TELES VoIP Box BRI Series, Reference Manual

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5 Additional VoIP parameters
VoIPBox DSL / VoIPBox BRI – version 21.0.009 Page 111
5.10 DTMF parameters
Table 5.12 Customized parameters: VoIP DTMF
VoIP DTMF Parameters
VoipComprDtmfInband=<list>
This parameter always forced DTMF-tone inband transmission for the configured
voice codes, regardless of what is configured for: VoipDtmfTransport=. The same co-
decs can be configured as for VoipCompression=<list>
VoipDtmfFallback=<int>
If VoipDtmfTransport=3 is set and the peer does not support DTMF transmission ac-
cording to RFC 2833, the following settings apply:
2 = automatic fallback to inband
0 = automatic fallback to signaling messages (default)
VoipDtmfTransport=<int>
0 (H323) = DTMF relayed with H.225 signaling information.
0 (SIP) = DTMF relayed with SIP INFO.
1 = DTMF taken from audio stream and relayed to remote, meanwhile no rtp data is
sent.
2 (default) = DTMF and MF kept in audio stream and not relayed.
3 = DTMF taken from audio stream and relayed to remote as per RFC2833, meanwhile
rtp data with silence is sent.
4 = For SIP, SIP INFO messages will be converted to DTMF. For H.323, the H.245 user
input will be converted to DTMF.
6 (H.323 only) DTMF relayed with H245 user input.
8 DTMF taken from audiostream to be further processed in the gateway.
VoipIBSDetectDir=<int>
Enter
1
and DTMF tones (and all other inband signaling) will be detected from the Eth-
ernet side. Enter 0 for DTMF tones to be detected from the PCM side (default). DTMF
tones from the Ethernet side are transmitted to the host as ISDN dialing information
only if 1 is entered. In this case, set VoipDtmfTransport to 1 or 3.
NOTE: If
1
is entered, fax detection is not supported.
VoipMinDigitOnTime=<ms>
Defines the minimum length of DTMF tones, to ensure DTMF tone detection. Default
0.
VoipMinInterDigitTime=<ms>
Sets a time interval for DTMF tone detection. Default 0.
VoipRFC2833PayloadType=<num>
This parameter changes the DTMF payload type. The default value is 96, a common
value is 101.