Polycom MGC-100 Getting Started Manual page 71

13. Define the following parameters:
Table 3-13: SIP Dialog Box Options
Field
Servers
Get SIP Servers
Automatically
Configure SIP
Servers Manually
Registrations
Registration Mode
Chapter 3 - Initial System Configuration
Description
Select this option to automatically retrieve the IP
address of the SIP servers.
This option is enabled if DHCP is enabled or if DNS
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.
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 "To configure
the SIP servers manually:" on page 3-43.
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. Select
the mode according to the method supported by the
proxy, or if all three methods are supported, select
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.
3-41