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V6100 and V7122 User Guide
5
Sending DTMF digits (in RTP packets) as part of the audio stream (DTMF Relay is
disabled):
This method is normally used with G.711 coders; with other Low Bit Rate (LBR)
coders the quality of the DTMF digits is reduced.
To set this mode:
‘TxDTMFOption = 0’
(1
st
to 5
th
DTMF Option = Disable)
‘RxDTMFOption = 0’ (Declare RFC 2833 in SDP = No)
‘DTMFTransportType = 2’
(DTMF Transport Type = Transparent DTMF)
The gateway is always ready to receive DTMF packets over IP, in all possible
transport modes: INFO messages, NOTIFY and RFC 2833 (in proper payload
type) or as part of the audio stream.
To exclude RFC 2833 Telephony event parameter from the gateway’s SDP, set
‘RxDTMFOption = 0’ in the
ini
file.
The following parameters affect the way the V7122 handles the DTMF digits:
TxDTMFOption and RxDTMFOption (described in
Table 48
).
RFC2833PayloadType,
MGCPDTMFDetectionPoint, DTMFDigitLength, DTMFVolume,
DTMFInterDigitInterval and DTMFTransportType (described in
1
Table 53
).
Fax & Modem Transport Modes
Fax/Modem Settings
Users can choose to use for fax, and for each modem type (V.22/V.23/Bell/V.32/V.34), one
of the following transport methods:
Fax relay mode (demodulation / remodulation, not applicable to Modem),
Bypass (using a high bit rate coder to pass the signal), or
Transparent (passing the signal in the current voice coder).
When any of the relay modes are enabled, distinction between fax and modem is not
immediately possible at the beginning of a session. The channel is therefore in ‘Answer
Tone’ mode until a decision is made. The packets sent to the network at this stage are T.38-
complaint fax relay packets.
Содержание V6100
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Страница 151: ...V6100 and V7122 User Guide 151 Figure 83 Log off Prompt 2 Click OK in the prompt the Web session is logged off...
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Страница 425: ...V6100 and V7122 User Guide 425 Figure 145 UDP2File Utility Reader s Notes...
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Страница 449: ...V6100 and V7122 User Guide 449 Figure 146 Connection Module CM Figure 147 OSN Server Figure 148 Hard Drive Module HDMX...
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