Nortel Networks NN10029-111 사용자 설명서
Overview
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Copyright © 2003, Nortel Networks
MCP SIP Application Module Basics
Nortel Networks Confidential
Network address book
Client Address Book information is stored in the network so that it can
be accessed from all clients. The information is downloaded in bulk
whenever a client comes on line (either through a Simple Object
Access Protocol [SOAP] interface or direct database access depending
on the client).
be accessed from all clients. The information is downloaded in bulk
whenever a client comes on line (either through a Simple Object
Access Protocol [SOAP] interface or direct database access depending
on the client).
In order to receive updates to the Address Book after the initial
download, the client subscribes to the Address Book event package
and updates it as needed. Whenever an update is made through the
Personal Agent or one of the clients, a Notify message is sent to the
client indicating which entries have changed. The client can then
incrementally update their view of the information (again either through
a SOAP interface or direct database access depending on the client).
download, the client subscribes to the Address Book event package
and updates it as needed. Whenever an update is made through the
Personal Agent or one of the clients, a Notify message is sent to the
client indicating which entries have changed. The client can then
incrementally update their view of the information (again either through
a SOAP interface or direct database access depending on the client).
A List of Buddies is incorporated as part of the Address Book. Each
subscriber must create their own personal Address Book and designate
their own Buddies. For each of these specified entries, the client
automatically subscribes to their presence event package. This allows
them to monitor and update the network presence of each Buddy (for
example, online or offline).
subscriber must create their own personal Address Book and designate
their own Buddies. For each of these specified entries, the client
automatically subscribes to their presence event package. This allows
them to monitor and update the network presence of each Buddy (for
example, online or offline).
Overload control
Overload Control monitors the Incoming Protocol Message Queue
Length. If this queue length crosses a configurable threshold value, the
system performs Session Blocking, allowing no new incoming requests
to process. The system does, however, continue to process requests
for an established session. For rejected requests, the system sends a
“503 Service Unavailable” response with a Retry-After header, which
specifies the amount of time a client should wait before retrying the
request.
Length. If this queue length crosses a configurable threshold value, the
system performs Session Blocking, allowing no new incoming requests
to process. The system does, however, continue to process requests
for an established session. For rejected requests, the system sends a
“503 Service Unavailable” response with a Retry-After header, which
specifies the amount of time a client should wait before retrying the
request.
Note that multiple thresholds may be crossed simultaneously. If this
occurs, the appropriate actions are invoked and are not cleared until all
aspects of the system have crossed below the assigned threshold
value.
occurs, the appropriate actions are invoked and are not cleared until all
aspects of the system have crossed below the assigned threshold
value.