GXW4216 GXW4224 GXW4232 GXW4248
Telephone
Interfaces
16 FXS ports 24 FXS ports 32 FXS ports 48 FXS ports
SIP
Provisioning
16 SIP accounts, 4
profiles
24 SIP accounts, 4
profiles
32 SIP accounts, 4
profiles
48 SIP accounts, 4
profiles
Network
Interface
10/100/1000 Mbps, RJ-45
Number of
Concurrent
Calls (except
when using
SRTP)
16 Concurrent Calls 24 Concurrent Calls 32 Concurrent Calls 48 Concurrent Calls
Voice over
Packet
Capabilities
Voice Activity Detection (VAD) with CNG (comfort noise generation) and PLC (packet loss concealment),
LEC with NLP Packetized Voice Protocol Unit (supports RTP and AAL2 protocol), G.168 compliant Echo
Cancellation, Dynamic Jitter Buffer, Modem detection & auto-switch to G.711
Voice
Compression
G.711 + Annex I (PLC), Annex II (VAD/CNG format) encoder and decoder, G.722, G.723.1A, G.726(ADPCM
with 16/24/32/40-bit rates), G.729, iLBC, G.726 provides proprietary VAD, CNG, and signal power
estimation, Voice Play Out unit (reordering, fixed and adaptive jitter buffer, clock synchronization), AGC
(automatic gain control),
Status output, Decoder controlling via voice packet header
DHCP
Server/Client
DHCP Client only
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 Datapump V.17, V.21, V.27ter, V.29 for T.38 fax relay
QoS DiffServ, TOS, 802.1P/Q VLAN tagging
Transport
Protocol
RTP
DTMF Method In-audio, RFC2833, and/or SIP Info
IP Signaling SIP (RFC 3261)
Provisioning TFTP, HTTP, HTTPS
Security SRTP, TLS/SIPS, HTTPS, 802.1x
Management Syslog support, HTTP/HTTPS and SSH access
Dial Plan Yes
3-way
Conference
3-Way conference with local mixing
Caller ID Bellcore Type 1 & 2, ETSI, BT, NTT, FSK and DTMF-based CID
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