Black Box FX160A manual Disconnect Supervision Polarity Reversal/Clear Forwarding

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PHONE LINE MANAGER 16 X 4

12.2 Disconnect Supervision: Polarity Reversal/Clear Forwarding

Some Central Office switches signal the unit when the remote party in an outside call has disconnected from the line. For example, if an outside call is placed on hold and during that time the outside party hangs up, the system will know to release the line. The Phone Line Manager 16 x 4 supports two types of signaling. With Clear Forward signaling, used mostly in the USA, the Central Office removes the battery feed from the Tip and Ring lines to signal that the remote party has disconnected. With Polarity Reversal signaling, the Central office reverses the polarity of the Tip and Ring signals to inform the unit when a connection has been completed and when it has been disconnected. If a disconnect signal is detected during an outside line conversation, the extension hears special tone (on for 1 second, then 2 brief beeps, then the system dial tone) to indicate that the call has been disconnected.

If you are being inappropriately disconnected from outside calls, disable both of these parameters.

To Enable Polarity Reversal Detection:

1.In programming mode, enter 7844. Pause for confirmation tone. Hang up or continue with programming.

To Disable Polarity Reversal Detection:

1.In programming mode, enter 7845. Pause for confirmation tone. Hang up or continue with programming.

When Polarity Reversal detection is enabled, the Phone Line Manager 16 x 4 software will only store the details of an outgoing call into Call History memory if the first polarity reversal is received, indicating that the connection to the called party is made. Thus if an outgoing call is made and the called phone rings for longer than 20 seconds but never answers, the call is not recorded.

To Enable Clear Forward Detection:

1.In programming mode, enter 7820. Pause for confirmation tone. Hang up or continue with programming.

To Disable Clear Forward Detection:

1.In programming mode, enter 7821. Pause for confirmation tone. Hang up or continue with programming.

There are 4 DIP switches on the Trunk Board of the Phone Line Manager 16 x 4 which must be set in the “Up” or “Off” position to allow Polarity Reversal to be detected or in the “Down” or “On” position to allow Clear Forwarding to be detected.

If the DIP switches on the Trunk Board are set differently from the system software setting, improper operation will result.

If the System Manager inadvertently configures the system to detect both the Polarity Reversal and the Clear Forwarding signals, the system software will look only for the Polarity Reversal signal.

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Contents Phone Line Manager 16 x Mexicanas Electrical Safety Statement Phone Line Manager 16 X Contents Contents Phone Line Manager 16 X Specifications Introduction Preparing to Program Choosing the Programming Mode-Automatic or PasswordDesignate an Extension for System Manager Basic Features Factory-Default SettingsAdvanced System Features Programming TipsExtension Features for all extensions Outside Line FeaturesChanging the Programming-Mode Password Entering the Programming-Mode PasswordResetting the System to Default Values When You Reset the System to Default ValuesChoices When Programming the Extensions Configuring the ExtensionsWhich special features do you want to allow the extension? What type of phone will be connected to the extension?Programming the Extensions Automatic Outside Door-Phone-Operation Details Call Forwarding/Call Follow Me To disable the Call Follow Me functionRequire Star Key Before User Programming To require a * to be entered before a 4 or aIntroduction Central Office Lines Incoming CallsChoices in Handling Incoming Calls Defining the Standard Incoming Line Extension Numbers Entering the Private Incoming Lists Day Night Central Office Lines Programming Choices in Configuring Central Office CO LinesDo you want to dial 9 or 0 to access an outside line ? Dialing 9 to Access Outside LinesTo access an outside line by dialing Programming Outside LinesEnter Enter Line # Code Fax Extn Auto-Attendant Disa About Disa and Direct Caller Access to ExtensionsRecording a Voice Announcement 1xxEnabling the Voice Announcement Setting the Length of the Disa Input TimeWhat Happens after the Disa Entry Multiple Fax Extensions What Happens If There is No Disa EntryTo ring the Operator if there is No Disa entry To ring the fax extension if there is No Disa entryDefining Outgoing Call Groups About Outgoing Call GroupsAssigning Extensions to an Outgoing Call Group Enable Direct Outward Station Access Dosa Direct Outward Station Access DosaEntering the Dosa Password To Enable Hunt Groups To Enable the Use of the Four Different Hunt GroupsTo Disable Hunt Groups Hunt GroupsThen dial 05 06 06 Then dial 01 03 04Then dial 12 13 14 Then dial 00 00 00Automatic Day/Night Mode Switching Times Automatic Day/Night Mode SwitchingTo enable automatic switching between modes To disable automatic switching between modesPhone Line Manager 16 X Tone- or Pulse-Dialing Details Central Office Lines Advanced TopicsTo Disable Polarity Reversal Detection To Enable Polarity Reversal DetectionTo Enable Clear Forward Detection To Disable Clear Forward DetectionMetering Pulse Frequency Metering Pulse DetectionCaller ID Phone Line Manager 16 X Exclusive Answering Machine Privilege Rollover Extensions Advanced TopicsRollover of Unattached Calls Rollover of Intercom CallsTo transfer unattached calls to the Operator Simplified Voice-Mail Interface Voice-Mail Unit InterfaceMSG Button on a Key Phone About Call Barring Call Barring Toll RestrictionCall-Barring Toll-Restriction Details Sample Disallow Table Filling the Call-Barring Allow and Disallow TablesTo fill a Call-Barring Allow or Disallow Table Assigning Extensions to Tables Sample Allow TableRestrict Calls at Night Password to Override Call BarringTo enter a speed-dial number Assigning Speed-Dial NumbersDial-Tone Detection Clear Speed-Dialing and Call-Barring TablesTo display the time in the 12-hour mode Setting the System ClockTo display the time in the 24-hour mode System Clock Date and TimeOutgoing-Call Records and Histories Automatic Call-History Retrieval Program Output the Call History After Each Outgoing CallFormats for the Call-History Records Connection to a Computer or a Printer To enable the System Mode of the RS-232C Port 18.1 RS-232C Port-Choosing the Operating ModeTo enable the Features Mode of the RS-232C Port Interfacing the Phone Line Manager 16 x 4 to a ComputerPhone Line Manager 16 x 4 Configuration Program Computer Aided Telephony CAT Software To enable the normal mode of Disa operationReport Disa Digits to the CAT Application To report incoming Disa digits to the CAT ApplicationDelay After Each RS232C Line Delay After Each RS-232C CharacterSystem Timing Parameters About System Timing ParametersReminder Feature Timing Switchhook Flash TimingPulse-Dialing Timing Outside Line Guard TimeTone Dtmf Dialing Timing Switchhook Timing to Outside Line Rollover After Call to Extension Rollover on Standard Incoming Calls TimingOn Hook Time Multiple Ringing Time Speed-Dialing Delay TimeParked Calls Timing Park Drive Lawrence, PA 15055-1018 724-746-5500 Fax
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