The solutions growing up around the Asterisk telephony engine and toolkit are plentiful. One of the latest is The Amanda Company's Vdex-40, reputed to be the first embedded Asterisk-based system to enhance voice quality. The secret, according to the company, is “the inclusion of multiple microprocessors as well as DSPs”. The Vdex-40 ships with 16 G.711, G.723.1, G.726 and G.729a/b voice codecs (a mix of 16 concurrent codecs), hardware-based G.168 echo cancellation and four built-in telecom line ports. Amanda also touts the Vdex-40's elimination of moving parts, such as fans and hard drives, which further improves the product's reliability. Despite its technological advancements, the Vdex-40 is intended to be an affordable, Internet-enabled telephone system for the needs of the small office/home office market.
The goal of the British firm SIMPOL is to simplify cross-platform software development, which has been advanced recently with two new products: the SIMPOL Developer Kit and SIMPOL Desktop. First, the SIMPOL Developer Kit, using the SIMPOL programming language with redistributable libraries, provides the components necessary for creating applications of many types, such as desktop, Web server and standalone server. Future releases will support application development for Mac OS X, Windows CE and SymbianOS. Second, the SIMPOL Desktop, which works with the Developer Kit, is a lightweight end-user database product that enables users to build data-rich applications without programming and to modify sample applications. One can create an application based on database tables, forms and reports. Applications can be deployed by writing them as extensions to SIMPOL Desktop rather than re-inventing all the functionality over again.
If you are managing high-volume Web infrastructures, check out the new version 3.2 of Hyperic HQ from Hyperic, Inc. HQ's value proposition is an open-source solution offering “hands-free monitoring and management for Web-scale systems”. HQ supplies performance and event data, product coverage and the functionality operations teams need to discover, diagnose and deliver a solution in a single tool. Version 3.2 adds features, such as cross-platform diagnostic tools, Nagios support and MySQL support with up to 1.5 million transactions per minute. Hyperic also counts CNET as one of its customers. Linux support includes Red Hat and Fedora. The standard edition and a three-device trial enterprise edition of Hyperic HQ are available at Hyperic's Web site.
Keeping track of the licensing conditions of the complete source code of an open-source project can be a pain. Such pain stimulated HP's FOSSology Project, a tool that quickly and accurately describes how a given open-source project is licensed. FOSSology analyzes all the source code for a given project and reports all the licenses being used, “based on the license declarations and tell-tale phrases that identify software licensing”, says HP. The goal of FOSSology, which literally means “the study of FOSS”, is twofold. First, HP seeks to allow IT organizations to adopt open-source software confidently, as well as to uncover what open-source software is being used within their environments. Second, HP seeks to support open-source developers and distributors to create a clear licensing picture of the projects and packages they produce. The tool is available to all in order to promote a more vibrant, open community of open-source users and contributors.
Developers of embedded systems are typically faced with the challenge that every new controller needs a separate debugging or programming adapter. These often either are not available or disappointing on the Linux platform. To the rescue is Embedded Products' USBprog, a free, universal programming adapter with a bootloader and tools that allow one to change the adapter's functionality via open-source software easily. Users can install different firmware versions from an ever-growing on-line pool over USB. The adapter can be used for programming and debugging AVR and ARM processors, as a USB-to-RS232 converter, as a JTAG interface or as a simple I/O interface.
James Gray is Products Editor for Linux Journal.
Practical Task Scheduling Deployment
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
Free to Linux Journal readers.View Now!
|The Firebird Project's Firebird Relational Database||Jul 29, 2016|
|Stunnel Security for Oracle||Jul 28, 2016|
|SUSE LLC's SUSE Manager||Jul 21, 2016|
|My +1 Sword of Productivity||Jul 20, 2016|
|Non-Linux FOSS: Caffeine!||Jul 19, 2016|
|Murat Yener and Onur Dundar's Expert Android Studio (Wrox)||Jul 18, 2016|
- Stunnel Security for Oracle
- The Firebird Project's Firebird Relational Database
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- SUSE LLC's SUSE Manager
- Managing Linux Using Puppet
- Non-Linux FOSS: Caffeine!
- My +1 Sword of Productivity
- Google's SwiftShader Released
- SuperTuxKart 0.9.2 Released
- Doing for User Space What We Did for Kernel Space
With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide