Welltech WG26xx Series V.1.08a - Manual (Page 5)

26xx Technical Manual EN-V108
4
1.4 Specification
IP Network connection
IPv4 (RFC 791)
MAC Address (IEEE 802.3)
PPPoE Client (RFC 2516)
DNS Client
DHCP Client (RFC 2131)
DHCP Server (RFC 2131)
NAT (RFC 1631)
TCP/UDP (RFC 793/768)
ICMP (RFC 792)
RTP/RTCP (RFC 1889/1890)
SNTP (RFC 2030)
TFTP Client
Telnet Server
HTTP Server
QoS – 802.1Q Virtual LANs
DiffServ (RFC 2475) / ToS (RFC 791/1349)
IP Telephony (VoIP)
SIPv2 (RFC 3261)
- Session Timer (RFC 4028)
- Privacy Mechanism (RFC 3323)
- Outbound proxy setting for increasing performance, productivity,
and security.
- SIP proxy redundancy- Support Primary and Secondary proxy.
Voice Codecs
- G.711 (a-Law/u-Law): 64k bits (PCM)
- G.723.1: 6.3k/5.3k bits
- G.729A: 8k bits (CS-SCELP)
VAD – Voice Activity Detection with Silence Suppression
Echo Cancellation (G.165/G.168)
Jitter Buffer – Adaptive & Configurable
DTMF: In-band, Out-of-band (RFC 2833), and SIP-Info
Caller Generation/Detection – FSK, DTMF
FAX transmission
- G.711 pass-through
- T.38 Fax relay protocol