Channel

Set by the system. Shown for information only.

Trunk Type

Default = Loop Start

Sets the analog line type. The options are:

• Ground Start: Ground Start is only supported on trunks provided by the Analog Trunk 16 expansion module. It requires that the module and the control unit are grounded. Refer to the IP Office installation manual.

• Loop Start

• Loop Start ICLID: As the system can use ICLID to route incoming calls, on analog Loop Start ICLID trunks there is a few seconds delay while ICLID is received before the call routing can be determined.

Signaling Type

Default = DTMF Dialing

Sets the signaling method used on the line. The options are: DTMF Dialing, Pulse Dialing.

Direction

Default = Both Directions

Sets the allowed direction of operation of the line. The options are: Incoming, Outgoing, Both Directions.

Flash Pulse Width

Default = 0. Range = 0 to 2550ms.

Set the time interval for the flash pulse width.

Await Dial Tone

Default = 0. Range = 0 to 25500ms.

Sets how long the system should wait before dialing out.

Echo Cancellation

Default = 16ms.

The echo cancellation should only be adjusted as high as required to remove echo problems. Setting it to a higher value than necessary can cause other distortions. Not used with external expansion module trunks. The options are (milliseconds): Off, 8, 16, 32, 64, 128.

Echo Reduction

Default = On. (ATM4Uv2 card only)

Used when impedance matching is not required but echo reduction is.

Mains Hum Filter

Default = Off.  

If mains hum interference on the lines is detected or suspected, this settings can be used to attempt to remove that interference. Useable with ATM16 trunks and IP500 ATM4U trunks. The options are: Off, 50Hz, 60Hz.

Impedance

Set the impedance used for the line. This field is only available for system locales where the default value can be changed.

The value used for Default is set by the setting System Settings > System > System > Locale. For information, see Avaya IP Office Locale Settings.

The following values are used for Automatic Impedance Matching: 600+2150nF, 600, 900+2150nF, 900, 220+820||115nF, 370+620||310nF, 270+750||150nF, 320+1050||230nF, 350+1000||210nF, 800+100||210nF.

Quiet Line

This field is only available for certain system locales (see above). The setting may be required to compensate for signal loss on long lines.

Digits to break dial tone

Default = 2. Range = Up to 3 digits.

During automatic impedance testing (see below), once the system has seized a line, it dials this digit or digits to the line. In some cases it may be necessary to use a different digit or digits. For example, if analog trunk go via another PBX system or Centrex, it will be necessary to use the external trunk dialing prefix of the remote system plus another digit, for example 92.

Automatic

Default = Yes. (ATM4Uv2 card only)

When set to Yes, the Default value is used. The value used for Default is set by the system Locale.

When set to No, the Impedance value can be manually selected from the list of possible values:

• 600

• 900 270+(750R || 150nF) and 275R + (780R || 150nF)

• 220+(820R || 120nF) and 220R+ (82R || 115nF)

• 370+(620R || 310nF)

• 320+(1050R || 230nF)

• 370+(820R || 110nF)

• 275+(780R || 115nF)

• 120+(820R || 110nF)

• 350+(1000R || 210nF)

• 200+(680R || 100nF)

• 600+2.16μF

• 900+1μF

• 900+2.16μF

• 600+1μF Global Impedance

Automatic Balance Impedance Match

These controls can be used to test the impedance of a line and to then display the best match resulting from the test. Testing should be performed with the line connected but the system otherwise idle. To start testing click Start. The system will then send a series of signals to the line and monitor the response, repeating this at each possible impedance setting. Testing can be stopped at any time by clicking Stop. When testing is complete, Manager will display the best match and ask whether that match should be used for the line. If Yes is selected, Manager will also ask whether the match should be applied to all other analog lines provided by the same analog trunk card or module.

Note that on the Analog Trunk Module (ATM16), there are four control devices, each supporting four channels. The impedance is set by the control device for all four channels under its control. Consequently, the impedance match tool only functions on lines 1, 5, 9, and 13.

Before testing, ensure that the following system settings are correctly set:

• System Settings > System > System > Locale

• System Settings > System > Telephony > Companding Law

If either needs to be changed, make the required change and save the setting to the system before proceeding with impedance matching.

Due to hardware differences, the impedance matching result will vary slightly depending on which type of trunk card or expansion module is being used.

