Avaya IP Line Bedienungsanleitung PDF herunterladen (Seite 79)

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Features Page 79 of 910

IP Line Description, Installation and Maintenance

the call-associated resources are not used, but they still exist on the Call

Server since they are not released. To prevent this, the ten-minute Call Server

ACF timer is introduced for each call. The timer prevents call

processing-related resources from being unnecessarily used when an IP

Phone that had an active call unregisters and never reregisters.

The timer is set if:

• the ACF call status is UNREGISTERED; that is, when both parties go

offline.

• only one of the parties is offline, and the other party does not support

disconnect supervision.

ACF scenarios

Table 13 describes ACF behavior in different scenarios.

Table 13

ACF behaviors (Part 1 of 8)

Scenario Result

TLAN subnet failure:

• A call is established between IP Phones A

and B registered with the same node.

• TLAN subnet goes down.

• The IP Phones detect the connection is

lost and periodically try to reregister.

• The TLAN subnet is up shortly (less than

10 minutes), or an election is called and

another accessible LTPS node acquires

the node IP address. The IP Phones

reregister with the node again.

The call is not lost as the IP Phones

reregister.

In this scenario, the call exists on the Call

Server during the failover time and has the

following transitions:

UNREGISTERED ->HALF-REGISTERED ->

NO ACF

1 2 ... 74 75 76 77 78 79 80 81 82 83 84 ... 911 912

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