Call Rerouting

Description

Call Rerouting redirects calls to alternate answering points or devices, under specified conditions.

Call Rerouting may be used to redirect calls:

Call Rerouting is dependent upon the type of calling device, the type of terminating device, and the entries specified in the Call Rerouting forms. Rerouting is also affected by conditions invoked by the user (such as Call Forward).

System defaults are provided in the call rerouting forms (see below for list of forms). These defaults result in internal calls getting rerouted to busy or reorder tone, and incoming trunk calls getting rerouted to the device that originally handled the call (usually an attendant) after the COS-controlled "No Answer - Recall Timer" expires.

Conditions and Feature Interactions

NOTE: If the System Option "Call Rerouting Timer" expires before the forwarded call is answered, the call is rerouted to the Second Alternative configured for the original call destination.

Timer Interactions

Form

Timer

Description

Notes

Class of Service (COS) Options

Call Forward - No Answer (CFNA)

The length of time a call rings a station before it is forwarded to the next programmed destination or before it is rerouted to the First Alternative point.

  • Call Forward takes priority over Call Rerouting.

  • This timer is reset each time the call is forwarded.

  • It is strongly recommended that this value is smaller than either Call Rerouting (System Options) or COS Answer Plus System Reroute timer.

Answer Plus System Reroute Timer for the called party.

The length of time a call rings a station before being rerouted to the 2nd Alternative destination.

  • This timer starts at the initial call setup.

  • If configured (other than zero), this timer overrides the system Call Rerouting Timer.

  • It is strongly recommended that this timer, if configured, is greater than the CFNA timer.

 

No Answer - Recall Timer

The length of time the station programmed as the last alternate answer point will ring before the call is rerouted back to the transferring station, attendant console, or embedded voice mail Auto Attendant.

 

System Options

Call Rerouting

The length of time a call rings a station before being rerouted to the station's 2nd alternative number.

  • This timer starts at the initial call setup and remains active through all COS-controlled call forward programming that may be activated at the destination station(s).

If the timer expires before the forwarded call is answered, the call is immediately rerouted to the 2nd alternative configured for the original dialed destination. See Call Forwarding and Call Rerouting Interaction - Example.

  • If configured, COS option 'Answer Plus System Reroute Time' overrides this timer.

  • It is strongly recommended that this timer is greater than the CFNA timer.

Call Forwarding and Call Rerouting Interaction - Example

Call Processing

The following diagram illustrates the above scenario.

2000 Rings

3000 Rings

4000 Rings

6000 - 2nd Alternative Destination Rings

0 s                                           15 s

              

 

 

|---------------------------------------->

                                               15 s

 

 

(CFNA Timer)

|---------------------------------------->

                  5 s

 

 

                  (CFNA Timer)

|-----------------

 

 

 

 (CFNA Timer)

-----------------------------------------------

|---------------------------------------------------------------------------------------------------------->

                                           (System Call Rerouting Timer: 35 s)

          (No Answer - Recall Timer)

 

Programming

When programming alternate rerouting, you MUST set the No Answer columns in the Call Rerouting First Alternative form to get the system to attempt the second alternative destination (as provisioned in Call Rerouting Second Alternatives form) when the first alternative fails to answer. To illustrate this requirement, consider the following scenario:

Party A calls Party B who is busy. Party B has both first and second alternatives provisioned. The rerouting for Party B on BUSY condition is set to THIS in the First Alternatives form which sends the call to the destination specified. If this destination rings and times out, the secondary alternative destination is attempted but ONLY if the No Answer columns in the First Alternative form for Party B are set to THIS.

To program Call Rerouting treatments:

  1. Call Rerouting Always Alternatives form

For each Always Alternative Number

  1. Call Rerouting First Alternatives form

For First Alternative Number 1

  1. Leave all values set at "Normal".

For other First Alternative Numbers

  1. Call Rerouting Second Alternatives form

For Second Alternative Number 1

  1. Leave all values set at "Normal".

For other Second Alternative Numbers

  1. If calls from an originating device type are to reroute directly to the Second Alternative in Busy, Do Not Disturb, or No Answer conditions, set the value to "This" or "Last".

  2. Enter the directory number to which calls should reroute.

  1. Call Rerouting form

  2. For each directory number that is affected by Call Rerouting, enter the Always Alternative Number for Day Service, Night Service 1, and Night Service 2, and the First and Second Alternative Numbers.

NOTES:

 

  1. (Optional) Class of Service Options form

Device Support

Not applicable

Operation

None