Table 9-4: Supported X-Detect Event Types; Table 9-5: Special Information Tones (Sits) Reported By The Device - AudioCodes Mediant 2000 User Manual

SIP User's Manual
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 9-5: 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)
For example:
INFO sip:5001@10.33.2.36 SIP/2.0
Via: SIP/2.0/UDP 10.33.45.65;branch=z9hG4bKac2042168670
Max-Forwards: 70
From: <sip:5000@10.33.45.65;user=phone>;tag=1c1915542705
To: <sip:5001@10.33.2.36;user=phone>;tag=WQJNIDDPCOKAPIDSCOTG
Call-ID: AIFHPETLLMVVFWPDXUHD@10.33.2.36
CSeq: 1 INFO
Contact: <sip:2206@10.33.45.65>
Supported: em,timer,replaces,path,resource-priority
Version 5.8

Table 9-4: 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
421
9. IP Telephony Capabilities
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
October 2009