AudioCodes Mediant 500 MSBR, Руководство пользователя

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User's Manual 436 Document #: LTRT-10375
Mediant 500 MSBR
Parameter Description
format.

[4] RFC 2833 = (Default) The device:

negotiates RFC 2833 payload type using local and
remote SDPs.

sends DTMF packets using RFC 2833 payload type
according to the payload type in the received SDP.

expects to receive RFC 2833 packets with the same
payload type as configured by the parameter
RFC2833PayloadType.

removes DTMF digits in transparent mode (as part of the
voice stream).

[5] INFO (Korea) = Sends DTMF digits according to the Korea
Telecom format.
Note:

When out-of-band DTMF transfer is used ([1], [2], [3], or [5]),
the DTMFTransportType parameter is automatically set to 0
(DTMF digits are removed from the RTP stream).

Digital interfaces: If an ISDN phone user presses digits (e.g.,
for interactive voice response / IVR applications such as
retrieving voice mail messages), ISDN Information messages
received by the device for each digit are sent in the voice
channel to the IP network as DTMF signals, according to the
settings of the parameter.

The corresponding global parameter is FirstTxDTMFOption.
Second Tx DTMF Option
second-tx-dtmf-option
[IpProfile_SecondTxDtmfOption]
Defines the second preferred transmit DTMF negotiation
method. For a description, see IpProfile_FirstTxDtmfOption
(above).
Note: The corresponding global parameter is
SecondTxDTMFOption.
Rx DTMF Option
rx-dtmf-option
[IpProfile_RxDTMFOption]
Enables the device to declare the RFC 2833 'telephony-event'
parameter in the SDP.

[0] Not Supported

[3] Supported (default)
The device is always receptive to RFC 2833 DTMF relay
packets. Thus, it is always correct to include the 'telephony-
event' parameter by default in the SDP. However, some devices
use the absence of the 'telephony-event' in the SDP to decide to
send DTMF digits in-band using G.711 coder. If this is the case,
set the parameter to 0.
Note: The corresponding global parameter is RxDTMFOption.
Gateway Fax and Modem
Fax Signaling Method
fax-sig-method
[IpProfile_IsFaxUsed]
Defines the SIP signaling method for establishing and
transmitting a fax session when the device detects a fax.

[0] No Fax = (Default) No fax negotiation using SIP signaling.
The fax transport method is according to the
FaxTransportMode parameter.

[1] T.38 Relay = Initiates T.38 fax relay.

[2] G.711 Transport = Initiates fax/modem using the coder
G.711 A-law/Mu-law with adaptations (see Note below).

[3] Fax Fallback = Initiates T.38 fax relay. If the T.38
negotiation fails, the device re-initiates a fax session using