Grandstream GXW42xx User Manual - Manual (Page 18)

FIRMWARE 1.0.5.8 GXW42XX USER MANUAL PAGE 16 OF 62
Concurrent
Calls (except
when using
SRTP)
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 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 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 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
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
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
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