MyPBX Standard V6/V7 Administrator's Guide
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6.7.2 IAX Settings
Figure 6-67 IAX Settings
1) General
·Bind Port
Port used for IAX2 registrations. Default is 4569.
·Bandwidth
Low/medium/high with this option you can control which codec to be used.
·Min Registration Time
Minimum duration (in seconds) of an IAX2 registration. The default is 60
seconds.
·Max Registration Time
Maximum duration (in seconds) of an IAX2 registration. The default is 1200
seconds.
2) Codecs
A codec is a compression or decompression algorithm 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 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.