Grandstream GXW4216 Analog VoIP Gateway

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The GXW4216 \ 24 \ 32 \ 48 series gateways open up a new lineup of analogue VoIP gateways that are fully compatible with the SIP standard and with a wide range of VoIP protocol, analog telephone exchanges, and telephones. A rich set of phone features: superb sound quality, simple proving process, customizable dial plan, advanced security settings and superb performance. The GXW42XX Series Gateways are suitable for small and medium-sized organizations. Using Gateways is cost effective, allowing you to use gateways with existing hardware and add VoIP protocol support.



  • Number of FXS 16/24/32 ports with 50-pin Telco connector, as well as LED display for each port
    Gigabit Ethernet and LCD backlight with a resolution of 128×32 with support for various languages
  • Number of SIP profiles 2/3/4 for the system and for the FXS port
    Voice codec and Fax support including G711 (a / μ, Annex I & II), G723.1A, G726 (ADPCM with 16/24/32/40 bit rates), G729 A / B, iLBC, T.38 Fax
  • Improved carrier-grade echo cancellation (128 ms when branching off the communication line)
  • Overvoltage and overvoltage protection (ITU-T K.21 recommendation, basic test level)
  • VMWI support, neon LED indicators and audio playback to indicate message waiting
  • Automatic configuration using an XML configuration file with TR-069 or AES encryption, TLS / SRTP / HTTPS protocols for enhanced security and protection


Telephone Connections GXW4216 /4224/4232: 16/24/32 FXS ports x RJ11 and 1/1/2 50-pin Telco connectors GXW4248: 2 50-pin Telco connectors
Network Interfaces 1 x 10M /100M /1000 Mbps RJ45 port with automatic identification
LED Indicators LAN link, LAN Activity, connection for each telephone port
LCD Backlit 128×32 graphic LCD display with multi-language support
Batch Mode Speech Functions Improved carrier-grade echo cancellation (128 ms when branching off the communication line), dynamic delay jitter buffer, modem detection and automatic switching to G.711
Speech Compression G.711, G.723.1, G.726 (40/32/24/16), G.729 A /B, iLBC
IP Fax Fax relays of the third group of the T.38 standard with data transfer rate support up to 14.4 Kbps and automatic switching to G.711 for fax transmission, fax-data transfer-receive function block V.17, V.21 , V.27ter, V.29 for fax relay of T.38 standard
Phone Features Displays or blocks the caller’s number, notifies you of an incoming call, blind or accompanied call transfer, call forwarding, barring incoming calls, three-way conference call, dialing the last incoming call number, paging, incoming message LED (NEON LED) and intermittent tone, auto redial
QoS DiffServ, TOS, 802.1P /Q VLAN tagging
DTMF Method Custom DTMF Transmission Methods, including In-audio, RFC2833, and /or SIP INFO
Signal Transmission SIP (RFC 3261) over UDP /TCP /TLS
SIP server profiles and accounts for each system 4 separate SIP server profiles for each system and separate SIP accounts for each telephone port
Provisioning TFTP, HTTP, HTTPS, TR069
Security Provision SRTP, TLS /SIPS, HTTPS, 802.1x
Manage Syslog, HTTPS, web browser, telnet, voice menu (IVR), TR-069
Universal Power Supply GXW4232 /4224/4216: Output: 12 V DC, 5 A; Input: 100 ~ 240 VAC, 50 ~ 60
Hz; GXW4248: Output: 24 V DC, 6.25 A; input: 100 ~ 240 V AC, 50 ~ 60 Hz
Environmental Specs Operation: 0°C ~ 45°C; Storage: –20°C ~ 60°C; Humidity: 10% ~ 90% (non-condensing)
Electrical Protection Overvoltage and surge protection (ITU-T K.21 Recommendation, basic test level)
Physical Characteristics Device Size:
440 mm (D) x 255 mm (W) x 44 mm (H) (1U) (GXW4248)
440 mm (D) x 185 mm (W) x 44 mm (H) (1U) (GXW4216 /4224/4232)
Install Desktop and rack mounting with front brackets
Near and far distance 2 REN, up to 1500 feet for 24 AWG wire
Caller Number Bellcore type 1 & amp; 2, ETSI, BT, NTT, and DTMF-based CID
Disconnect Methods Signal “Busy”, change /instability of polarity, current in the circuit
Regulatory Compliance US Federal Communications Commission: Part 15 (CFR 47) Class B Council of Europe: EN55022 Class B, EN55024, EN61000-3-2, EN61000-3-3, EN60950-1, RoHS C-TICK: AS /NZS CISPR 22 class B, AS /NZS CISPR 24, AS /NZS 60950 ITU-T K.21 (basic level of verification); UL 60950 (power adapter)