User's Manual

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GXW42xx User Manual
Version 1.0.5.43
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
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
Polarity Reversal /
Wink
Yes
Network
Connectivity
IPv4, TCP/UDP, RTP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP,
SSH, PPPoE, STUN