MWG1000 Series User Manual
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Figure 3.10.1.3 codecs
If you want to use codec G729, we recommend buying a license key and
input it here.
3.10.2 IAX setting
IAX is the Internal Asterisk Exchange protocol, you can connect to MWG1004
or register IAX trunk to another IAX server. It’s supported by the asterisk-
based IPPBX.
Figure 3.10.2 IAX setting