User's Manual 470 Document #: LTRT-68822
Mediant 2000
3fd61009 0e2f3cc5
(4923 30) h323-disconnect-cause = 22 (0x16)
(4923 27) h323-call-type = VOIP
(4923 26) h323-call-origin = Originate
(4923 24) h323-conf-id = 02102944 600a1899 3fd61009 0e2f3cc5
40.4 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 supported event types (and subtypes) and the corresponding device
configurations, if required:
Supported X-Detect Event Types
Events Type Subtype Required Configuration
AMD voice
automatic
silence
unknown
beep
EnableDSPIPMDetectors = 1
AMDTimeout = 2000 (msec)
For AMD beep detection, AMDBeepDetectionMode
= 1 or 2
CPT SIT-NC
SIT-IC
SIT-VC
SIT-RO
Busy
Reorder
Ringtone
beep
SITDetectorEnable = 1
UserDefinedToneDetectorEnable = 1
Notes:
Ensure that the CPT file is configured with the
required tone type.
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 extension, with AMD or CPT request.
FAX CED (IsFaxUsed ≠ 0) or (IsFaxUsed = 0, and
FaxTransportMode ≠ 0)
modem VxxModemTransportType = 3
PTT voice-start
voice-end
EnableDSPIPMDetectors = 1
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