LevelOne VOI-7011 - Manual (Page 8)

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1.1. Features
SIP v1 (RFC2543), v2 (RFC3261) with MD5
authentication (RFC2069 and RFC 2617)
RJ45 x 2 for Ethernet WAN and LAN ports
ITU-T G.711, G.723, G.726, G.729A/B, VAD and CNG for
Speech Codec
ITU-T G.165/168 Echo Cancellation
LCD Display for registered IP phone number
Configurations by Web Browser and Telephone Keypads
Embedded NAT/DHCP Server
PPPoE/DHCP Client for Dynamic IP plus NAT, DNS, and
DDNS Clients
Support STUN server for NAT Traversal
Speed Dial, Call Forward/Waiting/Transfer/Hold, and
3-Way Conference Call features
Direct IP/URL Dial without SIP Proxy or Dial number via
SIP server
Phone book stores up to 140 records
VPN PPTP Client embedded
One FXO port to forwarding calls *
* Only VOI-7011 provides FXO port