Event Notification Using X-Detect Header - AudioCodes Mediant 3000 User Manual

SIP User's Manual
4. The Application server now sends its message to the answering message.
If the device detects voice and not an answering machine, the SIP INFO message includes:
Type= AMD
SubType= VOICE
If the device detects silence, the SIP INFO message includes the SubType SILENT.
9.7

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 SIP X-Detect 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
CPT
FAX
PTT
The device reports the following Special Information Tones (SIT) types:
SIT-NC
SIT-IC
SIT-VC
SIT-RO
Version 5.8
Table 9-4: Supported X-Detect Event Types
Subtype
SIT
CED
modem
voice-start
voice-end
469
9. IP Telephony Capabilities
Required Configuration
SITDetectorEnable = 1
UserDefinedToneDetectorEnable = 1
(IsFaxUsed ≠ 0) or (IsFaxUsed = 0, and
FaxTransportMode ≠ 0)
VxxModemTransportType = 3
EnableDSPIPMDetectors = 1
September 2009