AT&T MERLIN 820 User Manual (English)

Other manuals for AT&T MERLIN 820

Service And Maintenance Manual105 pages

Administration Manual22 pages

Questions and Answers:

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Tiffany Hill PhDAug 19, 2025
What to do if all AT&T Conference System voice terminals have no lights and no dial tone?
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  Gabrielle DouglasAug 19, 2025
  If all AT&T Conference System voice terminals have no lights and no dial tone, first, try turning the control unit off and then back on. If that doesn't work, ensure the control unit is not plugged into a switch-controlled outlet. Test the power outlet with another appliance. Lastly, with the power off, remove and reseat each module and cartridge in the control unit, ensuring they are secure, then turn the power back on.
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Austin CookAug 21, 2025
Why I have difficulty placing outside calls from AT&T MERLIN 820 voice terminal?
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  Joseph JenkinsAug 21, 2025
  If you're having difficulty placing outside calls from one or more AT&T Conference System voice terminals, start by checking the Tone/Pulse switch setting on the control unit. If the issue persists, the Call Restriction feature may be activated; consult the administration manual for guidance. To identify faulty system components, attempt to place both outside and intercom calls from multiple voice terminals. Finally, to check for faulty telephone company wiring, unplug the line cord from the network interface and plug in a basic Touch-Tone or rotary telephone.
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Thomas MooreAug 23, 2025
What to do if AT&T Conference System isn’t working properly?
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  Rebecca MorrisAug 25, 2025
  If the AT&T Conference System isn’t working properly and the issue isn’t in the troubleshooting table, try resetting the control unit by turning it off and then back on. If that doesn't resolve the problem, the issue might be a loose module or cartridge. Turn the control unit off, remove and reinsert each module and cartridge to ensure they are securely seated, and then turn the power back on.
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Linda HillAug 26, 2025
What to do if I have difficulty placing outside calls from multiple AT&T Conference System voice terminals?
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  erobbinsAug 26, 2025
  If you are having difficulty placing outside calls from more than one AT&T Conference System voice terminal, try replacing the network interface’s line adapter with another one. Then, plug a basic telephone into each of the jacks and try to place an outside call to test if the issue is resolved.
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Michael RichardsAug 28, 2025
How to fix a voice terminal that doesn't ring on AT&T MERLIN 820?
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  Kathryn HallAug 28, 2025
  If an AT&T Conference System voice terminal doesn’t ring, first check the volume control setting on the voice terminal and slide the switch to a higher setting. If that doesn't work, the voice terminal may be programmed not to ring; refer to the user’s guide for instructions on programming ringing options. Also, if you have a Feature Package, the Do Not Disturb feature might be activated; consult the Feature Package user’s guide to check its status.
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Jacqueline JonesAug 30, 2025
What to do if there is trouble with voice terminal lights, speaker, or ringing on AT&T MERLIN 820?
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  Connie EatonAug 30, 2025
  If there is trouble with the lights, speaker, or ringing on your AT&T Conference System voice terminal, try the following: 1. Slide the T/P switch on the side of the voice terminal to the T position and hold it there. 2. Unplug the modular voice terminal cord from the malfunctioning voice terminal and replug it into a working voice terminal to test if the issue is with the terminal itself. 3. At the control unit, locate the intercom jacks for both the malfunctioning and working voice terminals. Unplug both and replug each into the other’s jack.
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Dale WrightSep 1, 2025
Why is my AT&T Conference System voice terminal ringing constantly?
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  Corey PerezSep 2, 2025
  If an AT&T Conference System voice terminal rings constantly, check the position of the T/P switch on the voice terminal. Ensure it is set in the center position.
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housekatherineSep 4, 2025
Why my AT&T MERLIN 820 cannot make an outside call?
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  gonzalezrebeccaSep 4, 2025
  If your AT&T Conference System is not making outside calls, a possible cause is faulty telephone company lines. To check this, plug a standard modular telephone into the telephone company wall jack for your incoming line. If you experience the same problem with the standard phone, report the trouble to your local telephone company. Another cause could be that the Outward Calls switches on the control unit are set to No (down). If so, set Outward Calls switches to Yes (up). Finally, ensure that the Tone/Pulse switch on the control unit is set correctly. If you have Touch-Tone service, set the switch to Tone; otherwise, set it to Pulse.
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Samantha AndersonSep 6, 2025
What to do if all voice terminals are dead on my AT&T MERLIN 820 Conference System?
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  Katie CraneSep 6, 2025
  If all voice terminals on your AT&T Conference System are dead (no lights, no dial tone), it could be due to loose connections. Check the connections plugged into each voice terminal, the control unit, and the telephone company line jacks, and secure any loose connections. Another potential cause is that there is no power to the control unit. If the green light on the control unit is off, plug something else into the AC outlet to see if it is supplying power. Ensure the control unit is not plugged into a switch-controlled outlet.
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Kenneth TurnerSep 8, 2025
How to fix voice terminals that don't ring on AT&T MERLIN 820 Conference System?
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  Wesley MillerSep 8, 2025
  If the voice terminals on your AT&T Conference System do not ring, first, check the volume control and turn it up. If that doesn't work, the lines may be programmed not to ring, so program line ringing as desired. Finally, the Do Not Disturb feature may be activated. Touch Do Not Disturb to deactivate the feature (the green light goes off). If the buttons on your voice terminal are not labeled, check each programmable button to see if the green light next to it is on; the Do Not Disturb feature should be on one of those buttons. Then, reprogram those buttons.