Specification :

The Soundwin S400 Series VoIP Gateway is fully both SIP and H.323 standard compliant residential gateway that provides a
total solution for integrating voice-data network and PSTN. By simple installation, this revolutionary compact voice over IP ( VoIP)
gateway could be configured as a 2/ 4 port FXS/ FXO VoIP Gateway which provides voice connectivity over the IP network and to the
Public Switched Telephone Network ( PSTN) .The Soundwin Gateway is equipped with a four port Ethernet switch and built-in NAT
router function that provides Internet access using only one IP address.
Besides, it provides high voice quality and optimized packet voice streaming over managed and public ( Internet) IP networks.

VoIP Key Features
Both support SIP and H.323 protocols:
SIP Registration and Digest Authentication Mode; H.323 Gatekeeper Registration.
SIP Single Number / Account for multiple ports.
Caller ID Delivery: FXS support DTMF Caller ID generation.
Flexible and Smart VoIP call Dialing Book: VoIP call Book could provide any application VoIP
call to any type destination ( Domain name / IP address, PSTN or PBX) or hunting number
setting.
AC termination Impedance : 600/ 900 OHM and complex impedance
Answer Supervision for Polarity Reversal Detection and Voice detection
NAT traversal: This feature allow gateway to operate behind any NAT/ Firewall device. Need not
to change any configuration of NAT/ Firewall like setting virtual server.
Smart-QoS: This feature provides good voice quality when user place a VoIP call and also
access internet at the same time. The gateway will automatically start to reserve bandwidth for voice traffic when VoIP
call proceeds.
Call Hunting Facility: This function helps gateway to use the lines effectively. This facility
automatically transfers your incoming call to a free line. Subscribers need not indicate numerous numbers of each port of
gateway.
Voice channels status display: This function display each port status like as on-hook, off-hook,
calling number called number, talk duration, codec.
Flash Detection and Generation Program: FXO support Flash Generation and FXS support Flash
Detection.
FXO answer Mode : FXO provides Ringing Answer, Connection Answer and Non Answer for
configuration.
FXO anti-seized mechanism : FXO provides busy tone auto-learning and manually configuration
busy tone learning..

Telephony Specification:
Voice Codec: G.711( A-law / ¼ -law) , G.729 AB, G.723 ( 6.3 Kbps / 5.3Kbps)
FAX support : T.30 / T.38
Echo Cancellation: G.165/ G168
FXS Tone Table Configuration: Support tone frequency and cadence configuration
FXO hang up detection / anti-seized : Busy Tone Learning Automatically / Manual Busy
Tone Learning
Answer supervision: Support Battery Reverse Detection and Voice Detection.
FXO answer delay time: Support delay 0 – 8000 ms to answer.
Adjustable AC Termination Impedance : 600 / 900 OHM and complex Impedance
Failsafe Mechanism ( FXS relay to FXO) :
Power failed bypass support
Internet Failed bypass ( Optional)
Registered Failed bypass ( Optional)
Unconditional bypass ( Optional)
12K Hz and 16K Hz Pulse Metering ( Customization)
FXS Battery Revere Generation
Support MWI ( Message Waiting Indicator) by SIP Notify.( Optional)

IP Specifications:
H.323 v2/ v3/ v4 and SIP ( RFC 3261) , SDP ( RFC 2327) , Symmetric RTP,
STUN ( RFC3489) , ENUM ( RFC 2916) , RTP Payload for DTMF Digits ( RFC2833) , Outbound Proxy Support.
LAN : Support Virtual Server, DHCP Server
WAN: Support PPPoE client, DHCP client, Fix IP Address, DDNS client
Network Address Translation: Providing build-in NAT router function.
Smart QoS: Guarantee the voice bandwidth
IP TOS ( IP Precedence) / DiffServ

Call Features
Voice channels status display
Direct Dialing Mode : peer to peer call ( support IP Address Call or Domain Name Call)
Register Call Mode : register to SIP Proxy Server or H.323 Gatekeeper
Adjustable volume : - 9 db ~ 9 db
Silence Compression / VAD
Auto Dial for speed
Dynamic Jitter Buffer
Hot-Line and Warm-Line Support

Configuration & Management
Web-based Graphical User Interface
Remote management over the IP Network
FTP firmware upgrade
Backup and Restore Configuration file
Syslog client support
FTP method Auto-Provision ( Optional)

General Specification
AC power : AC100V-240V, DC12V/ 1.5A, 50/ 60 Hz
Temperature: 0° C ~ 40° C ( Operation)
Humidity: up to 90% non-condensing
Emission: FCC Part 15 Class B, CE Mark
RoHS Compliant
Dimension : 260 x 130 x 35 mm
Weight: 900g ( Aluminum )