 | SIP application server, proxy, registrar, and location server (RFC 3261) |
| Multiple service provider lines/SIP account support (four) |
| Shared line appearance (SLA) |
| Automated attendant |
| Configurable automated attendant answer delay |
| Interactive voice response (IVR) |
| Recordable IVR prompts |
| Automatic call distribution (ACD) |
| Call park: user-definable parking space number |
| Call unpark |
| Call transfer |
| Call forward |
| Group paging |
| Intercom |
| Directed call pickup |
| Group call pickup |
| Integrated media proxy or direct Real-Time Protocol (RTP) routing to service provider |
| Differentiated Services (DiffServ)/type of service (ToS) support |
| Two FXS ports for phones, fax machines, or media adapters |
| Voice encoding according to G.711 (64 kbps) |
| Fax support using G.711 pass-through or T.38 |
| Echo cancellation (G.165) |
| Additional Features When Used with Cisco Small Business IP Phones: |
| Line status: active line indication, name/number |
| Digits dialed with number auto-completion |
| Call hold |
| Call waiting |
| Call transfer: attended and blind |
| Call conferencing |
| Automatic redial |
| Call pickup: selective and group1 |
| Call swap |
| Call forwarding: unconditional, no answer, on busy |
| Hot line and warm line automatic calling |
| Call log (60 entries each): made, answered, missed calls |
| Personal directory with autodial (100 entries) |
| Do not disturb |
| Uniform Resource Identifier (URI) IP dialing support (vanity numbers) |
| On-hook default audio configuration (hands-free/headset) |
| Multiple ring tones with selectable default ring tone per line |
| Called number with directory name matching |
| Calling number with name: directory matching or via caller ID |
| Subsequent incoming calls with calling name and number |
| Date and time with intelligent daylight savings support |
| Call duration with call timestamp stored in call logs |
| Name/identity (text) display at startup |
| Distinctive ringing based on calling and called number |
| User-downloadable ring tones and ring tone generator |
| Download on demand ring tones: 10 |
| Speed dial support |
| Configurable dial/numbering plan support per line |
| DNS SRV and multiple A records for proxy lookup and proxy redundancy |
| Syslog, debug, report generation, and event logging |
| Highly secure call-encrypted voice communication support |
| Built-in web server for administration and configuration with multiple security levels |
| Automated provisioning, multiple schemes, up to 256-bit encryption (HTTP, HTTPS, TFTP) |
| Option to require administrator password to reset unit to factory defaults |
