Cisco
Cisco SPA508G 8-Line IP Phone with PoE & Dual Ethernet SPA508G
PO and Net 30 available for schools, government, hospitals, and law firms.
Description
Description
Cisco SPA508G 8-Line IP Phone — Refurbished to Like-New Condition
Upgrade your business communications with the Cisco SPA508G 8-Line IP Phone, a reliable VoIP desk phone from Cisco's Small Business Pro Series. Fully tested and backed by Reef Telecom's industry-leading 10-year warranty, this refurbished SPA508G delivers enterprise-grade call management at a fraction of the cost of new.
Key Features & Specifications
- 8 Voice Lines — Handle multiple calls with eight independent SIP registrations
- Dual Ethernet Ports — Integrated 10/100BASE-T switch lets you share one cable drop between phone and PC
- Power over Ethernet (PoE) — 802.3af compliant; no separate power adapter needed with a PoE switch
- Backlit LCD Display — 128 x 64 monochrome screen for easy call management and on-screen apps
- HD Wideband Audio — Crystal-clear voice quality via handset, headset (2.5mm jack), or full-duplex speakerphone
- Protocol Support — SIP and SPCP compatible with hosted VoIP platforms (RingCentral, Nextiva, 8x8) and Cisco UC500 Series
- Expandable — Supports up to two Cisco SPA500S expansion modules for up to 64 additional buttons
- Secure Provisioning — HTTPS, TLS, SRTP, and up to 256-bit AES encryption for remote management
What's Included
- Cisco SPA508G IP Phone
- Handset with cord
- Desk stand
Note: Power adapter sold separately — Cisco PA100-NA (not required if using PoE).
Ideal For
Small businesses, home offices, call centers, and multi-site deployments needing an affordable, feature-rich 8-line VoIP phone. Compatible with most SIP-based hosted PBX and on-premise IP PBX systems.
Free shipping on orders over $300. Every refurbished phone from Reef Telecom is backed by our 10-year warranty — the longest in the industry.
Specs & Details
Specs & Details
Shipping & Warranty
Shipping & Warranty
Free ground shipping on orders over $300. Same-day shipping on orders placed before 4PM EST.
All products include our industry-leading 10 Year Warranty backed by Reef Telecom.

We clean up after ourselves.
Ecommerce deliveries have a carbon footprint. That's why we support verified projects that remove carbon from the air.
Every delivery’s carbon footprint is calculated based on weight, shipping method, and distance traveled. We neutralize these emissions by purchasing verified carbon removal credits from groundbreaking projects.
With your purchase, you’ll join a community of proactive merchants and customers dedicated to a sustainable future. Together, we've removed emissions for over 80 million deliveries and removed over 56 thousand tonnes of carbon.
We work with a network of pioneering carbon removal companies that have been vetted by the commerce platform Shopify.
Reef Telecom Proudly Supports
-
Ocearch
2026 Monthly Shark Hero -
Coral Restoration Foundation
2025 Staghorn Donor -
Ocean Conservancy
2025 Donor
Smart IT. Clean Oceans. Boundless Possibilities.
Our goal is providing the highest quality refurbished equipment to promote environmentally-conscious equipment usage through it's lifecycle.