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VP-102 / VP-202 User Manual
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5.
DTMF Signaling
– This parameter sets the method of sending DTMF signals.
Inband
means
that the DTMF signal is sent as an analog signal via the voice channel.
Outband
means that the
DTMF signal is sent as DTMF command via the data channel. Both
RFC2833
and
SIP INFO
methods are supported. For
RFC2833,
a DTMF payload type is required and the default type is
set to 101.
6.
Signaling QoS
– This parameter sets the QoS mode for VoIP Signaling for better response time
and more reliable VoIP Call signaling. Both IP TOS and Diffserv modes are supported. Please
check with your network administrator or ISP for the correct setting.
7.
Signaling Encryption
– Three types of encryption are supported and they can be enabled
individually. These are non-standard encryption for signaling. Please make sure that your SIP
Service Provider can support the encryption(s) enabled.
a)
RC4
– RC4 Encryption Key is required when it is enabled.
b)
Fast
–
c)
VOS
– This encryption is developed by a network equipment vendor in Nanjing, China.
d)
AVS
– This encryption is developed by a network equipment vendor in Shanghai, China.
e)
ET263
– This encryption is supported by major network equipment vendors in China.
8.
Signaling NAT Traversal
– NAT Traversal is an algorithm designed to solve a common problem
in TCP/IP networking in establishing connections between hosts in private TCP/IP networks that
use NAT devices. This parameter only sets the NAT Traversal mode for VoIP signaling. The 2
methods supported are
STUN(RFC3489)
and
Relay Proxy
. A STUN Server is required for
STUN(RFC3489)
.
