| General |
| Status | R4 |
| Product Type | VoIP phone |
| Body Colour | Silver, dark grey |
| Body Material | ABS plastic |
| Phone Features |
| Call Services | Voice Mail, Caller ID, Call Waiting, Call Forwarding, Call Transfer, Call Hold |
| Key Expansion Module Max Qty | 2 |
| Dialer Type | Keypad |
| Dialer Location | Base |
| Conference Call Capability | 3-way |
| Intercom | Yes |
| Speakerphone | Yes (digital duplex) |
| Automatic Redial | Yes |
| Menu Operation | Yes |
| Function Buttons | Conference button, speakerphone button, transfer button, headset button, mute button, hold button, auto redial button |
| Programmable Buttons Qty | 4 |
| Volume Control | Yes |
| Ringer Control | Yes |
| Indicators | Voice message waiting indicator, speakerphone indicator, headset |
| Firmware Upgradable | Yes |
| Additional Functions | Call timer, built-in clock, Pager Call, Intercom, automatic redial |
| Additional Features | On-hook dialling, music on hold, built-in web server |
| IP Telephony |
| Main Features | Multiple VoIP protocol support, integrated Ethernet switch |
| VoIP | Yes |
| VoIP Protocols | SIP, SIP v2, SPCP |
| Voice Codecs | G.722, G.729a, G.711u, G.711a, G.726 |
| Lines Supported | Multiline |
| Quality of Service | IEEE 802.1Q (VLAN), Differentiated Services (DiffServ), IEEE 802.1p, Type of Service (ToS) |
| IP Address Assignment | DHCP |
| Security | 256 bit AES |
| Power Over Ethernet (PoE) Support | Yes |
| Network Protocols | IP, TCP, TFTP, UDP, ICMP, ARP, HTTP, DNS, HTTPS |
| Network Ports Qty | 2 x Ethernet 10Base-T/100Base-TX |
| Voice Features | Comfort noise generation (CNG), voice activity detection (VAD), HD Voice |
| Network Features | Network Address Translation (NAT) |
| Phone Memory |
| Phone Directory Capacity | 100 names & numbers |
| Call Log Capacity | 60 numbers |
| Display |
| Type | LCD display - monochrome |
| Display Location | Base |
| Display Resolution | 128 x 64 pixels |
| Backlit | Yes |
| Miscellaneous |
| Connections | Headset jack / sub-mini-phone 2.5mm |
| Cables Included | Network cable |
| Compliant Standards | UL, C-Tick, CB, FCC Part 15 B, A-Tick |
| Dimensions & Weight (Base) |
| Width | 21.4 cm |
| Depth | 4.4 cm |
| Height | 21.2 cm |
| Weight | 0.9 kg |
| Compatibility Information |
| Designed For | Cisco Small Business Pro Unified Communications 320 with 4 FXO |
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