Network Protocol
•SIP v1 (RFC2543), v2 (RFC3261)
•IP / TCP / UDP / RTP / RTCP
•IP / ICMP / ARP / RARP / SNTP
•FTP / DNS / TFTP / DHCP / PPPoE Client
•HTTP / NAT / DHCP server
Tone
•Ring Tone
•Ring Back Tone
•Dial Tone
•Busy Tone
•Programming Tone
Phone Functions
•Volume Adjustment
•Speed Dial
•Phone Book
•Flash
•Speaker Phone
•Call History
•Caller ID
•Voice Message / Incoming Call
Indicator
Codec
•G.711: 64k bit/s (μ/A‐law)
•G.723.1: 6.3k / 5.3k bit/s
•G.726: 16k / 24k / 32k / 40k bit/s (ADPCM)
•G.729A: 8k bit/s (CS‐ACELP)
•G.729B: adds VAD & CNG to G.729
IP Assignment
•Static IP
•DHCP
•PPPoE
SIP Registration
•3 independent accounts
Appendix 
Specification
Voice Quality
•VAD: Voice activity detection
•CNG: Comfortable noise generator
•LEC: Line echo canceller
•Packet Loss Compensation
•Adaptive Jitter Buffer
Security
•HTTP 1.1 basic /digest authentication for Web setup
•MD5 for SIP authentication (RFC 2069/RFC 2617)
QoS
•IEEE 802.1Q VLAN
•ToS field
Call Function
•Call Holding
•Call Waiting
•Call Forwarding
•Caller Transferring
•Call Blocking
•Call Redial
•Three‐way conference
NAT Transversal
•STUN
•Outbound Proxy
Configuration
•Web browser
•TFTP
•Keypad
DTMF Function
•In‐band DTMF
•Out‐of‐band DTMF
•SIP information
Firmware Upgrade
•TFTP
•HTTP
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