SIP Trunking for Avaya IP Office 500 Systems

Keep Your Avaya System. Cut Your Line Costs. Get Better Reliability.

If you're still running an Avaya IP Office 500 on expensive PRI or analog lines, you don't need to replace your phone system to modernize it. TTI's SIP500 service connects your existing Avaya IP Office 500 directly to our SkySwitch SIP trunking platform — giving you lower monthly costs, better call reliability, and full support, without ripping out equipment that already works.

Why Businesses Trust TTI With Their Avaya System

• ✓ Over a decade of hands-on experience with Avaya IP Office 500 systems
• ✓ We handle all Avaya-side configuration — nothing technical for you to figure out
• ✓ 99.999% uptime backed by real, local support — not an overseas call center
• ✓ Serving businesses across New Jersey, Pennsylvania, and New York

Will SIP500 Work With My System?

In most cases, yes — your Avaya IP Office 500 is likely a good fit for SIP500. Before you switch anything, we'll check your specific system's configuration and firmware to confirm compatibility, free of charge and with no obligation. If anything on the Avaya side needs adjusting, we handle that as part of the setup, so your team never has to touch the system.

Check Your System's SIP Compatibility → □ Call 856.235.1411