The ECG staff technical blog.
A few cases of SIP dictionary attacks using the "friendly-scanner" have been reported recently. These appear to be active attempts to steal service.
We responded today to an attack on a nationwide Service Provider. They reported up to 69 REGISTERs per second originating from an IP address in Anhui province, China. 69 REGISTERs per second is roughly the equivalent load of 5,000 users.
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Advanced IP PBX Features Can Radically Change the Network Engineering, Support, and Costs for Hosted IP PBX Providers
Many Hosted PBX providers based on VoIP are surprised by the network load caused by the SIP Features "Shared Call Appearance" (SCA), "Shared Line Appearance", "Simultaneous Ring", "Busy Lamp Field" (BLF), or "Line State Monitoring". Both of the big Application Server players, M...
Advanced IP PBX Features Can Radically Change the Network Engineering, Support, and Costs for Hosted IP PBX Providers
Many Hosted PBX providers based on VoIP are surprised by the network load caused by the SIP Features "Shared Call Appearance" (SCA), "Shared Line Appearance", "Simultaneous Ring", "Busy Lamp Field" (BLF), or "Line State Monitoring". Both of the big Application Server players,...
In a March 16 article on The Hill, "Limbaugh prompts healthcare calls, ties up House phone lines", the US House of Representative's Chief Administrative Officer's spokesman, Jeff Ventura, is quoted:
Our phone system is nearing capacity . . . Unlike computers, which can be scaled to accommodate something like this in real time, phone lines are hard-wired, so you have your capacity and once the c...
The Acme Packet SBC is an amazing beast. I tell clients that it's basically a programming language – there's a ton of flexibility, and all kinds of complexity. There are so many ways to accomplish the same thing – which one is best?
ECG has a new, high-speed training class on Acme Packet SIP Trunking and Registration. This is a high-speed class intended to cover just the basics you need to c...
We at ECG are pleased to announce a new training course: BroadWorks Installation and Upgrades.
This class is intended to give engineeers and technicians tons of experience installing, patching, and upgrading BroadWorks. There are a numerous small rules, and a few tricks. We at ECG have been doing BroadWorks installations since R9 – back in 2002. We've done hundreds of installs for carrie...
ECG is rolling out new training courses. Another new class we have is on BroadWorks Call Processing and Troubleshooting.
This is a class for the people who really need to understand how BroadWorks does what it does. They need to know how to fix it when it breaks, and how to determine what's broken.
This class covers all the arcane dark-magic BroadWorks tools, like healthmon, ttIsql, b...
As widely reported today in press releases,
Metaswitch Networks today signaled its ambition to become a major telecommunications vendor, with the appointment of successful industry executive Kevin DeNuccio as chief executive officer. At the same time, John Lazar has been promoted to chairman.
On the conference call discussing the move, DeNuccio focused on some key points.
1. Product Li...
ECG has expanded its Network Design team to include Jonathan Stanley, B.S. C.S. This expansion brings the total design team to six Engineers, capable of designing for 250 carriers per year. This team provides complete Network Designs for VoIP networks, and also reviews of Network Designs provided by Service Providers.
ECG is a leading Network Design and Operation consultancy for the Metaswit...
When you go to the Apple store, do you see an IBM cash register? No, you see store employees using iPod Touchs to do everything.
When you go to the Apple store, do you see a PC at the back for use by the manager? No, all the business machines are Macs.
When you go to the Apple store, do you see PBX business phones? Yes -- you see a store employee talking on an Avaya PBX phone. He's telling a c...
At the BroadSoft Connections 2009 "Executive User's Forum" in Scottsdale, AZ, I got my first positive confirmation that BroadSoft has actually noticed Metaswitch.
I've written before about the two companies. BroadSoft makes quality software, while MetaSwitch makes both good software and good hardware. While the two companies are very different, both BroadSoft and Metaswitch can deliver pho...
Centennial de Puerto Rico, a leading VoIP Service Provider based in San Juan, Puerto Rico, has deployed an Advanced CPE (Customer Premise Equipment) Management System for Cisco/Linksys SPA Phones. The System provides Industry-Leading Security, Manageability, and Reliability.
The new CPE Management System is integrated with BroadSoft's BroadWorks system, the industry-leading softswitch fo...
All the carriers brag about their 3G Networks. I mostly attend to AT&T 3G and Sprint EV-DO; these are the two carriers I use.
Email and file transfer performance is usually disappointing. Transfer speeds as measured by the Ookla "Speedtest" application vary wildly, but the round-trip-time (RTT) latency is consistently quite high.
I recently did a study for a client about the effects of net...
In a Telephony Online article, we're told that Verizon (Landline) CTO thinks the end will come for flat-rate broadband. He means that you won't be able to pay a flat rate and get unlimited access to the Internet. Apparently, AT&T and others have come out and said the same thing.
The problem is that CTOs are focusing on the heavy-tail customers; it works like this:a
Most of your users are c...
Google provides some very nice services; Google Books is useful and technically interesting. They started with printed books, and figured out how to de-warp those images to produce nice flat pages.
Then they used Optical Character Recognition (OCR) to convert the photographs of text into actual computer-manageable text. This brings image data into the domain of structured data, and it make...
Mark Lindsey