It seems very difficult to find information on Poly / Polycom conference VoIP phones so I’ve made a table – correct as far as I can research and valid at time of publishing.
An image is here and a searchable and copyable table is below..
| Feature / Phone | SoundStation IP 5000 | SoundStation IP 6000 | RealPresence Trio 8500 | SoundStation IP 7000 |
| 802.3af PoE Power over Ethernet (built in) | Y | Y | Y | Y |
| Optional external universal AC power | Y | Y | Y | Y |
| Loudspeaker Frequency | 250 – 7,000 Hz | 220 – 14,000 Hz | 180 – 14,000 Hz | 160 – 22,000 Hz |
| peak volume at 1/2 metre | 84 dB | 86 dB | 90 dB | 88dB |
| Voice activity detection | Y | Y | Y | Y |
| Comfort noise generation | Y | Y | Y | Y |
| Adaptive jitter buffers | Y | Y | Y | Y |
| Packet loss concealment | Y | Y | Y | Y |
| Acoustic echo cancellation | Y | Y | Y | Y |
| Background noise suppression | Y | Y | Y | Y |
| Codec: G.711 (Alaw and µlaw) | Y | Y | Y | Y |
| Codec: G.729a (Annex A, B) | Y | Y | N | Y |
| Codec: G.722 | Y | Y | Y | Y |
| Codec: Siren | N | Y | Y | Y |
| Codec: iLBC | Y | Y | N | N |
| Local conferencing | 3 way | 3 way | 5 way | 3 way |
| Ethernet | 10/100 | 10/100 | Gigabit | 10/100 |
| Warranty | 1 year | 1 year | 1 year | 1 year |
| Dimensions (cm) (L x W x H) | 28.5 x 26.5x 6.5 | 36.8 x 31.1 x 6.4 | 35.6 x 30.9 x 7 | 39.4 x 37.2 x 7.3 |
| Weight | 0.52 kg | 0.8 kg | 0.99 kg | 1.08 kg |
| Backlit Display | Y | Y | Y | Y |
| Touch Screen Colour Display | N | N | Y | N |
| Audio in (use with a PC or cell phone) | N | 2.5mm | N | 2.5mm |
| Price (inc. VAT) | £217.49 | £329.49 | £637.42 | £453.49 |
| Source of price | yay.com | yay.com | kikatek.com | yay.com |
thecomputerperson 