Grandstream Networks GXW-4004 User Manual

FIRMWARE VERSION 1.0.9.1 GXW40XX USER MANUAL Page 15 of 60
SRTP)
Voice over Packet
Capabilities
Voice Activity Detection
(VAD) with CNG (comfort
noise generation) and PLC
(packet loss concealment),
AEC 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 Activity Detection
(VAD) with CNG (comfort
noise generation) and PLC
(packet loss concealment),
AEC 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 Activity Detection
(VAD) with CNG (comfort
noise generation) and PLC
(packet loss concealment),
AEC with NLP Packetized
Voice Protocol Unit
(supports RTP) G.168
compliant Echo
Cancellation, Adaptive
Jitter Buffer, Fax/Modem
detection & auto-switch to
G.711
PSTN Fail-over
PSTN failover port on
power failure
PSTN failover port on power
failure
N/A
Voice Compression
G.711 + Annex I (PLC),
Annex II (VAD/CNG
format) encoder and
decoder, G.723.1A,
G.726(ADPCM with
16/24/32/40 bit rates),
G.729A/B/E, 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
G.711 + Annex I (PLC),
Annex II (VAD/CNG format)
encoder and decoder,
G.723.1A, G.726(ADPCM
with 16/24/32/40 bit rates),
G.729A/B/E, 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
G.711 + Annex I (PLC),
Annex II (VAD/CNG
format) encoder and
decoder, G.723.1,
G.726(ADPCM with
16/24/32/40 bit rates),
G.729A/B/E, 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
Yes, NAT Router or
Switched Mode
Yes, NAT Router or
Switched Mode
Yes, 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.19,
V.27ter, V.29 for T.38 fax
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.19,
V.27ter, V.29 for T.38 fax
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.19,
V.27ter, V.29 for T.38 fax

Grandstream Networks GXW-4004 Specifications

General

Brand	Grandstream Networks
Model	GXW-4004
Category	Gateway
Language	English