Avaya 3100 Mobile Communicator Deployment Betriebsanweisung Seite 36

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For more information, see Avaya 3100 Mobile Communicator and Avaya Communication
Server 1000 Solution Integration Guide, NN49000-315 and Avaya Communication Server
1000 Features and Services Fundamentals, NN43001-106.
Avaya CS 1000 system redundancy
The clients support a high availability configuration for improved redundancy and failover.
Configure the client with primary and secondary proxy addresses that refer to different NRS-
SPSs. The clients use an options heartbeat to determine proxy availability. You can configure
the heartbeat time.
The clients also support existing SIP redundancy mechanisms in both communication servers
within a SIP deployment.
Call Forward No Answer feature interactions
It can be necessary to increase the Call Forward No Answer (CFNA) timeout for mobile client
users. The UEXT extends all calls to the Avaya 3100 Mobile Communicator Gateway. The
Avaya 3100 Mobile Communicator Gateway then presents the incoming call to the Avaya 3100
MC - Client over the cellular data channel of the Avaya 3100 MC - Client (using HTTP/HTTPS).
It can take a few seconds for the data transmission to reach the client, depending on the current
state of the mobile client. If the CFNA timeout is too short, users do not have reasonable time to
(potentially) log on and answer the call before the call server invokes CFNA and sends the call
to the CFNA destination.
To increase the CFNA timeout, configure the CS 1000 using LD 15 and LD 11.
LD 15 configures the CFN0, CFN1, and CFN2 indexes:
LD 15
REQ: chg
TYPE: rdr
TYPE RDR_DATA
CUST 0
OPT
FNAD
FNAT
FNAL
CFTA
CCFWDN
CFN0
CFN1 6
CFN2
DFN0
DFN1
DFN2
MDID
NDID
Interworking requirements with CS 1000
36 Deployment Guide October 2010
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