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vodavi 3515-71 troubleshooting

The Vodavi Phone System and Vodavi Phone 3515-17 Troubleshooting to resolve issues related to a malfunctioning phone or malfunctioning Vodavi 3515-71 Phone System.

To obtain Tier II Support

National Support:  877-272-8292


Understanding Digital Phone System Problems

What you need to know First: For Troubleshooting a Vodavi

Vodavi Support

While some issues can be resolved through simple troubleshooting techniques, it is crucial to recognize when professional assistance is necessary. Be cautious when dealing with electrical components, as mishandling them can lead to more severe problems than a malfunctioning phone line such as a fully defaulted system.  Legacy Systems ( prior to 2009) often do not have FLASH memory and thus are working off a power retention system turning it off could results in complete failure (DO NOT Turn off any phone system prior to 2009 unless absolutely needed).    Line Phones or Digital phones run over traditional telephone wire – Not data cable and they are connected via a series of connectors to the main box onsite known as a processor.  That processor and its controllers determine what the phone is by individual wire (Ie – phone jack) to each location via a connection known as a PORT.    Technicians who work on these systems are not generally IT Professionals but Telecommunications Technicians.

1. Buzzing Sound on the Phone Line

Problem: A buzzing sound can disrupt calls and be particularly frustrating for clients.

Solution:  This issue can be caused by a few different issues.  A) Would be caused by metals touching due to wiring (generally line cord from the phone to the jack or phone the phone receiver on the phone if it is an individual phone. To resolve this problem, inspect the wire connections and colors to ensure that all components are securely in place and that the wiring is not loose on the phone device. If its just on this phone it may be these issues.  B)  If however, the buzzing resides on all desk phones then it typically is a part in the Phone System where two pieces of metal are now conducting.

2. Static Noise on the Phone Line

Problem: A static noise on a phone line is just as irritating as a buzz and can hinder communication. Static is similar to buzzing but generally a different part.

Solution:  This can be wiring-like buzzing but if it is on all phones:  This could be a carrier problem if you are on traditional copper lines so rule this out first as (Groups like: WindStream using copper for the last few thousand fee) If after a wet period/rain, the static is more intense then this can be the root cause.  The issue is often by the time a technician is dispatched the area has dried and the lines return to normal.  To resolve this switch to an Analog Handoff [contact us about Analog Handoffs at 1-877-272-8292]   The other cause is static can be caused by phone cords to the receiver if it’s on an individual phone or a board part (repair required) if on all phones.

3. Dead Air on the Phone Line

Problem: Dead air can cause confusion, leading to missed or misunderstood information.

Solution: Dead air typically occurs when wires have crossed, shorted out, or stopped working altogether.  Generally, this can be on a Carrier’s Demarc ( Called ATA or SIP Conductivity issue) If this is One-way audio that is almost certainly a malfunctioning ATA box but on the carriers side it will show a “Green Light” so you will have to push for a resolution. Sometimes if they talk you through a power cycle of the ATA Hand-off it will resolve the issue without a site visit.

By following these simple troubleshooting techniques, you can efficiently address common digital phone system issues and ensure that your business runs smoothly. Remember to seek professional help if you encounter a more complex problem or if you’re unsure how to proceed with troubleshooting.


4. No Dial Tone – No Display

Determine if this is on a single Vodavi 3515-71 phone or all phones.

Single Phone:  Check the wire from the wall jack to the individual phone. You can take a working phone and move it to this locations as the Vodavi Control processor determines what phone it is.  If moving a working phone resolves it then contact us for a replacement phone and at that time replace the wire from the jack to the phone.  If it does not resolve it this is likely what is known as a bad port (a Board Part) and will need to be replaced, and again contact us for parts/repair.

All Phones: on the System –  If the phones are completely dead with no display this is a system-wide problem.  It is likely related to a board failure or controller failure.  If you reside in the United States you have access to our support and we can talk you through more troubleshooting to determine which part or parts are involved.


5.  No Dial Tone –  with Display LDK-SCOUT

Potential Messages:



You need tech support and trained professionals to assist you as this is a major system fault / Failure.

Vodavi Support and Vodavi Troubleshooting
You need Vodavi Repair and Support Services to resolve this as this is a major malfunction. Call national Vodavi Support at 877-272-8292


Vodavi Support




Vodavi Telephone System

Vodavi Telephone System, the Vodavi Starplus STS was a popular telephone system from 1999 to 2006 and no longer produced, Vodavi Upgrades are available.

Vodavi Telephone System

Obtain Vodavi Upgrade Quote Options

Support 1-877-690-7705

Upgrades – Refurbished Systems – Replacement Phones

Vodavi departed the industry in 2006 and a great deal of support has been migrated over to A.B.S and TelcompBX who had highly trained telecommunication specialists to assist end users.

Replacement Vodavi Phones

Replacement Vodavi Phone

Upgrade Options

Vodavi Phone Systems

Today the Vodavi has been replaced with a few products. (1) is the official upgrade [ LG Summit ] but due to modifications and wiring changes only larger deployments of Vodavi should upgrade to this to save money (2) is the VoceOne Vodavi Express – This is a Cloud version which is one of the most User Friedly Cloud Version of   Vodavi System. (note: Clouds operate differently)  (3) Is the NEC 2100LN-V  This is a customized NEC product that gives you the closest experience to the Vodavi keeping it in Line Mode and enjoying a cost savings overtime.  (4th) is the Avaya 500LN-V – This is a custom-built Avaya product to give a close feel to the Vodavi System back by the Avaya Brand and national support.

Our Vodavi phone systems & telephone equipment offer feature-rich options and performance for an affordable price.  If you currently


Vodavi Telephone Systems

Vodavi Dealers

Vodavi Repair

We are one of the last remaining Vodavi dealers offering national support for the Vodavi Telephone System, and the Vodavi Phones.  If you need support, upgrades, or Vodavi Support we are Telephone System Technicians.   A.B.S Vodavi Support

Vodavi Line Systems | Upgrades | Cloud Options for Vodavi

Vodavi Goes Vertical with the LG Summit System upgrades solution.  This system will back support Vodavi Starplus STS phones however the cost of adjustments to the onsite wiring can in smaller deployments off set other upgrade options.  We only recommend go LG Summit when you have 12 to 24 phones as you will see very little savings otherwise.

Vodavi Support (TelcomPBX)  is dedicated to providing customers with easy-to-use Business Phone System solutions that suit their requirements and budget.  MD ConnectX is a family-owned and operated business with extensive experience in telecommunications. We provision, maintain and manage small to medium businesses’ voice and data communications needs.  Vodavi Repair is now part of the TelcomPBX.



This page is related to: Vodavi Telephone System

The Vodavi Replacement Phone, Vodavi Telephone System, Vodavi Phone System, Vodavi Support, Vodavi Dealers, Vodavi STS, Vodavi Star Plus STST


Vodavi Telephone Systems