Event Notification Using X-Detect Header - AudioCodes Mediant 800B User Manual

User's Manual
49.4

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
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
The device can map these SIT tones to a Q.850 cause and then map them to SIP 5xx/4xx
responses,
SITQ850CauseForIC, SITQ850CauseForVC, and SITQ850CauseForRO.
Version 6.8
This feature is applicable only to the Gateway application (not SBC).
Table 49-6: Supported X-Detect Event Types
SITDetectorEnable = 1
UserDefinedToneDetectorEnable = 1
Notes:

Ensure that the CPT file is configured with the required tone
type.
Busy
(IsFaxUsed ≠ 0) or (IsFaxUsed = 0, and FaxTransportMode ≠ 0)
CED
VxxModemTransportType = 3
EnableDSPIPMDetectors = 1
using the parameters
49. Reporting Information to External Party
Required Configuration
SITQ850Cause,
691 Mediant 800B Gateway and E-SBC
SITQ850CauseForNC,