Draytek Vigor IPPBX 2820 Series User Manual page 95

Vigor ippbx 2820 series
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MSN Alias
After finishing all the settings here, please click OK to save the configuration.
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The vigor router allows users to switch the function of ISDN1/ISDN2 port between TE or S0
mode. Please use the drop down list to choose the one you want.
Choose ISDN-TE and click the number link for that port, you will see the following page.
Available settings are explained as follows:
Item
Call Feature
Codecs
VigorIPPBX 2820 Series User's Guide
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Payload Type (rfc2833) - Choose a number from 96 to
127, the default value was 101. This setting is available for
the OutBand (RFC2833) mode.
This is ISDN MSN number, please refer ISDN setting.
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Description
Session Timer- Check the box to enable the function. In the
limited time that you set in this field, if there is no response,
the connecting call will be closed automatically.
Prefer Codec - Select one of five codecs as the default for
your VoIP calls. The codec used for each call will be
negotiated with the peer party before each session, and so
may not be your default choice. The default codec is
G.729A/B; it occupies little bandwidth while maintaining
good voice quality.
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