Event Notification Using X-Detect Header; Table 9-5: Supported X-Detect Event Types; Table 9-6: Special Information Tones (Sits) Reported By The Device - AudioCodes Media Pack MP-124 User Manual

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

Table 9-6: Special Information Tones (SITs) Reported by the device

Special Description
Information
Tones (SITs)
Name
NC1 No circuit found
IC Operator intercept
VC Vacant circuit (non
registered number)
RO1 Reorder (system
busy)
SIP User's Manual

Table 9-5: Supported X-Detect Event Types

Subtype
SIT
CED
modem
voice-start
voice-end
First Tone
Frequency
Duration
(Hz)
985.2
913.8
985.2
913.8
412
Required Configuration
SITDetectorEnable = 1
UserDefinedToneDetectorEnable = 1
(IsFaxUsed ≠ 0) or (IsFaxUsed = 0, and
FaxTransportMode ≠ 0)
VxxModemTransportType = 3
EnableDSPIPMDetectors = 1
Second Tone
Frequency
Duration
(ms) (Hz)
380 1428.5
274 1370.6
380 1370.6
274 1428.5
MP-11x & MP-124
Third Tone
Frequency
Duration
(ms) (Hz) (ms)
380 1776.7 380
274 1776.7 380
274 1776.7 380
380 1776.7 380
Document #: LTRT-65412