| Features | | Polycom VVX 500/501 | |
|
| |  | |
| Additional Information | | | |
| Initial Release | | 4.0.1 (SU15) | |
| Authentication | | yes | |
| Auto Answer | | yes | |
| Blind Transfer | | yes | |
| Call and Line Appearances | | | |
| Call Appearances per line | | 24 | |
| Line Appearances | | 12 | |
| Call Deflection | | | |
| Forward All | | no | |
| Forward Busy | | no | |
| Forward No Answer | | no | |
| Call Waiting | | yes | |
| Can be used with Interaction Client | | yes | |
| Codecs | | | |
| Additional Codecs | | wideband | |
| G.711alaw | | yes | |
| G.711ulaw | | yes | |
| G.722 | | yes | |
| G.723.1 | | yes | |
| G.726 | | yes | |
| G.729AB | | yes | |
| GSM | | yes | |
| Opus | | no | |
| RFC 3389 (VAD/CNG) | | yes | |
| Color LCD Screen | | yes | |
| Conference | | yes | |
| Consult Transfer | | yes | |
| Delayed Media | | yes | |
| DHCP | | yes | |
| Dial Plan Capabilities | | | |
| Dial Plan Routing | | no | |
| Dial Plan Termination | | no | |
| Do Not Disturb button | | yes | |
| DTMF | | | |
| Inband | | yes | |
| RFC 2833 | | yes | |
| Expansion Module(s) / Sidecar(s) | | yes, IC 4.0 SU4+ | |
| Headset Jack | | yes | |
| Hold | | yes | |
| Inline Power | | | |
| 802.3af | | yes | |
| Cisco Inline Power | | no | |
| Interaction Center Integration | | | |
| Call Park | | yes | |
| Group Pickup | | no | |
| Shared Line Appearances / BLA | | yes | |
| Latency | | | |
| Always in | | no | |
| Dynamic | | no | |
| Missed Call Indication | | yes | |
| Mute | | yes | |
| MWI | | yes | |
| NAT Support | | yes | |
| Network Interface | | 10/100/1000 FD | |
| Proxy Capabilities | | | |
| Backup Proxy | | yes | |
| Outbound Proxy | | no | |
| RFC 3263 | | yes | |
| QoS | | | |
| DSCP | | yes | |
| Re-Invite Support | | yes | |
| Redial Button | | yes | |
| Ringer Selection | | 15 | |
| RJ45 Jack for PC | | yes | |
| Signal / Audio | | | |
| SRTP | | yes | |
| TCP | | yes | |
| TLS | | yes | |
| UDP | | yes | |
| Speakerphone | | Full-duplex | |
| Speed Dial Buttons | | yes | |
| Supported Ports | | | |
| USB | | no | |
| Termination Character | | # | |
| TFTP/FTP configuration | | TFTP/FTP | |
| Voicemail button | | yes | |
| Volume Control | | yes | |
| Web server Configuration | | no | |
