Grandstream GXW4248 Analog VoIP 48 Port FXS Gateway

The Grandstream GXW4248 is a high-density FXS gateway that enables business of all sizes to create a cost-effective hybrid IP and analog telephone system that offers the benefits of VoIP communications and takes advantage of Gigabit speeds while preserving investment on existing analog phones, fax machines, and legacy PBX systems. Product includes 48 FXS ports, a Gigabit network port and features broad interoperability with most service providers, soft-switches, and SIP-based environments.

Product Features:

• A single 10/100/1000Mbps auto-sensing RJ45 port
• TLS and SRTP security encryption technology to protect calls and accounts
• Automated provisioning options include TR-069 and XML config files
• Supports 3-way voice conferencing
• Failover SIP server feature automatically switches to secondary server if main server loses connection
• Supports T.38 Fax for creating Fax-over-IP
• Supports a wide range of caller ID formats
• Use with Grandstream's UCM series of IP PBXs for Zero Configuration
• Supports advanced telephony features, including call transfer, call forwarding, call-waiting, do not disturb, message waiting indication, multi-language prompts, flexible dial plan and more

• Telephone Interfaces: 2 x 50-pin Telco connectors
• Network Interfaces: 1 x 10/100/1000Mbps auto-sensing RJ45 port
• LED Indicators: LAN Link, LAN Activity, Connection per Telephone Port
• LCD Display: Backlit 128x32 graphic LCD display with support for multiple language
• Voice-over-Packet Capabilities: Window based carrier grade line echo cancellation, dynamic jitter buffer, modern detection and auto-switch to G.711
• Voice Compression: G.711, G.723.1, G.726 (40/32/24/16), G.729 A/B, iLBC
• Fax over IP: T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-switch to G.711 for Fax pass-through, Fax data pump V.17, V.21, V.27, V.29 for T.38 fax relay
• QoS: DiffServ, TOS, 802.1P/Q VLAN tagging
• Network Protocols: TCP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS, DHCP, NTP, TFTP, TELNET, PPPoE, STUN, LLDP
• DTMF Method: Flexible DTMF transmission methods including in-audio, RFC2833, and/or SIP INFO
• Signaling: SIP (RFC 3261) over UDP/TCP/TLS
• SIP Server Profiles & Accounts per System: 4 distinct SIP server profiles per system and independent SIP account per telephone port
• Provisioning: TFTP, HTTP, HTTTPS, TR069
• Security: SRTP, TLS/SIPS, HTTPS, 802.1x
• Management: Syslog, HTTPS, Web browser, voice prompt, TR-069
• Power Supply Output: 24VDC, 6.25A
• Power Supply Input: 100 - 240VAC, 50-60Hz
• Operating Temperature: 0 to 40°C
• Storage Temperature: -20 to 60°C
• Humidity: 10 to 90% non-condensing
• Electrical Protection: Over-voltage and over-current protection (ITU-T Recommendation K.21, Basic Test Level)
• Dimensions: 440 x 255 x 44mm
• Unit Weight: 3.21kg
• Package Weight: 4.31kg
• Mounting: Desktop and rack mount with front brackets
• LED Indicators: Power, LAN Link/Activity, Hard Drive Activity
• Short and Long Haul: 2 REN, up to 2km on 24AWG wire
• Caller ID: Bellcore Type 1&2, ETSI, BT, NTT, and DTMF-based CID
• Disconnect Methods: Busy Tone, Polarity Reversal/Wink, Loop Current