Technical Specification
Telephone Interfaces
GXW4216/4224/4232: 16/24/32 x RJ11 & 1/1/2 50-pin Telco connectors
GXW4248: 2 50-pin Telco connectors
Network Interfaces
1 x 10M/100M/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 languages
Voice-over-Packet Capabilities
Window based carrier grade line echo cancellation, dynamic jitter buffer, modern detection &
auto-switch to G.711
Voice Compression
G.711, G.723.1, G.76 (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 Passthrough, Fax data pump V.17, V.21, V.27ter, V.29 for T.38 fax relay
Telephony Feature
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
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
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
Universal Power Supply
GXW4232/4224/4216: Output: 12VDC, 5A; Input: 100 ~ 240VAC, 50 ~ 60Hz
GXW4248: Output: 24VDC, 6.25A; Inpu: 100 ~ 240VAC, 50~ 60Hz
Electrical Protection
Over-voltage and over-current protection (ITU-T Reccomendation K.21, Basic Test Level)
Mounting
Desktop and rack mount with front brackets
LED Indicators
Power, LAN Link/Activity, Hard Drive Activity
Caller ID
Bellcore Type 1&2, ETSI, BT, NTT, and DTMF-based CID
Disconnect Methods
Busy Tone, Polarity Reversal/Wink, Loop Current