Choosing between the Poly CCX 400 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 CCX 400 if you want the one that costs $121 less. Pick the CCX 505 if you want the one that also supports Zoom.
Both are appliance desk phones; the difference is price.
Side by side
| CCX 400 | CCX 505 | |
|---|---|---|
| Price | $333 | $454 |
| Platforms | Teams | Teams and Zoom |
| Display | 5" color multi-touch LCD, 720 x 1280 | 5" color multi-touch LCD, 720 x 1280 |
| Power | 13 W max | — |
| Warranty | 1 year limited | 1 year limited |
| Versions | Microsoft Teams (848Z8AA) or open SIP (849A1AA) | Microsoft Teams (82Z79AA) or open SIP (82Z82AA, Zoom certified) |
| OS | Android 12 | Android 12 |
| Headset ports | 1 RJ-9, 1 EHS port | 1 RJ-9, 1 EHS port, Bluetooth |
| Microphone response | 150 Hz to 7 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 |
| Connections | Network: 2 x Gigabit Ethernet, PoE IEEE 802.3af (Class 0); USB: 1 x USB-A 2.0 (media, storage) | 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
- Platforms: the CCX 400 lists Teams; the CCX 505 lists Teams and Zoom.
Which should you buy?
- Choose the CCX 400 if you want the one that costs $121 less. See the CCX 400
- Choose the CCX 505 if you want the one that also supports Zoom. See the CCX 505
Also compared
- Poly CCX 400 vs Poly CCX 350
- Poly CCX 400 vs Yealink MP58-WH E2
- Poly CCX 400 vs Yealink SIP-T58W
- Poly CCX 505 vs Yealink SIP-T58W
- Yealink MP54 E2 vs Poly CCX 505
Still deciding? Read the CCX 400 guide and the CCX 505 guide, see CCX 400 alternatives and CCX 505 alternatives, compare them interactively, or send us your room details for a recommendation.
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