ZyXEL Communications 2R-P1C - Manual (Page 43)

43
P-2301/2R-P1C / P-2301RL-P1C User’s Guide
9 Features
Voice Functions SIP (RFC 3261) version 2
SDP (RFC 2327)
RTP (RFC 1889)
RTCP (RFC 1890)
G.168 Echo Cancellation
VAD (Voice Activity Detection)
Silence Suppression
CNG (Comfort Noise Generation)
QoS Supports ToS and Diffserv Tagging
Compression: G.711 (PCM), G.729 (ADPCM)
Loop Start Signaling Support
Modem and Fax Tone Detection and Pass
Through
DTMF Detection
Point to Point Calling (Direct IP to IP Calling)
Speed Dial Phonebook
PSTN Line Support (Prestige P-2302RL-P1)
Support NAT Traversal / RFC 3489- IETF Simple
Traversal of UDP Through NAT (STUN)
Caller ID
Dialing Type: Tone, Pulse (Auto detection)
Tip/ring polarity reversal
Protocol Support PPP over Ethernet (RFC 2516)
Transparent bridging for unsupported network
layer protocols.
DHCP Client