PCM gain adjust
Echo cancellation
：
G.168
，
128ms
Fax
T.38
T.30
VOIP protocol
H.323
：
ITU-T H.323
SIP
：
RFC3261
SIP feature
Support both register and P2P
primary and backup proxy
DNS SRV
：
RFC2782
NAT
Supplyment service
Caller ID
Call hold
（
SIP
）
Call transfer
（
SIP
）
Call forward all
（
SIP
）
Call forward busy
（
SIP
）
Call forward no answer
（
SIP
）
Call forward selective
（
SIP
）
Caller ID hide
（
SIP
）
Anonymous call block
（
SIP
）
Hotline
Do Not Disturb
（
SIP
）
Call hold
（
SIP
）
DTMF Trans Mode
Pass through
RFC2833/RFC4733
Signal
（
SIP INFO/DTMF over H.245
）
Call process tone
China, Taiwan, Japan, Korea, USA, Germany, India, Russia, France,
England, Italy, Brazil, Spain
Self-defined parameters
Auto-learning
CallerID standard
FSK CID(Bellcore Type 1, ETSI Type 1)
、
DTMF-based CID
Reversal polarity
Send
Detection
Fault recovery
Fall back for IP route failure
Lifeline for power failure
Management /maintenance
RS-232 serial interface: configure, maintenance and diagnosis
telnet
Web
Unified network management
Table 8 Characteristics
1
1
.
.
4
4
P
P
r
r
o
o
d
d
u
u
c
c
t
t
D
D
e
e
s
s
c
c
r
r
i
i
p
p
t
t
i
i
o
o
n
n
1
1
.
.
4
4
.
.
1
1
V
V
O
O
I
I
P
P
G
G
A
A
T
T
E
E
W
W
A
A
Y
Y
-
-
3
3
2
2
VOIP GATEWAY-32 provides 32 concurrent calls, 16 concurrent calls,8 concurrent calls
3 type mother broad. And it has 4 type sub card 8FXS, 8FXO, 4FXS4FXO, 4FXS4Lifeline.
Different type card can work together. Those cards can be composed in the following ways.
1
1
.
.
4
4
.
.
1
1
.
.
1
1
O
O
n
n
l
l
y
y
u
u
s
s
e
e
8
8
F
F
X
X
S
S
c
c
a
a
r
r
d
d
If only has 8FXS sub-cards, VOIP GATEWAY32 can be configured into 8-32 FXS ports.
1
1
.
.
4
4
.
.
1
1
.
.
2
2
O
O
n
n
l
l
y
y
u
u
s
s
e
e
8
8
F
F
X
X
O
O
c
c
a
a
r
r
d
d
If only has 8FXS sub-cards, VOIP GATEWAY32 can be configured into 8-32 FXS ports.
