![Yeastar Technology MyPBX U100 Скачать руководство пользователя страница 120](http://html2.mh-extra.com/html/yeastar-technology/mypbx-u100/mypbx-u100_administrators-manual_3247981120.webp)
MyPBX U100/U200 Administrator Guide
120/195
A codec is a compression or decompression algorithm that used in the
transmission of voice packets over a network or the Internet.
u-law: A PSTN standard codec, used in North America, which provides very
good voice quality and consumes 64kbit/s in each direction (receiving and
transmitting) of a VoIP call.
a-law: A PSTN standard codec, used outside of North America, which provides
very good voice quality and consumes 64kbit/s in each direction (receiving and
transmitting) of a VoIP call.
GSM: A wireless standard codec, used worldwide, which provides adequate
voice quality and consumes 13.3kbit/s in each direction (receiving and
transmitting) of a VoIP call. GSM is supported by many VoIP phones.
SPEEX: Speex is an Open Source/Free Software patent-free audio compression
format designed for speech. The Speex Project aims to lower the barrier of entry
for voice applications by providing a free alternative to expensive proprietary
speech codecs. Moreover, Speex is well-adapted to Internet applications and
provides useful features that are not present in most other codecs.
G.722: G.722 is a wideband speech coding algorithms which supports the bit
rate of 64, 56 and 48kbps wideband. It’s a broadband voice encoding of G
series.
G.726: A PSTN codec, used worldwide, that provides good voice quality and
consumes 32kbit/s in each direction (receiving and transmitting) of a VoIP call.
G.726 is supported by some VoIP phones.
ADPCM, G.729A, H261, H263, H263p, H264, MPEG4.
Note: If you would like to use G.729, please enter your license.
4) QoS
Figure 6-62
QoS (Quality of Service) is a major issue in VoIP implementations. The issue is
how to guarantee that packet traffic for a voice or other media connection will
not be delayed or dropped due interference from other lower priority traffic.
Содержание MyPBX U100
Страница 1: ...MyPBX U100 U200 Administrator Guide Version 15 19 0 23 Yeastar Information Technology Co Ltd...
Страница 12: ...MyPBX U100 U200 Administrator Guide 12 195 Figure 3 4 Figure 3 5...
Страница 92: ...MyPBX U100 U200 Administrator Guide 92 195 Figure 6 43 Queue Name A name for the Queue...
Страница 144: ...MyPBX U100 U200 Administrator Guide 144 195 Figure 10 5...
Страница 154: ...MyPBX U100 U200 Administrator Guide 154 195 FigureE 2 Step3 Finish...
Страница 160: ...MyPBX U100 U200 Administrator Guide 160 195 Figure G 3 APPENDIX H How to Use BLF Key to...
Страница 177: ...MyPBX U100 U200 Administrator Guide 177 195 Figure I 27 APPENDIX J How to Set Up Auto...
Страница 180: ...MyPBX U100 U200 Administrator Guide 180 195 Figure J 5...