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SPECIFICATION

Product
SIP Webcall Server

Model
EWCS-1901

Capacity
*10 Concurrent Calls with RTP

*10 SIP Trunks to ITSP

*10 Web Call Trunks for Web call Client

Hardware

WAN
1 x 10/100Mbps RJ-45 port

LAN
4 x 10/100Mbps RJ-45 port

USB
2 x USB 1.1/2.0 port

POTS
4 x FXO/FXS port

Protocols and Standard

Standard
SIP RFC3261, SDP RFC2327, SIP NAT Traversal Support STUN (RFC3489), Real-time Transport
Protocol Payload for Comfort Noise (RFC3389)

Voice codec
G.711: 64k bit/s (PCM)
G.723.1: 6.3k / 5.3k bit/s

Voice Standard
Voice Activity Detection (VAD)
Comfort Noise Generation (CNG)
Acoustic echo canceller (AEC)
G.165: Line echo canceller (LEC)
Jitter Buffer

Supplementary services
Caller ID
Busy call forwarding
Unconditional, Unavailable, Busy Call Forward
Call Hold/Waiting/Transferring
In-band/RFC2833/SIP-INFO DTMF Translation
Auto Generate the Auth. Key for Web Call Client
3-layer IVR

Protocols