Polycom MGC Administrator, Руководство администратора

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Chapter 3 - Defining Network Services
3-74
13. Define the following parameters:
Table 3-21: SIP Dialog Box Options
Field Description
Servers
Get SIP Servers
Automatically Select this option to automatically retrieve the IP
address of the SIP servers.
This option is enabled if a DHCP or a DNS server is
enabled and the local domain name is defined (as it
is required for locating the SIP proxy). If both are
enabled, DNS resolution precedes DHCP as it
provides the most current information.
Configure SIP
Servers Manually Select this option to manually configure the SIP
servers. After selecting this option click the
SIP
Servers button to access the manual configuration
window. For detailed information see “Defining SIP
Servers” on page 3-77.
Registrations
Registration Mode The Registration Mode determines how the proxy will
direct the incoming SIP call to the MCU’s IP card that
has enough resources to handle the call. The
selection is done according to the method supported
by the proxy. If all three methods are supported, the
selection is done according to the required working
method.
•
Redirect – The conference registers with the
proxy using the IP address of a specific IP card.
The proxy directs the incoming call to the
registered card. If the card has no available
resources, the MCU returns to the proxy the IP
address of the card that does have enough
resources and the proxy redirects the incoming
call to that IP card.
• Forking – Each IP card is registered in the proxy
with all the conferences. The proxy directs the
incoming call to all cards simultaneously. The
MCU ensures that only the card that has enough
resources answers the call.