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Under the NAT, each CPE would
not recognize the IP address and communication port for
others, thus Proxy Server is needed for each CPE to communicate.
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Four ways to pass
through NAT in SIP solution |
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In general, four ways to pass through NAT,
TURN/STUN/UPnP/VPN, are kinds of SIP message handled by
Proxy Server, and RTP is handled by another server. There
are 2 servers applied in this solution. |
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Our
unique fifth way -- All-In-One SIP Proxy Server |
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Our All-In-One Proxy Server not only handles
SIP message but RTP, and this solution need only 1 server.
Therefore it is more economical and it is easier and
faster to clarify/solve the problems than the traditional
NAT Server. |
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Hardware |
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 CPU
: P4 3.0G (above)
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RAM:
512 MB (above) |
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HDD
: 120 GB |
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OS:
Win 2000 Professional (SP4) |
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Software |
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Including
Registrar Server and Redirect Server, it is the Stateful
Proxy. |
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Set
up the routing by country code, prefix code, resource
IP, 070 e-number, or selected ways. |
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Support
Hunting Group, Enum Server, Proxy call Proxy |
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Support
Call Forward: Busy, No answer, Unavailable and Unconditional
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CPE
don't need to set up the STUN, TURN, or UPnP Client to
pass through NAT. |
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The
fifth way to pass through NAT is R&D and tested heavily.
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Firewall
is supported |
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All
SIP message is controlled |
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The
function of supporting NAT is optional |
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The
NAT function selected can control all RTP packets |
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The
four NAT being supported: Full cone, Partial/Restricted
cone, and Symmetric cone |
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The
highest capacity: No Mapping RTP 20,000 users |
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