microscopic world of voice packets, to perform a Wireshark packet analysis, and to investigate the malfunction and make things right. Then … Continue reading Wireshark Packet Analysis – A Preparation for VoIP Analysis

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Using SPAN Port Mirroring for Wireshark VoIP Troubleshooting

Mon, 02 Dec 2019 19:54:09 +0000

When I encounter a problem on a VoIP network that needs troubleshooting, I just wish that I had microscopic X-ray vision, like a superhero who is able to peer into the subatomic level of things. It would be so advantageous to be able to instantaneously see what is going on with transmissions on the network. … Continue reading Using SPAN Port Mirroring for Wireshark VoIP Troubleshooting

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How to Solve Cisco IP Phone Voice Quality Issues. The step by step guide.

adilmeer — Wed, 13 Nov 2019 22:27:18 +0000

You get a call from a user stating that they have experienced poor voice quality issues with their Cisco IP phone.Your mind goes numb, your palms get sweaty, and your eyes glaze over. What do you do? Where do you start? It’s so much easier to deal with problems where something stops working completely, rather … Continue reading How to Solve Cisco IP Phone Voice Quality Issues. The step by step guide.

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