D-Link VoiceCenter DVX-2000MS-10 - Manual (Page 4)

Technical Specifications
Protocol + IETF SIP (RFC3261)
Network Interface + RJ45 x 2, 10/100BaseT
LCD Display + 2 x 16 Characters
Key Pad + 25 Keys (Including Microsoft Response Point (RP) Button for One-touch Access to Voice-activated Commands)
Call Features + Call Hold + Call Mute
+ Call Retriever + Call Transfer
+ Call Waiting + Call Forward (Busy / No Answer / Unconditional)
+ Caller ID Display + Anonymous Call
+ Anonymous Call Blocking + In-band DTMF / Out-of-band DTMF
+ (RFC 2833) / SIP INFO + Message Waiting Indicator
+ 3-way Conference + Redial
Codec + G.711μ-law + G.711a-law
+ G.729a/b
Phone Functions + Multi-user (4 SIP Accounts) + Speakerphone Communication
+ Pre-dial Before Sending + Handset / Speakerphone Volume Adjustment
+ Speed-dial (10 Records) + Phonebook (200 Records)
+ Call History (Incoming / Outgoing / Missed Calls)
Security + HTTP 1.1 Basic/Digest Authentication for Web Setup + MD5 for SIP Authentication (RFC 2069/ RFC 2617)
Dial Methods + Direct IP Call without SIP Registration + Dial Registered Number via SIP Server
+ Dial URI from Phonebook / Speed-dial
Voice Quality + VAD (Voice Activity Detection) + CNG (Comfort Noise Generation)
+ AEC (Acoustic Echo Cancellation) + G.168
+ Jitter Buffer
QoS + ToS Field + IEEE 802.1q VLAN
Tone + DTMF + Ring Tone, 4 Selectable and 4 Editable Tones
+ Ring Back Tone (Local and Remote) + Dial Tone
+ Busy Tone
IP Assignment + Static IP + DHCP
+ PPPoE
NAT Traversal + UPnP + STUN
TCP/IP + IP/TCP/UDP/DHCP/RTP/RTCP/ + ICMP/HTTP/NTP/TFTP/DNS
DVX-2000MS-5 / DVX-2000MS-10
DPH-125MS
IP Phone for VoiceCenter Phone System