Fxo Supplementary Services; Event Notification Using X-Detect Header; Table 7-1: Supported X-Detect Event Types - AudioCodes MediaPack MP-124 User Manual

7.3.2.4

FXO Supplementary Services

The FXO supplementary services include the following:
Hold / Transfer toward the Tel side: The ini file parameter LineTransferMode must
be set to 0 (default). If the FXO receives a hook-flash from the IP side (using out-of-
band or RFC 2833), the device sends the hook-flash to the Tel side by performing one
of the following:
•
Performing a hook flash (i.e., on-hook and off-hook)
•
Sending a hook-flash code (defined by the ini file parameter HookFlashCode)
The PBX may generate a dial tone that is sent to the IP, and the IP side may dial digits
of a new destination.
Blind Transfer to the Tel side: A blind transfer is one in which the transferring phone
connects the caller to a destination line before ringback begins. The ini file parameter
LineTransferMode must be set to 1.
The blind transfer call process is as follows:
•
FXO receives a REFER request from the IP side
•
FXO sends a hook-flash to the PBX, dials the digits (that are received in the
Refer-To header), and then drops the line (on-hook). Note that the time between
flash to dial is according to the WaitForDialTime parameter.
•
PBX performs the transfer internally
Hold / Transfer toward the IP side: The FXO device doesn't initiate hold / transfer as
a response to input from the Tel side. If the FXO receives a REFER request (with or
without replaces), it generates a new INVITE according to the Refer-To header.
7.4

Event Notification using X-Detect Header

The device supports the sending of notifications to a remote party notifying the occurrence
(or detection) of certain events on the media stream. Event detection and notifications is
performed using the X-Detect SIP message header, and only when establishing a SIP
dialog.
For supporting some events, certain device configurations need to be performed. The table
below lists the support event types (and subtypes) and the corresponding device
configurations, if required:
Events
Type Subtype
CPT SIT
FAX CED
modem
PTT voice-start
voice-end
SIP User's Manual

Table 7-1: Supported X-Detect Event Types

SITDetectorEnable = 1
UserDefinedToneDetectorEnable = 1
(IsFaxUsed ≠ 0) or (IsFaxUsed = 0, and FaxTransportMode ≠ 0)
VxxModemTransportType = 3
EnableDSPIPMDetectors = 1
328
Required Configuration
Document #: LTRT-65410
MediaPack Series