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You need 2 licenses to use 2 Cisco 7960s at the same time, assuming they are not calling each other at that moment.
#Fonality hud 3.6 code
when asterisk needs to transcode g729 into anything else, or the other way aroundĭuring a transcoded g729 call both directions (encoding and decoding) count as 1 license (but there could also be bugs crawling around in VA code regarding this matter)
#Fonality hud 3.6 how to
How to count the number of licences required?Ī license is required only when the codec functionality is *actually* in use For more information, please see the GPL FAQ. Therefore, if you're not planning on giving copies of Asterisk away to others, the above GPL violation statement doesn't apply to you.
#Fonality hud 3.6 download
Acceptance of the GPL is NOT required to download and use Asterisk, either by itself or in combination with the above G.729 implementation. You ARE, however, allowed to use it yourself. If you combine a static G.729 binary (non-GPL compatible licensed) with GPL software, YOU DO NOT VIOLATE THE GPL UNTIL YOU DISTRIBUTE THE COMBINATION. If you downloaded Asterisk from someone else and are using it, the person you downloaded Asterisk from must comply with the GPL. GPL Myth Note: the GPL is a distribution license, not a use license. There is a page on this wiki that talks about asterisk GPL compliance and another that talks about how to make non GPL modules for asterisk legally. The GPL violation would occur only if GPL and non-GPL compliant code is distributed together or if the module links to GPL code (use ldd to verify what it links to) or is derived from GPL code (see for US copyright law on derivative works look to your own countries' laws potentially in addition to the US laws since Digium is in the US).
The FSF, in particular, has rendered the legal opinion that it does not violate the GPL even if the modules are not GPL compatible. There is some disagreement about whether this truly does violate the GPL.
If you do choose to use this module, please be aware of the restrictions on using it without purchasing licenses, and do not advocate its use on any Digium-sponsored mailing lists (again, this could be seen as contributory infringement, if Digium resources are used to encourage its use). In short, this violates the GPL license and jeopardizes the asterisk project, specifically because the advocacy of its use may be seen by patent lawyers as contributory infringement. Please see Marks response on the user list (dated ) regarding use of G.729 codec from other sources.
In a number of countries, the use of G.729 may require a license fee and/or royalty fee. G.729 includes patents from several companies and is licensed by Sipro ( ). The G.729.1 coder is hierarchically organized: Its bit rate and the obtained quality are adjustable by simple bitstream truncation. The respective extension to G.729 is referred to as G.729.1. Recently, G.729 has been extended to provide support for wideband speech and audio coding, i.e., the transmitted acoustic frequency range is extended to 50 Hz - 7 kHz. This is also taken care of by the annex B standard.
#Fonality hud 3.6 generator
A comfort noise generator (CNG) is also there because in a communication channel, if transmission is stopped, because it's not speech, then the other side may assume that link has been cut.
#Fonality hud 3.6 update
These frames which are transmitted to update the background noise parameters are called SID frames. It also includes a DTX module which decides on updating the background noise parameters for non speech (noisy frames). The annex B of G.729 is a silence compression scheme, which has a VAD module which is used to detect voice activity, speech or non speech. This lower complexity is not free since speech quality is marginally worsened.
Also very common is G.729a which is compatible with G.729, but requires less computation. Standard G.729 operates at 8 kbit/s, but there are extensions, which provide also 6.4 kbit/s and 11.8 kbit/s rates for marginally worse and better speech quality respectively. G.729 is mostly used in Voice over IP (VoIP) applications for its low bandwidth requirement. Music or tones such as DTMF or fax tones can only be transported reliably with this codec using the RTP Payload for DTMF Digits, Telephony Tones, and Telephony Signals as specified in RFC 2833, and thus use G.711 or out-of-band methods to transport these signals. G.729 is an audio data compression algorithm for voice that compresses voice audio in chunks of 10 milliseconds. The following information is taken directly from wikipedia
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