One-Channel GSM VoIP Gateway
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Relay Proxy
Relay proxy is a proprietary NAT traversal technology. Please consult your service
provider for more information.
Currently, the following 3 kinds of packaging mechanism are supported:
Mode 1: The media uses UDP packets and (or) encrypt with multiple UDP port;
Mode 2: The media uses UDP packets and (or) encrypt with single UDP port;
Mode 3: The media uses TCP packets and (or) encrypt (UDP over TCP).
3.4.5 Codec Preference
Click on “
Media Settings
” in the “Call Setting” menu and click
Audio Codec Preference
to
access the parameters.
Codec Preference
allows a user to select the codes to be used and its priority for a voice
call.
