Troubleshooting PSTN Behaviour by Comparing Call Recordings and Packet Captures

Posted by John Marrett on Apr 11, 2019 11:30:52 AM

Your companies telecommunications are only as good as your voice quality. Without good voice quality... well there's always email.

Sometimes after you've corrected QoS misconfigurations, validated WAN and LAN behavior and validated your fixes you still have user complaints. In this blog post, we dive deep into techniques that allow you to analyze and measure the behavior of the PSTN, beyond your SIP termination points and into the public phone networks. In this specific example even call recordings showed good voice quality. However, we established that the issues were related to call latency. Normally there is no way to measure latency without the use of specialized tooling, but we developed the following technique.

There are a number of factors that contribute to poor voice quality. In this article, we discuss methods to troubleshoot and isolate voice quality issues outside of the network and on the PSTN using packet captures and call recordings. Packet captures are one of the most powerful troubleshooting tools we have.

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Topics: CUCM, Cisco CUCM, packet captures, Voice quality, PSTN

Cisco Deprecated IP Phones in CUCM 14.0

Posted by Eric Losier on Mar 26, 2019 12:52:21 PM

Planning an upgrade for your Cisco Unified Communications environment? Preparing technology budgets for next year? In addition to getting your favorite Cisco UC experts involved for upgrading your systems to the latest release, Cisco has a surprise in store for long-time customers of their UC platform. Recently, Cisco has announced a large selection of IP phone models which will be deprecated with CUCM release 14.0. The silver lining: version 14 is not planned before 2020, so there is time to prepare for this impending event!

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Topics: CUCM, Cisco CUCM, CUCM 14.0, cisco ip phones, ip phones, Deprecated IP Phones

Automating Unified Communications

Posted by Jamin Horton on Jan 16, 2019 8:25:16 AM

So when you think “automation” what comes to mind? Your thermostat or sprinkler system, maybe your coffee maker or online bill pay? Perhaps something a little more with an industrial feel like robots in a car factory or bottle processing at a beverage plant? Or is it something really sinister like out of control automated artificial intelligence that eliminates all our jobs? Hey, at least we’d all get universal income right? I guess the point is that whether you really think about it or not automation does play some part of your daily life.

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Topics: CUCM, Provisioning, SMACS, Cisco CUCM, automation

SMACS Provisioning Solution Version 5 - Added Simplicity, More Automation Than Ever!

Posted by Carl Karawani on May 31, 2018 8:55:40 AM

 

With Cisco Live right around the corner, the Stack8 development team has sprinted to the finish line with the delivery of Stack8 Moves, Adds, and Changes System (SMACS) Version 5 provisioning solution for Cisco UC.

This new release brings together all kinds of automation goodies with Active Directory while keeping the simplicity and user-friendliness SMACS users have come to know and love. 

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Topics: Moves, Adds, and Changes, SMACS, Cisco Unified Communications Manager, Cisco CUCM, user provisioning

Cisco Jabber 12.0 – What’s New and Exciting

Posted by Stack8 Marketing on Apr 12, 2018 9:45:38 AM

If you are a sports fan like me, particularly American football, the number 12 is synonymous with excellence. From Joe Namath, Terry Bradshaw and Jim Kelly to Tom Brady, the number 12 is identified with some of the best players ever to hit the field.

Recently, Cisco released Jabber 12. In this article, we will look at all that is exciting and new in Jabber version 12.0, and see if it lives up to the magic of the number 12.

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Topics: Jabber, CUCM, cisco jabber, Cisco CUCM, jabber client, Jabber 12.0

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