User's Manual

4-/8-/16-/24-/32-Port SIP Internet Telephony Gateway
7
1.3.3 VGW-2420FS / VGW-3220FS
Product VGW-2420FS VGW-3220FS
Hardware
LAN
4 x 10/100BASE-TX RJ45 port
Voice
24 x RJ11 connection (24 x Foreign
eXchange Station)
32 x RJ11 connection (32 x Foreign
eXchange Station)
1 x RJ21, 50 PIN 2 x RJ21, 50 PIN
Console
1 x RS232, 115200bps
Weight
3200g
Dimensions (W x D x H)
440 x 250 x 44 mm
Power Requirements
100-240VAC, 50-60 Hz
Power Consumption
40W
Protocols and Standard
FXS
 Dial Mode: DTMF and Pulse
 Pulse: 10 and 20 PPS
 Caller ID: DTMF/FSK CLI Presentation
 Max Cable Length: 3KM
 Reverse Polarity
 Programmable Call Progress Tone
Voice & Fax
 G.711A/U law, G.723.1, G.729A/B,G.726 and iLBC
 Silence Suppression
 Comfort Noise Generation (CNG)
 Voice Activity Detection (VAD)
 Echo Cancellation (G.168), with up to 128ms
 Adaptive (Dynamic) Jitter Buffer
 Hook Flash
 Programmable Gain Control
 T.38/Pass-through
 Modem/POS
 DTMF mode: Signal/RFC 2833/INBAND
 VLAN 802.1P and 802.1Q
 Layer 3 QoS and DiffServ
VoIP
 IETF Session Initiation Protocol (SIP) v2.0 (UDP/TCP)
 RFC 3261 and Session Description Protocol (SDP)
 RTP (RFC 2833), RFC 3262, RFC 3263, RFC 3264, RFC 3265, RFC 3515,
RFC 2976 and RFC 3311
 RTP/RTCP, RFC 2198 and RFC 1889
 RFC 4028 Session Timer
 RFC 3266 IPv6 in SDP
 RFC 2806 TEL URI
 RFC 3581 NAT and rport