• Dễ dàng kết nối đến các điện thoại hoặc PBX bằng IP trunk.
• Tiết kiệm chi phí - Đối với các cuộc gọi đường dài và quốc tế thông qua việc sử dụng mạng IP.
• Không đòi hỏi thêm chi phí - Tích hợp tốt với các mạng LAN và môi trường IP có sẵn.
• Giao tiếp dễ dàng, đơn giản với các ADSL/Cable Modem hoặc các thiết bị Lease Line.
• Giao tiếp dễ dàng với tất cả các loại IP-PBX.

Bảng so sánh kỹ thuật

	H.323 Version	SIP version
Protocol	ITU-T H.323 v2/v3/v4 compliance	SIP RFC3261
Telephony Features	Call Hold, Call Transfer, Call Forward (H.450)	Call Hold Call Transfer Call Forward
FAX support	Provide T.38/FAX and voice Auto-Switching	Provide T.38/FAX and voice Auto-Switching
Audio Codec support	G.711A/μ-law, G.723.1, G.729A, G.729	G.711A/μ-law, G.723.1, G.729A, G.729
Network Interface	A 10BaseT Ethernet RJ-45 port	A 10BaseT Ethernet RJ-45 port
FXO Interface	Two Analog PSTN (FXO) RJ-11 port for WellGate 3802 Four Analog PSTN (FXO) RJ-11 port for WellGate 3804	Two Analog PSTN (FXO) RJ-11 port for WellGate 3802 Four Analog PSTN (FXO) RJ-11 port for WellGate 3804
Voice Quality	VAD (Voice Activity Detection) CNG (Comfort Noise Generation) G.168/165-compliant adaptive echo cancellation Dynamic Jitter Buffer Bad Frame Interpolation Completed voice band signaling support Receive Caller ID (DTMF or FSK) from PSTN Provide Inbound or Outbound DTMF generation/detection between LAN and PSTN interface Gain/Attenuation Settings	VAD (Voice Activity Detection) CNG (Comfort Noise Generation) G.168/165-compliant adaptive echo cancellation Dynamic Jitter Buffer Bad Frame Interpolation Completed voice band signaling support Receive Caller ID (DTMF or FSK) from PSTN Provide Inbound or Outbound DTMF generation/detection between LAN and PSTN interface Gain/Attenuation Settings
QoS	QOS by setting DSCP (Differentiated Service Code Point) parameters of VoIP packet	QOS by setting DSCP (Differentiated Service Code Point) parameters of VoIP packet
Caller ID	Caller ID (Bellcore or FSK) detection	Caller ID (Bellcore or FSK) detection
Console	Asynchronous Console RS-232C DB-9 connector	Asynchronous Console RS-232C DB-9 connector
Tone	DTMF detection/generation DTMF Dialing Support auto-attendant (tone or voice greeting) Provide 2nd dial tone to PSTN	DTMF detection/generation DTMF Dialing Support auto-attendant (tone or voice greeting) Provide 2nd dial tone to PSTN
Network Support	Fixed IP and DHCP PPPoE Behind NAT Router or IP sharing device	Fixed IP and DHCP PPPoE Behind NAT Router or IP sharing device
Configuration & management	Console port, TELNET and Web Browser	Console port, TELNET and Web Browser
Upgrade	Firmware upgrade through network by TFTP/FTP	Firmware upgrade through network by TFTP/FTP
Power	AC power input outlet AC power switch	AC power input outlet AC power switch
Certification	CE Class B, LVD	CE Class B, LVD
Operation Temp	5° C to 40° C	5° C to 40° C
Humidity	10% to 90% (Non-condensing)	10% to 90% (Non-condensing)
Dimension and Weight	Dimension: 221mm(W) x 42mm(H) x 217mm(D) Weight (unit): 1.4 kg	Dimension: 221mm(W) x 42mm(H) x 217mm(D) Weight (unit): 1.4 kg

WellGate 3802A có 2 cổng FXO và 1 cổng RJ-45.