Linksys SPA932 Manual De Usuario
Linksys SPA9x2 Phone Administration Guide
Cisco Confidential--First Draft
12
Network Address Translation and SPA9x2 Phones
Introducing Linksys SPA9x2 Phones
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Routers and Service Provider Support of NAT
NAT allows multiple devices to share the same public, routable, IP address for establishing
connections over the Internet. A router forwards packets between the Internet and the internal,
private network.
connections over the Internet. A router forwards packets between the Internet and the internal,
private network.
NAT mapping is the association between a private address and port and a public address and
port . The mapping is maintained for a short period of time, varying from a few seconds to
several minutes. The mapping time is extended when a source device sends a packet.
port . The mapping is maintained for a short period of time, varying from a few seconds to
several minutes. The mapping time is extended when a source device sends a packet.
Session Border Controllers
The service provider can support NAT mapping using a session border controller. With a session
border controller, you do not have to manage NAT on the SPA9x2.
border controller, you do not have to manage NAT on the SPA9x2.
If the service provider does not support session border control, use the NAT Support
Parameters provided by the SPA9x2, such as:
Parameters provided by the SPA9x2, such as:
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Outbound Proxy (see
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