In the section Callback one sets parameters of Callback listeners. Default values should work fine, so do not change this settings without a reason.
Regular Callback Settings should be configured to fit one's needs.
Regular Callback settings node in VoipSwitch Manager.
In this program there are 4 groups of settings:
Common,
ANI Callback,
PIN callback
DID callbackAll parameters set here are subsequently used by a twin program which functions as a service in the Windows system and is called "Calls Reader Service". One should remember that after every change the service "Calls Reader Service" should be re-started (in order to download new settings).
The purpose of the section Common is to determine the settings used by the Service "Calls Reader Service" to connect to VoipSwitch. One should set the IP number of a server where VoipSwitch functions and the port are used as SMS Callback (by default it is port 1802).
The parameter "Checking interval" determines the frequency - how many seconds the service "Calls Reader Service" checks for new connections with the number which activates callback. If this parameter is too big, the period of waiting for calling back will be to long; if this parameter is too small, the user may not have enough time to answer the call or the system may work too slowly.
From experience it is known that the optimum time is 3-5 seconds.
After finding out in the database table "CallsFailed" about an attempt to connect with the number which activates callback, the Service "Calls Reader Service" collects "Caller ID" and sends the information to VoipSwitch in order to try and execute a connection. The time after which this information is sent is known as "Sending delay".
At the initial phase of using this service, one may select the option "Make logs". This option enables recording additional information about the functioning of the service "Calls Reader Service" in the Windows system logs. Later this option may be switched off.
The purpose of the section ANI Callback is to define the number which activates callback and the numbers which the "Caller ID" will be connected with. It is possible to define one or several numbers. (It is not recommended that more than 5 numbers should be defined as this may slow down the functioning of the system). If more numbers are defined which activate callback and more than one number in the table 'IVR numbers', the appropriate number of the table 'Numbers' will be connected with a number in the same position in the table 'IVR numbers'.
A part of ANI Callback is used for the clients who activate callback only from the numbers authorised earlier.
See register option for more information about saving authorised numbers.
Section PIN Callback is used during the execution of callback connections when "Caller ID" is not recognised. This option may
be switched on and off with the check box "Check PIN if ani couldn't be found". Now it is necessary to verify a user who will be used to execute return connections, in the section "Client callback".
It is necessary to select a user in the section PIN Callback from the list "Client callback", but the user will not bear any costs unless the PIN authorisation is used.
Defining the numbers and the IVR numbers assigned to them is similar to such defining in the case of ANI Callback.
One must remember that a number defined in the table 'IVR numbers' should indicate the PIN action of the system IVR.
Section DID Callback. This type of callback allows this service to work even when the "Caller ID" is not transferred to the system VoipSwitch. In this type, each client is assigned a unique number to which the client calls. The call is not connected as in the case of other callback calls but the system, on the basis of this target number, calls back to a previously defined number assigned to this client. All target numbers defined for clients must start with a common prefix (see Fig. 4, number 2000 in the "Dialing plan prefix").
In the same location, one defines the number the clients will be connected with (number 777 entered in the dialing plan). This is a number for the IVR action of the system VoipSwitch. This is an action of the type "Ask for number" because the clients do not require authorisation. Calling a specific target number triggers the connection of a particular client number with the number assigned to the IVR action.
There is no need to call from specified number (as before), so Client is able to trigger callback call from any phone device, the system will call back to specified number assigned to this Client .
When adding DID callback prefix use number that is not used in any of existing dialing plans or add dedicated dialing plan entry for this prefix and route to offline gateway as before
Assigning the activating numbers and the numbers to which the callback will be executed for individual clients may be done in the window which appears after pressing the button "Clients DID numbers".
DID numbers window.
In the left part of this window, there are the already assigned activating numbers together with relevant users and the numbers which will be used to connect with a client. In the above image, in the first line there is information that if a call to the number 2000 1 is executed and is not connected, then the system should call back as the callback client of the login "800123" to the number 800123 and then connect this call with the number 777 defined in the previous window. The numbers DID, presented here, constitute only the last part of the activating number (in this example just "1" for number "20001").