AudioCodes Mediant 800 - DTMF and Hook-Flash Parameters

CHAPTER72 Configuration Parameters Reference
Mediant 800 Gateway & E-SBC | User's Manual
Parameter Description
configure voip > media fax-modem >
SPRT-transport-channel3-max-payload-
size
[V1501SPRTTransportChannel3MaxPayloadSize]
The range is 140 to 256. The default is
140.
DTMF and Hook-Flash Parameters
The DTMF and hook-flash parameters are described in the table below.
Table 72-38:DTMF and Hook-Flash Parameters
Parameter Description
Hook-Flash Parameters
'Hook-Flash Code'
configure voip > gateway
dtmf-supp-service supp-
service-settings > hook-
flash-code
[HookFlashCode]
Analog interfaces: Defines the digit pattern that
when received from the Tel side, indicates a Hook
Flash event.
Digital interfaces: Defines the digit pattern used by
the PBX to indicate a Hook Flash event. When this
pattern is detected from the Tel side, the device
responds as if a Hook Flash event has occurred and
sends a SIP INFO message if the
HookFlashOption parameter is set to 1, 5, 6, or 7
(indicating a Hook Flash). If configured and a Hook
Flash indication is received from the IP side, the
device generates this pattern to the Tel side.
The valid range is a 25-character string. The default
is a null string.
Note: The parameter can also be configured in a Tel
Profile.
'Hook-Flash Option'
configure voip > gateway
dtmf-supp-service dtmf-and-
dialing > hook-flash-option
[HookFlashOption]
Defines the hook-flash transport type (i.e., method
by which hook-flash is sent and received).
Digital interfaces: The feature is applicable only if
the HookFlashCode parameter is configured.
■ [0] Not Supported = (Default) Hook-Flash
indication is not sent.
■ [1] INFO = Sends proprietary INFO message
(Broadsoft) with Hook-Flash indication.
Digital interfaces: The device sends the INFO
message as follows:
Content-Type: application/broadsoft;
version=1.0
Content-Length: 17
event flashhook
■ [4] RFC 2833 = This option is currently not
supported for digital interfaces.
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