Grandstream GXW400x User Manual User Manual
Page 16
FIRMWARE VERSION 1.0.14.1 GXW400X USER MANUAL Page 14 of 60
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
(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
PSTN Fail-over
PSTN failover port on power failure
PSTN failover port on power failure
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
DHCP Server/Client
Yes, NAT Router or Switched Mode
Yes, NAT Router or Switched Mode
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 relay
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 relay
QoS
Diffserv, TOS, 802.1 P/Q VLAN
tagging
Diffserv, TOS, 802.1 P/Q VLAN tagging
Transport Protocol
RTP
RTP
DTMF Method
In-audio, RFC2833, and/or SIP Info
In-audio, RFC2833, and/or SIP Info
IP Signaling
SIP (RFC 3261)
SIP (RFC 3261)
Provisioning
TFTP, HTTP, HTTPS
TFTP, HTTP, HTTPS
Control
TLS/SIPS
TLS/SIPS
Management
Syslog support, HTTP and Telnet
access
Syslog support, HTTP and Telnet access
Dial Plan
Yes
Yes