Automatic Balance Impedance Matching, Quiet Line and Digits to break dial tone are available for the Bahrain, Egypt, French Canadian, India, Kuwait, Morocco, Oman, Pakistan, Qatar, Saudi Arabia, South Africa, Turkey, United Arab Emirates, United States and Customize locales.

Allow Analog Trunk to Trunk Connect

Default = Not selected (Off). When not enabled, users cannot transfer or forward external calls back off-switch using an analog trunk if the call was originally made or received on another analog trunk. This prevents transfers to trunks that do not support disconnect clear.

If the setting System Settings > System > Telephony > Unsupervised Analog Trunk Disconnect Handling is enabled, this setting is greyed out and trunk to trunk connections to any analog trunks are not allowed.

BCC

Default = Not selected [Brazil locale only]

A collect call is a call at the receiver's expense and by his permission. If supported by the line provider, BCC (Block Collect Call) can be used to bar collect calls.

Long CLI Line

Default = Off

The CLI signal on some analog lines can become degraded and is not then correctly detected. If you are sure that CLI is being provided but not detected, selecting this option may resolve the problem.

Modem Enabled

Default = Off

The first analog trunk in a control unit can be set to modem operation (V32 with V42 error correction). This allows the trunk to answer incoming modem calls and be used for system maintenance. When on, the trunk can only be used for analog modem calls. The default system short code *9000* can be used to toggle this setting.

For the IP500 ATM4U-V2 Trunk Card Modem, it is not required to switch the card's modem port on/off. The trunk card's V32 modem function can be accessed simply by routing a modem call to the RAS service's extension number. The modem call does not have to use the first analog trunk, instead the port remains available for voice calls.

MWI Standard

Default = None.

This setting is only displayed for ATM4U-V2 cards. When System Settings > System > Voicemail is set to Analogue MWI, change this setting to Bellcore FSK.

BCC Flash Pulse Width

Default = 100 (1000ms). Range = 0 to 255.

Brazil locale only. Sets the BCC (Block collect call) flash pulse width.

Mark

Default = 40ms. Range = 0 to 255.

Interval when DTMF signal is kept active during transmission of DTMF signals.

Space

Default = 60ms. Range = 0 to 255.

Interval of silence between DTMF signal transmissions.

Inter-Digit Pause

Default = 500ms. Range = 0 to 2550ms.

Sets the pause between digits transmitted to the line.

Ring Persistency

Default = Set according to system locale. Range = 0 to 2550ms.

The minimum duration of signal required to be recognized.

Ring Off Maximum

Default = Set according to system locale. Range = 0 to 25500ms.

The time required before signaling is regarded as ended.

Disconnect Clear

Default = On

Enables the use of disconnect clear.

If the setting System Settings > System > Telephony > Unsupervised Analog Trunk Disconnect Handling is enabled, this setting is greyed out and disconnect clear disabled.

Units

Default = 500ms. Range = 0 to 2550ms.

This time must be less than the actual disconnect time period used by the line provider by at least 150ms.

Secondary Dial Tone

Default = Off

Await time:

Default = 3000ms. Range = 0 to 25500ms.

Used when secondary dial tone (above) is selected. Sets the delay.

After n Digits

Default = 1. Range = 0 to 10.

Sets where in the dialing string, the delay for secondary dial tone, should occur.

Matching Digit

Default =8. Range = 0 to 9.

The digit which, when first matched in the dialing string, will cause secondary dial tone delay.

On

Default = 80ms. Range = 0 to 255ms.

The width of the on pulses generated during DTMF dialing.

Off

Default = 80ms. Range = 0 to 255ms.

The width of the off pulses generated during DTMF dialing.

A | D

Default = 0dB. Range =-10.0dB to +6.0dB in 0.5dB steps.

Sets the analog to digital gain applied to the signal received from the trunk by the system. To conform with the Receive Objective Loudness Rating at distances greater than 2.7km from the central office, on analog trunks a receive gain of 1.5dB must be set.

D | A

Default = 0dB. Range =-10.0dB to +6.0dB in 0.5dB steps.

Sets the digital to analog gain applied to the signal from the system to the trunk.

Voice Recording

Default = Low

Used to adjust the volume level of calls recorded by voicemail. The options are Low, Medium or High.