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Product Overview
3
method may be the preferred measure when not using an application layer firewall,
application layer firewalls like to know what applications are flowing though which
ports and it is possible using content types of other applications other than the one you
are trying to let through which has been denied.
User agent server (UAS)
UAS is the server that hosts the application responsible for receiving the SIP requests
from a UAC, and on reception returns a response to the request back to the UAC. The
UAS may issue multiple responses to the UAC, not necessarily a single response.
Communication between UAC and UAS is client/server and peer-to–peer.
Typically, a SIP endpoint is capable of functioning as both a UAC and a UAS, but it
functions only as one or the other per transaction. Whether the endpoint functions as a
UAC or a UAS depends on the UA that initiates the request.
This section introduces the VP530 IP video phone. The VP530 IP video phone is a
endpoint in the overall network topology, which is designed to interoperate with other
compatible equipments including application servers, media servers,
internet-working gateways, voice bridges, and other endpoints. The VP530 IP video
phone is characterized by a large number of functions, which simplify business
communication with a high standard of security and can work seamlessly with a large
number of SIP PBXs.
The VP530 IP video phone provides a powerful and flexible IP communication solution
for Ethernet TCP/IP networks, delivering excellent voice quality. The high-resolution
graphic display supplies content in multiple languages for system status, call history
and directory access. The VP530 IP video phone also supports advanced
functionalities, including LDAP, Busy Lamp Field, Shared Call Appearance and
Network Conference.
The VP530 IP video phone complies with the SIP standard (RFC 3261), and it can only be
used within a network that supports this type of phone.
For successfully operating as SIP endpoints in your network, the VP530 IP video phone
must meet the following requirements:
A working IP network is established.
Routers are configured for VoIP.
VoIP gateways are configured for SIP.
The latest (or compatible) firmware of the VP530 IP video phone is available.
A call server is active and configured to receive and send SIP messages.
Summary of Contents for VP530 IP
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Page 111: ...Configuring Basic Features 99...
Page 153: ...Configuring Advanced Features 141...
Page 171: ...Configuring Security Features 159...
Page 182: ...Administrator s Guide for VP530 IP Video Phone 170 Phonebook on page 266...
Page 183: ...Resource Files 171...
Page 194: ...Administrator s Guide for VP530 IP Video Phone 182 3 Click OK to confirm the resetting...
Page 195: ...Troubleshooting 183...
Page 344: ...Administrator s Guide for VP530 IP Video Phone 332...