Overview of Grandstream GXW4248 V2
The Grandstream GXW4248 V2 is a high-density, Gigabit FXS gateway with 48 FXS ports that lets businesses of all sizes create a cost-effective hybrid IP and analog telephone system. It preserves investment in existing analog phones, fax machines and legacy PBX systems while adding the benefits of VoIP. A Gigabit network port, 4 SIP server profiles with an independent SIP account per port, T.38 fax, HD wide-band codecs and carrier-grade security with SRTP/TLS, secure boot and dual firmware images make it a reliable choice. Its 1U rack-mount chassis suits hotels, hospitals, schools, residential compounds and offices that integrate many analog extensions with an IP PBX such as Grandstream UCM.
Technical Specifications – Grandstream GXW4248 V2
Interfaces
| Telephone Interfaces | 2 50-pin Telco connectors |
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| Network Interfaces | 1 x 10M/100M/1000Mbps auto-sensing RJ45 port |
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| LED Indicators | Power, LAN Link, LAN Activity, Connection Per Telephone Port |
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| LCD Display | Backlit 132x32 graphic LCD display with support for multiple languages |
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Voice
| Voice-over-Packet Capabilities | Window based carrier grade line echo cancellation, dynamic jitter buffer, modem detection & auto-switch to G.711 |
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| Voice Compression | G.711, G.723.1, G.726-32, G.729, G.722 (wide band), iLBC, Opus |
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| Fax over IP | T.38 compliant Group 3 Fax Relay up to 14.4kbps and auto-switch to G.711 for Fax Pass-through, Fax data pump V.17, V.21, V.27ter, V.29 for T.38 fax relay |
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Telephony
| Telephony Features | Caller ID display or block, call waiting, blind or attended call transfer, call forward, do not disturb, 3-way conference, last call return, paging, message waiting indicator LED (NEON LED) support and stutter tone, auto dial |
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| Caller ID | Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID |
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| Disconnect Methods | Busy Tone, Polarity Reversal/Wink, Loop Current |
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| Short/Long Haul | 2 REN: Up to 6000ft on 24 AWG |
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Network
| QoS | DiffServ, TOS, 802.1P/Q VLAN tagging |
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| Network Protocols | TCP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS, DHCP, NTP, TFTP, PPPoE, STUN, LLDP |
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| DTMF Method | Flexible DTMF transmission methods including in-audio, RFC2833, and/or SIP INFO |
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| Signaling | SIP (RFC 3261) over UDP/TCP/TLS |
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| SIP Server Profiles & Accounts Per System | 4 distinct SIP server profiles per system and independent SIP account per telephone port |
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Management
| Provisioning | TFTP, HTTP, HTTPS, FTP, FTPS, TR069 |
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Security
| Security | SRTP, TLS/SIPS, HTTPS (AES-128 encryption for SRTP, TLS and HTTPS), SecureBoot, random admin passwords |
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Management
| Management | Syslog, HTTPS, SSH, Web browser, voice prompt, TR-069, GDMS |
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Power
| Universal Power Supply | Output: 24VDC, 6.25A, maximum 150W; Input: 100 ~ 240VAC, 50 ~ 60Hz |
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Environmental
| Environmental | Operating: 0°C ~ 40°C; Storage: -10°C ~ 60°C; Humidity: 10% ~ 90% (non-condensing) |
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| Electrical Protection | Over-voltage and over-current protection (ITU-T Recommendation K.21, Basic Test Level) |
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Physical
| Unit Dimension | 440mm (L) x 255mm (W) x 44mm (H) (1U) |
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| Unit Weight | 3.36KG |
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| Package Weight | 4.92KG |
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| Mounting | Desktop and rack mount with front brackets |
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Compliance
| Compliance | FCC: Part 15 (CFR 47) Class B; IC: ICES-003; CE: EN55032 Class B, EN55035, EN IEC 61000-3-2, EN61000-3-3, EN IEC 62368-1, RoHS; C-TICK: AS/NZS CISPR 32 Class B, AS/NZS 62368.1, AS/CA S003.1; ITU-T K.21 (Basic Test Level); UL 60950 (power adapter) |
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Source: Grandstream official website and datasheet. Specifications are subject to change by the manufacturer.
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