XonTel S200 Administrator's Guide
www.sahabtec.com
Page97
a-law:
A PSTN standard codec, used outside of North America, that
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, that provides adequate
voice quality and consumes 13.3kbit/s in each direction (receiving and
transmitting) of a VoIP call. GSM/UMTS 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.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
.
Note:
If you would like to use G.729, please enter your license.
6.7.3
Blacklist
Blacklist is used to block an incoming/outgoing call. If the number of
incoming/outgoing calls registered in the number blacklist, the caller will hear
the following prompt: “The number you have dialed is not in service. Please
check the number and try again”. The system will then disconnect the call.
