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General| Brand | Rauland-Borg |
|---|---|
| Model | TC4 |
| Category | PBX |
| Language | English |
Primary diagnostic for TCIV system hardware functions using a display phone.
Step-by-step guide to initiating and using the #73 Hardware I/O Diagnostic.
Explanation of the Link Number display field in the #73 diagnostic.
Explanation of the VCM Intercom display field in the #73 diagnostic.
Explanation of the Hook/Call-in status display field in the #73 diagnostic.
Explanation of the Active Lines display field in the #73 diagnostic.
Explanation of the keypad functions used during the #73 diagnostic.
Important notes and considerations for using the #73 diagnostic.
Visual representation of the keypad layout for the #73 diagnostic.
Overview of performing voltage measurements on flat-cable buses using the #73 diagnostic.
Step-by-step guide for measuring voltages on flat-cable pins and buses.
Testing different line types using I/O hardware diagnostic.
Recommendation to practice procedures on a known good system.
Procedure for testing Central Office and PBX trunks.
Specific issues and troubleshooting for Central Office trunks.
Identifying open or grounded speaker lines using VCM Speaker Sense.
Step-by-step procedure for testing speaker functionality via #73 diagnostic.
Information on hexadecimal equivalents for HT display field.
Procedure for quickly testing a series of phone lines.
Alternative method for testing phone lines using two phones on a link.
Detecting call-in switch status and distinguishing call-in types.
Step-by-step procedure for testing call-in switch functionality.
Test to prevent new system activity and adjust call-in sensitivity.
Detailed steps for adjusting the RP2 sensitivity control.
Checking all LLM functions including off-hook, audio, DC, and ringing.
Step-by-step procedure for testing LLM line and link functionality.
Procedures for setting up a computer for system analysis and troubleshooting.
Using a computer and serial port for system analysis.
Warning regarding RS232 voltage requirements for TCIV.
Step-by-step guide for connecting and configuring a computer for diagnostics.
Overview of the TCIV's built-in monitor program commands.
Reference for various serial port monitor commands used for diagnostics.
Identifying architectural number and DTMF messages of phone lines.
Logging staff phone call-ins and call-in types.
Monitoring phone connections, tones, and console keystrokes.
Steps to enable and interpret keystroke monitoring data.
Quick reference for troubleshooting symptoms and procedures.
Tips for efficient troubleshooting and system maintenance.
Step-by-step procedures to troubleshoot system lock-ups.
Troubleshooting steps for issues preventing system programming.
Steps to troubleshoot why a phone fails to ring.
Steps to troubleshoot issues with time tones not functioning.
Steps to troubleshoot issues with the all-page system.
Troubleshooting steps for phones ringing back after hanging up.
Troubleshooting steps for intermittent system misdialing or access issues.
Troubleshooting steps for noisy or dead talk paths.
Troubleshooting steps to address crosstalk issues on phone lines.
Explains TCIV behavior when attendant lines are busy.
Troubleshooting steps for false call-ins after specific tones.
Procedures to identify and resolve duplicate architectural numbers.
Explanation and testing of the TAP function for call transfers.
Testing the system's ability to handle call transfers correctly.
Step-by-step procedure for testing the cradle switch functionality.
Procedure for measuring ground connection resistance.
Procedure for measuring line loss in TCIV systems.
Temporarily locking out bad lines, links, or receivers for testing.
Procedure for disabling a specific line for testing.
Procedure for disabling one or more links using Location Code 64196.
Temporarily disabling a defective receiver via Location Code 64012.
How TCIV Activity Statistics aid in traffic analysis and troubleshooting.
Reference for various TCIV activity statistics and their codes.
Verifying line hybrid current supply for phone operation and off-hook detection.
Detailed steps for measuring loop sense on a line.
Procedure to reduce crosstalk in multi-pair cables for better line balance.
List of specialized equipment needed for line rebalancing.
Detailed steps for performing the line rebalancing procedure.
Testing the interface board communication without the console connected.
Step-by-step procedure for testing the TC4420 interface adapter.
Troubleshooting steps for issues with the LCD display.
Normal situations considered problems with single link staff phones.
Troubleshooting steps for call-ins that cannot be cleared.
Addressing other issues related to single link staff phones.
Troubleshooting speaker intercom issues using #99 function.
Factors affecting interconnect line operation from CO to remote station.
Step-by-step troubleshooting for interconnect issues.
