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

Providers in database: 6433

Multiple Locations, Single PBX

VoIP PBX systems are useful solutions for establishing telephone communication in companies where offices are located in several places. This system allows connecting all the offices via one telephone network as it supports both local and remote extensions. Its developed features and opportunities make business communications more qualitative and reliable.

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Apelby Communications

We are a Germany-based wholesale carrier with offices in the Czech Republic, Slovenia, Malaysia and Vietnam. We specialize in doing VoIP service since our establishment in 2005 and we have continued to grow in both the number of customers and amount of minutes.

Currently we are interconnected with around 200 carriers specially many Tier-1 carriers as T-Mobile, Telefonica, BT, Vodafone, Verizon, Orange, China Mobile, Bharti Airtel, Tata Communications, BICS... and we are terminating around 150 million voice minutes monthly.