Configure The Sip Proxy Server; Configure The Subscriber Information Parameters; Managing Nat Transversal With Phones - Cisco 7800 Series Administration Manual

Cisco IP Phone Installation
Step 2
In the SIP Settings section, set the parameter values as described in
Step 3 Click Submit All Changes.

Configure the SIP Proxy Server

Before you begin
Access the phone administration web page. See
Procedure
Step 1
Select Voice > Ext(n), where n is an extension number.
Step 2 In the Proxy and Registration section, set the parameter values as described in
page
Step 3 Click Submit All Changes.

Configure the Subscriber Information Parameters

Before you begin
Access the phone administration web page. See
Procedure
Step 1
Select Voice > Ext(n), where n is an extension number.
Step 2 In the Subscriber Information section, set the parameter values as described in
page
Step 3
Click Submit All Changes.

Managing NAT Transversal with Phones

Network Address Translation (NAT) allows multiple devices to share a single, public, routable, IP address
to establish connections over the Internet. NAT is present in many broadband access devices to translate public
and private IP addresses. For VoIP to coexist with NAT, NAT traversal is required.
Not all service providers provide NAT traversal. If your service provider does not provide NAT traversal,
you have several options:
• NAT Mapping with Session Border Controller
• NAT Mapping with SIP-ALG Router
• NAT Mapping with a Static IP Address
286.
288.
Access the Phone Web Page, on page
Access the Phone Web Page, on page
Cisco IP Phone 7800 Series Multiplatform Phones Administration Guide
Configure the SIP Proxy Server
SIP Settings, on page 280.
80.
Proxy and Registration, on
80.
Subscriber Information, on
59