Avaya Phone System Support
When you rely on your Avaya system daily, downtime, dropped calls or unresolved technical issues can become costly. If you're experiencing a technical issue and need immediate help, trust Advanced Communication Systems to get you back up and running. No matter the hardware or software failure, our teams can get your teams back up and communicating again.
Whether you have a critical issue that needs immediate attention or you're looking for a long-term partner to manage your communication systems, ACS has the dedicated Avaya expertise you need. Your critical system deserves an expert. Choose the certified specialists for your Avaya phone system customer service.

Avaya Support Services We Provide
Whether you're actively troubleshooting or considering a support contract, we can handle your specific Avaya concern. Our team of certified Avaya specialists has the deep knowledge your critical systems need.
Explore the scope of our Avaya support services:
- Hardware troubleshooting and repair
- Software issue resolution and system configuration
- Moves, Adds, and Changes (MACs)
- Remote support and on-site dispatch
- Voicemail, auto-attendant, and call routing adjustments
- New user setup and end-user training
The Case for an Avaya Maintenance Agreement
The right partner can help you transition from reactive break-fixing to proactive maintenance and support. To avoid another crisis, consider an Avaya maintenance agreement to keep your systems up to date before they fail.
The benefits of an Avaya maintenance agreement include:
- Predictable, manageable monthly costs.
- Guaranteed priority response times.
- Proactive, regular system health checks to prevent issues.
- The peace of mind that comes from having a support team that already knows your system's configuration.
Why Avaya Systems Need a Specialist
Avaya systems have a specific architecture and proprietary tools that require deep, dedicated experience. Unlike generalist Managed Service Providers (MSPs), we are a certified Avaya specialist with the expertise to maintain and support specialized systems.
As an official Avaya service provider, our team of certified engineers brings 25+ years of combined experience across 5000+ clients to provide the technical support your system needs. Partner with us to gain the phone system support you require now and in the future.
Supporting You Now and When You're Ready for What's Next
When you choose a trusted Avaya partner, the relationship naturally evolves as your needs do. As experts in your current infrastructure, we can advise on how to maintain or eventually seamlessly upgrade your systems.
We are your trusted Avaya partner through critical downtime and planned maintenance. Discover our Avaya phone system upgrade capabilities and learn when it's time for an upgrade. Our Avaya specialists will guide you through everything from upgrade paths to team onboarding.
Featured Client Success Stories
"Having had exposure to ACS at other companies, I was delighted to see that the company commitment, passion and drive for excellence is still thriving." - American Cancer Society
Fantastic installation by ACS! You made it easy for us to ensure that everything runs smoothly with our new Avaya system. Very professional, very helpful and always there when we need you. - Allstate Insurance
It was terrific to work with an organization that was able to adapt to our needs so readily and effectively. Your installers were exceptional and showed a willingness to ensure that all users had a good understanding of the new phone system. - Harris Teeter
We cannot thank you enough for the dedication and professionalism displayed by your entire team. The new phone system installation and training was a big success. All promises met and delivered. Thank you for all of your efforts. - Mitsubishi Industries
The service your company provides is top quality – from initial request for info, to the proposal and execution. You understood our unique requirements and improvised when requested. Raytheon - Raytheon
Get Avaya Phone System Support
Need support for your Avaya phone system now? Phone us at 866-521-4571 for immediate assistance.
If you're not in crisis but want to discuss a maintenance agreement, contact us today for expert support. Take the first step in preventing future failures by reaching out to our Avaya-certified team to learn about your maintenance plan options.