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The Differences in Call Survival and Call Recovery

While investigating High Availability (HA) in CTI and PBX systems you will often find mention of Call Recovery. Another term you run into is Call Survival, which is often used interchangeably with Call Recovery incorrectly. This is because each is a different approach to solving a problem. The problem being a failure which would interrupt the calls of a system.

With Call Survival when a failure happens the caller and callee do not have to take action to continue their call as it survives the failure. At a high level this is done by reacting to the failure quickly and re-routing the audio path around the failure.

With Call Recovery when a failure happens the recovery is different depending on the system. Sometimes the caller will need to initiate the redial the callee or it could be an automated process but the callee still have to answer this new call.

From a user perspective the better option is Call Survival as they may only experience a momentary interruption in their audio as the path is rerouted around the failure instead of having to re-initiate a call to recovery it.

The Q-Suite platform supports Call Survival with the help of the Overseer Watchdog providing HA for other services in addition to being one part of the Call Survival solution.

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Contact Center ACD interface through Asterisk Manager Interface (AMI)

Large contact center installations with many concurrent users will scale to multiple Asterisk servers. This is the norm when building out a multi-tenant contact center or PBX roll out. With the growing popularity of Asterisk, it is being adopted for special mission critical applications with large concurrent users. In all such applications, the call center ACD plays a vital roll in managing queues and users. It routes the calls in the queues to the appropriate user console based on skills based routing and queue prioritization.

For more dynamic applications, the console application would want to have the real-time status information of all the calls in the queues. This data provides an opportunity to build additional powerful logic in the user consoles to better manage the calls. Such user consoles for customer service representatives and supervisors can empower them to intervene and handle calls based on the business rules of the organization.

A contact center ACD will manage multiple Asterisk telephony servers in a cluster through the Asterisk Manager Interface. Console applications can have continuous feed of the dynamic channel status information from all the incoming and outgoing calls handled by the call center ACD, by incorporating a listener in the console software. With adequate filters, this listener can be tuned to feed data to a versatile call handling logic, taking advantage of the real-time state information of all the channels, queues and users of the call center software.