Version 7.2 785 Mediant 800B Gateway & E-SBC
User's Manual 38. Advanced SBC Features
♦ 'Manipulated URI': Source (manipulates the source URI)
♦ 'Remove From Right': "1" (removes the last digit of the extensions, e.g., 601
is changed to 60)
♦ 'Suffix to Add': "0" (adds 0 to the end of the manipulated number, e.g., 60 is
changed to 600)
38.6.3 Configuring Call Survivability for Call Centers
The device supports call survivability for call centers. When a communication failure (e.g.,
in the network) occurs with the remote voice application server responsible for handling the
call center application (such as IVR), the device routes the incoming calls received from the
customer (i.e., from the TDM gateway) to the call center agents.
In normal operation, the device registers the agents in its users registration database. Calls
received from the TDM gateway are forwarded by the device to the application server,
which processes the calls and sends them to specific call center agents, through the
device. Upon a failure with the application server, the device routes the calls from the TDM
Gateway to the agents. The device routes the call to the first available user it founds. If the
call is not answered by the user, the device routes it to the next available user. The SBC
can handle a sequence of up to five users, after which the session is timed out and the call
is dropped.
Figure 38-12: Normal Operation in Call Center Application
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