Grandstream GXW 4004
Grandstream GXW 4004 offers small organizations, home users, remote offices and companies with a territorial work system a high-performance solution with excellent price/quality ratio to more effectively manage the cost of communication, while expanding the functionality of existing telephone systems in organization. Grandstream GXW 4004 is a solution, which easily integrates into existing VoIP FXS phone systems and FXO gateways.
GXW 4004 was designed to be compatible with popular IP PBX soft switches and a big number of various SIP oriented devices. The device was developed using open standards. GXW4004 gateways have compact design, extraordinary quality of voice transfer, rich functionality, high security and unsurpassed price/quality ratio.
Technical Characteristics:
4 analog FXS ports
2x RJ-45 ports
TFTP and HTTP
SIP protocol (RFC3261)
T38 Support
Web Interface and configuration
RTP/RTCP/PPPoE support
QoS: Diffserv, TOS, 802.1p/q support
1 PSTN linear port RJ11 for Fail-Over PSTN
Registration of up to 2 SIP account per port
Audio codecs: G711u/a , G723, G726, G728, G729a/b/e, iLBC и T.38
DHCP client/server, NAT router
Security features TLS/SIPS/HTTPS/Telnet
Power 12V DC
FCC, CE standards
“Extension” - is the extension of the telephone line (PBX) or the Centrex system. It works as an association and allows calling to certain telephone sets without the necessity of dialing the telephone number, but only by dialing a short combination of digits, reaching the desired subscriber.
ISD Networks
ISD Call is one of the leading VoIP (Voice over Internet Protocol) Service Provider specialising in Internet Telephony Solutions for various businesses, Our vision is to emerge as a major VoIP Service Provider by integrating telephony system with the cont
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