PLANET VGW-400FO - Manual (Page 41)

4-Port SIP Internet Telephony Gateway
VGW-400 Series
5.2 Audio
Item Explanation
Codec 1~5 The preference codec priority
G.711u Payload Size G.711 u-Law payload size
G.711a Payload Size G.711 A-law payload size
G.729 Payload Size G.729A payload size
G.723.1 Payload Size: G.723.1 payload size
Bit Rate
G.723.1 bit rate used
5.3K bit rate is used
6.3K bit rate is used
Codec Priority
Selection order to match the remotely SDP for codec selection.
‹ Local SDP Order: Use local SDP order to match codec
‹ Remote SDP Order: Use Remote SDP order to match
codec
DTMF Relay
In-Band DTMF:
Use inband DTMF instead of out of band.
RFC 2833(fall back to SIP-INFO):
Use RFC 2833 if the SDP negotiation could be done. Or use
SIP INFO for DTMF relay.
SIP INFO:
Use SIP-INFO DTMF relay
RFC 2833(fall back to Inband):
Use RFC 2833 if the SDP negotiation could be done. Or use
inband DTMF transmission.
Silence Suppression
Enable: Start the voice activity (silence) detection when
detecting silence for 60 seconds. It will hang up the call (For
FXO use)
41