AudioCodes Mediant 1000B User Manual page 313

User's Manual
Parameter
Web: First Tx DTMF Option
CLI: first-tx-dtmf-option
[IpProfile_FirstTxDtmfOption]
Web: Second Tx DTMF Option
CLI: second-tx-dtmf-option
[IpProfile_SecondTxDtmfOption
]
Web: Rx DTMF Option
CLI: rx-dtmf-option
[IpProfile_RxDTMFOption]
Version 6.8
This parameter can also be set to the following:

[-1] = (Default) No limitation on calls.

[0] = All calls are rejected.
Note: For Gateway IP-to-IP calls, you can configure the device to
route calls to an alternative IP Group when this maximum number
of concurrent calls is reached. To do so, you need to add an
alternative routing rule in the Outbound IP Routing table that
reroutes the call to an alternative IP Group. You also need to add a
rule to the Reason for Alternative Routing table to initiate an
alternative rule for Tel-to-IP calls using cause 805.
Defines the first preferred transmit DTMF negotiation method.

[0] Not Supported = No negotiation - DTMF digits are sent
according to the parameters DTMFTransportType and
RFC2833PayloadType (for transmit and receive).

[1] INFO (Nortel) = Sends DTMF digits according to IETF
Internet-Draft draft-choudhuri-sip-info-digit-00.

[2] NOTIFY = Sends DTMF digits according to IETF Internet-
Draft draft-mahy-sipping-signaled-digits-01.

[3] INFO (Cisco) = Sends DTMF digits according to the Cisco
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.
Notes:

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).

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 this parameter.

The corresponding global parameter is TxDTMFOption.
Defines the second preferred transmit DTMF negotiation method.
For a description, see IpProfile_FirstTxDtmfOption (above).
Note: The corresponding global parameter is TxDTMFOption
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.
313
19. Coders and Profiles
Description
Mediant 1000B Gateway & SBC