AudioCodes Mediant 500 MSBR User Manual Download

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Version 7.2

471

Mediant 500 MSBR

User's Manual

25. Digital PSTN

TelProfile_IsFaxUsed, TelProfile_JitterBufMinDelay,
TelProfile_JitterBufOptFactor, TelProfile_IPDiffServ,
TelProfile_SigIPDiffServ, TelProfile_DtmfVolume,
TelProfile_InputGain, TelProfile_VoiceVolume,
TelProfile_EnableReversePolarity,
TelProfile_EnableCurrentDisconnect,
TelProfile_EnableDigitDelivery, TelProfile_EnableEC,
TelProfile_MWIAnalog, TelProfile_MWIDisplay,
TelProfile_FlashHookPeriod, TelProfile_EnableEarlyMedia,
TelProfile_ProgressIndicator2IP;
TelProfile_1 = voice,$$,1,$$,$$,$$,$$,$$,$$,$$
TelProfile_2 = data,$$,2,$$,$$,$$,$$,$$,$$,$$
[\TelProfile]

25.5.1.1 DSP Pattern Detector

For TDM tunneling applications, you can use the DSP pattern detector feature to initiate
the echo canceller at call start. The device can be configured to support detection of a
specific one-byte idle data pattern transmitted over digital E1/T1 timeslots. The device can
be configured to detect up to four different one-byte data patterns. When the defined idle
data pattern is detected, the channel resets its echo canceller.



To configure DSP pattern detector:

In the DSP Settings page (

Setup

menu >

Signaling & Media

tab >

Media

folder >

DSP Settings

), do the following:

From the 'IPMedia Detectors' drop-down list (EnableDSPIPMDetectors), select

Enable

From the 'Enable Pattern Detector' drop-down list (EnablePatternDetector), select

Enable

Configure the number (e.g., 5) of consecutive patterns to trigger the pattern detection
event, using the ini file parameter, PDThreshold.

Configure the patterns that can be detected by the Pattern Detector, using the ini file
parameter, PDPattern. For example:

PDPattern = 84, 85, 212, 213 ; for idle patterns 54, 55, D4
and D5

25.5.2 Configuring Private Wire Interworking

You can configure the device to interwork in a private wire system, where one side is IP
(SIP) based and the other side is legacy, digital PSTN (E1/T1 CAS) based.

Private wire is a generic term used to describe static point-to-point voice connections
between two locations. Private Wires are typically used by a number of communities such
as military, railways, emergency services, and financial services. Historically, private wire
services were achieved by running direct private connections (telephone cables) between
offices in the same building. In private wire services, dialing is unnecessary and there is a
direct, "always on" and immediate connection.

Trading turret systems are also part of private wire services. A trading turret or dealer
board is a specialized telephony key system that is generally used by financial traders on
their trading desk. Trading turrets enable users to prioritize incoming call activity from
customers or counter-parties and make calls to these same people instantaneously by
pushing a single button to access dedicated point-to-point telephone lines (commonly
called Ringdown circuits). No dialing is necessary; the user simply picks up the handset or
pushes a button and a dedicated line is seized. Thus, many turrets have multiple handsets

AudioCodes Mediant 500 MSBR, User Manual

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