Specifications

MyPBX SOHO Administrator Guide
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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, that 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.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
call is 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.
Figure 6-66
We can add a number with the type: inbound, outbound or both.
Figure 6-67