CellStream, Inc.

CellStream, Inc. Internetworking, Technology Consulting, and Telecommunications Hands On Training Classes We want to change the network.

We want to accelerate voice and video convergence over the Internet. We want to see creativity increased in telecommunications and networking. We want to see solutions without needless restrictions. We believe that anyone can master these technologies. We believe that anyone can innovate in this industry. Those are our beliefs and our motivations.

We love using 'ping' to test connectivity. In we need to test the control plane of VoIP in the same manner -
05/28/2026

We love using 'ping' to test connectivity. In we need to test the control plane of VoIP in the same manner -

SIP Testing and Troubleshooting with sipsak

Check out our tutorial on using for that you can create in a environment all for !
05/28/2026

Check out our tutorial on using for that you can create in a environment all for !

Using Ansible for Network Automation

What are some real world use cases for in ? Check out our answer to this great question
05/28/2026

What are some real world use cases for in ? Check out our answer to this great question

Real World Use Cases for Ansible in Networking

and is a challenge, and we have this guide for you if you work in and these media gateways:
05/28/2026

and is a challenge, and we have this guide for you if you work in and these media gateways:

Troubleshooting C15 and MGCP Protocols for VoIP

Should I get in networking or security? Great question I try to answer with clarity and transparency
05/27/2026

Should I get in networking or security? Great question I try to answer with clarity and transparency

Should you get Certified?

New to or just learning it? I have started a series on the basics. Let's start with the TCP algorithms:
05/27/2026

New to or just learning it? I have started a series on the basics. Let's start with the TCP algorithms:

TCP Algorithms

people - here is an essential list of repair commands that all of you should have:
05/27/2026

people - here is an essential list of repair commands that all of you should have:

Windows Essential Repair Commands

Troubleshooting traffic is not easy, especially if you are new to it. Here is our QUIC guide:
05/27/2026

Troubleshooting traffic is not easy, especially if you are new to it. Here is our QUIC guide:

Troubleshooting QUIC Traffic - Not Easy

If you are servicing or maintaining you need some great tools. Here is a list we recommend:
05/26/2026

If you are servicing or maintaining you need some great tools. Here is a list we recommend:

Servicing or Repairing Network Equipment

If you could buy 10 books that would serve a great reference for networking technology, what would they be?
05/26/2026

If you could buy 10 books that would serve a great reference for networking technology, what would they be?

The Top Ten Networking Books for Reference

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9812 Zembriski Drive
Plano, TX
75025

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