Event Notification Using X-Detect Header - AudioCodes Mediant 600 User Manual

9.10

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
AMD
CPT
FAX
PTT
The device reports the following Special Information Tones (SIT) types:
SIT-NC
SIT-IC
SIT-VC
SIT-RO
Table 9-7: Special Information Tones (SITs) Reported by the device
Special Description
Information
Tones (SITs)
Name
No circuit found
NC1
IC Operator intercept
VC Vacant circuit (non
registered number)
RO1 Reorder (system
busy)
SIP User's Manual
Table 9-6: Supported X-Detect Event Types
Subtype
voice
automatic
silence
unknown
SIT
CED
modem
voice-start
voice-end
First Tone
Frequency
Duration
(Hz)
985.2
913.8
985.2
913.8
498
Mediant 600 & Mediant 1000
Required Configuration
EnableDSPIPMDetectors = 1
AMDTimeout = 2000 (msec)
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
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-83305