AudioCodes MediaPack 114 Uživatelský manuál stáhnout pdf (Strana 318)

SIP User's Manual 318 Document #: LTRT-65411

MediaPack Series

• TxDTMFOption = 2 (ini file); '1

to 5

Tx DTMF Option' field = 'NOTIFY' (Web

interface -- refer to ''DTMF & Dialing Parameters'' on page 125)

Note that in this mod

e, DTMF digits are erased from the audio stream

(DTMFTransportType is automatically set to 0 ('DTMF Transport Type' field = 'DTMF

Mute' -- Web interface)].

 Using RFC 2833 relay with Payload type negotiation: DTMF digits are carried to

the remote side as part of the RTP stream in accordance with RFC 2833 standard. To

enable this mode, define the following:

• RxDTMFOption = 3 (ini file); 'Declare RFC 2833 in SDP' field = 'Yes' (Web

interface -- refer to ''DTMF & Dialing Parameters'' on page 125)

• TxDTMFO

ption = 4 (ini file); '1

to 5

Tx DTMF Option' field = 'RFC 2833' (Web

interface -- refer to ''DTMF & Dialing Parameters'' on page 125)

Note that to set the RFC 2

833 payload type with a different value (other than its

default, 96) configure the RFC2833PayloadType (RFC 2833 Payload Type)

parameter. The device negotiates the RFC 2833 payload type using local and remote

SDP and sends packets using the payload type from the received SDP. The device

expects to receive RFC 2833 packets with the same payload type as configured by the

RFC2833PayloadType parameter. If the remote side doesn’t include ‘telephony-event’

in its SDP, the device sends DTMF digits in transparent mode (as part of the voice

stream).

 Sending DTMF digits (in RTP packets) as part of the audio stream (DTMF Relay

is disabled): This method is typically used with G.711 coders; with other low-bit rate

(LBR) coders, the quality of the DTMF digits is reduced. To enable this mode, define

the following:

• RxDTMFOption = 0 (ini file); 'Declare RFC 2833 in SDP' field = 'No' (Web

interface -- refer to ''DTMF & Dialing Parameters'' on page 125)

• TxDTMFO

ption = 0 (ini file); '1

to 5

Tx DTMF Option' field = 'Disable' (Web

interface -- refer to ''DTMF & Dialing Parameters'' on page 125)

• DTMFT

ransportType = 2 (DTMF Transport Type = Transparent DTMF)

 Using INFO message according to Korea mode: DTMF digits are carried to the

remote side in INFO messages. To enable this mode, define the following:

• RxDTMFOption = 0 (ini file); 'Declare RFC 2833 in SDP' field = 'No' (Web

interface -- refer to ''DTMF & Dialing Parameters'' on page 125)

• TxDTMFO

ption = 3 (ini file); '1

to 5

Tx DTMF Option' field = 'INFO (Korea)' (Web

interface -- refer to ''DTMF & Dialing Parameters'' on page 125)

Note that in this mod

e, DTMF digits are erased from the audio stream

(DTMFTransportType is automatically set to 0 (DTMF Mute)).

Notes:

• The device 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 device's

SDP, set RxDTMFOption to 0 in the ini file.

The following parameters affect the way the device handles the DTMF digits:

 TxDTMFOption, RxDTMFOption, and RFC2833PayloadType (described in ''DTMF &

Dialing Parameters'' on page 125)

 MGCP

DTMFDetectionPoint, DTMFVolume, DTMFTransportType, DTMFDigitLength,

and DTMFInterDigitInterval (refer to ''Channel Parameters'' on page 298)

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