Event Notification Using X-Detect Header - AudioCodes Mediant 1000B User Manual

User's Manual
44.4

Event Notification using X-Detect Header

The device can notify a remote party of the occurrence (or detection) of certain events in
the media stream. The device detects events and notifies their occurrence, using the SIP
X-Detect message header and only when establishing a SIP dialog.
Note:
The table below lists the supported event types (and subtypes) and the corresponding
device configurations that you need to do:
Events Type Subtype
AMD
automatic
silence
unknown
CPT SIT-NC
SIT-IC
SIT-VC
SIT-RO
Reorder
Ringtone
FAX
modem
PTT voice-start
voice-end
The device can detect and report the following Special Information Tones (SIT) types from
the PSTN:

SIT-NC (No Circuit found)

SIT-IC (Operator Intercept)

SIT-VC (Vacant Circuit - non-registered number)

SIT-RO (Reorder - System Busy)
There are additional three SIT tones that are detected as one of the above SIT tones:

The NC* SIT tone is detected as NC

The RO* SIT tone is detected as RO

The IO* SIT tone is detected as VC
Version 6.8
This feature is applicable only to the Gateway application.
Table 44-6: Supported X-Detect Event Types
voice EnableDSPIPMDetectors = 1
AMDTimeout = 2000 (msec)
For AMD beep detection, AMDBeepDetectionMode = 1 or 2
beep
SITDetectorEnable = 1
UserDefinedToneDetectorEnable = 1
Notes:

Ensure that the CPT file is configured with the required tone
type.
Busy

On beep detection, a SIP INFO message is sent with type
AMD/CPT and subtype beep.

The beep detection must be started using regular X-detect
beep
extension, with AMD or CPT request.
(IsFaxUsed ≠ 0) or (IsFaxUsed = 0, and FaxTransportMode ≠ 0)
CED
VxxModemTransportType = 3
EnableDSPIPMDetectors = 1
44. Reporting Information to External Party
Required Configuration
671 Mediant 1000B Gateway & SBC