By Jim Van Meggelen, Jared Smith, Leif Madsen
I used to be trying to this e-book to achieve an summary of Asterisk. As is generally the case with O' Reilly books, this one didn't disappoint. i'd certainly suggest this to anyone who's commencing to discover Asterisk.
Additionally, there are references and info necessary for carrying on with your realizing of this excellent platform. there's a lot of data which could get you began with a hands-on Asterisk adventure.
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Additional info for Asterisk: The Future of Telephony
The differences between the various codecs are due in large part to the levels of compression and quality that they offer. Generally speaking, the more compression that's required, the more work the DSP must do to code or decode the signal. Uncompressed codecs, therefore, put far less strain on the CPU (but require more network bandwidth). Codec selection must strike a balance between bandwidth and processor usage. Central Processing Unit (and Floating Point Unit) A CPU is comprised of several components, one of which is the Floating Point Unit (FPU).
Computer power supplies The power supply you select for your system will play a vital role in the stability of the entire platform. Asterisk is not a particularly power-hungry application, but anything relating to multimedia (whether it be telephony, professional audio, video, or the like) is generally sensitive to power quality. This oft-neglected component can turn an otherwise top-quality system into a poor performer. By the same token, a top-notch power supply might enable an otherwise cheap PC to perform like a champ.
As for a video card, you may not need one at allcertainly Asterisk does not require one. It has traditionally been the more value-priced motherboards that have had these components on-board, and these board designs often make compromises to keep down the costs. If possible, install an external modem. If you must have an internal modem, you will need to ensure that it is not a so-called "Win-modem"it must be a completely self-sufficient unit (note that these are very difficult, if not impossible, to find).
Asterisk: The Future of Telephony by Jim Van Meggelen, Jared Smith, Leif Madsen