Choosing between the Poly Edge E550 and the Poly CCX 505? Here's how they differ on platforms, audio and price, and which one fits your room.

Short answer: pick the Edge E550 if you want the one that costs $156 less. Pick the CCX 505 if you want the one that also supports Teams and Zoom.
Both are appliance desk phones; the difference is screen and price.
Side by side
| Edge E550 | CCX 505 | |
|---|---|---|
| Price | $298 | $454 |
| Platforms | — | Teams and Zoom |
| Display | 5" color IPS LCD, 800 x 480, RGB status lightbar | 5" color multi-touch LCD, 720 x 1280 |
| Power | 13 W max; optional 5 V 3 A adapter sold separately | — |
| Warranty | 1 year limited | 1 year limited |
| Line keys | 12 line keys, up to 48 assignments (34 SIP lines) | — |
| Headset ports | 1 RJ-9, 1 EHS port (optional APP-51 adapter) | 1 RJ-9, 1 EHS port, Bluetooth |
| Audio | Poly HD Voice, NoiseBlockAI (speakerphone), Acoustic Fence (handset/headset) | — |
| Microphone response | 150 Hz to 14 kHz | 100 Hz to 20 kHz |
| Codecs | G.711, G.722, G.722.1, G.729AB, iLBC, Opus | G.711, G.722, G.729AB, iLBC, Opus |
| Versions | — | Microsoft Teams (82Z79AA) or open SIP (82Z82AA, Zoom certified) |
| Connections | Wireless: Bluetooth 5.0, dual-band Wi-Fi, NFC; Network: 2 x Gigabit Ethernet (RJ-45), PoE IEEE 802.3af Class 4; USB: 1 x USB-C 2.0 (media, storage, headset, expansion module) | Wireless: Bluetooth 4.2, dual-band Wi-Fi (2.4/5 GHz); Network: 2 x Gigabit Ethernet, PoE IEEE 802.3af; USB: 1 x USB-A 2.0, 1 x USB-C 2.0 (headset, storage, expansion module) |
Specs are Poly's published figures. Prices can change.
The key differences
- Screen: Edge E550: 5" color IPS LCD, 800 x 480, RGB status lightbar. CCX 505: 5" color multi-touch LCD, 720 x 1280.
- Platforms: the Edge E550 lists no certifications; the CCX 505 lists Teams and Zoom.
Which should you buy?
- Choose the Edge E550 if you want the one that costs $156 less. See the Edge E550
- Choose the CCX 505 if you want the one that also supports Teams and Zoom. See the CCX 505
Also compared
- Yealink MP56 E2 vs Poly Edge E550
- Yealink SIP-T54W vs Poly Edge E550
- Yealink SIP-T57W vs Poly Edge E550
- Poly CCX 505 vs Yealink SIP-T58W
- Yealink MP54 E2 vs Poly CCX 505
Still deciding? Read the Edge E550 guide and the CCX 505 guide, see Edge E550 alternatives and CCX 505 alternatives, compare them interactively, or send us your room details for a recommendation.
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