# Enabling Call Me Back

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Descriptions

Call Me Back feature is a free of charge service that allows out-of-credit customers to request from another local network prepaid or postpaid user to call them. Customer can initiate Call Me Back notification by either USSD or short message:

•Dial the USSD service number to activate call me service. Follow the prompt to reply destination number.

•Edit a short message contains destination number and send it to the toll-free Call Me service number.

After receives the request, the UltraWAVE system will send a short message to the destination number with the preset Call Me Back message. Please note that the destination number must belong to local network.

Implementation

| Configure SCCP Parameters

Refer to Enabling Prepaid Service to configure SCCP parameters.

| Configure PPS Parameters

1.Go to EMS >Configuration >NSS >PPS.

2.Make sure the System ID at the upper right corner displays PPS_pub, click the button.

1.Click to open the SRF Parameters >Service Number tab.

2.Click the hyperlinked index number of Call Me Back Service Number to open its option window.

3.Configure the service number for Call Me Back service.

4.Click the button to update parameters to application servers.

1.Click to open the SRF Parameters >USSD Service Number tab.

2.Click the hyperlinked index number of the Call Me Back service to open its option window.

3.Configure the Call Me Back access code and click highlight SAVE after change.

4.Click the button to update it to application servers.

1.Click to open the SRF Parameters >USSD Service Key tab.

2.Click the hyperlinked index number of the Call Me Back service to open its option window.

3.Configure the Call Me Back service key and click highlight SAVE after change.

4.Click the button to update it to application servers.

1.Click to open the Service Control >SMS Sentence tab.

2.Click the hyperlinked index number of the Call Me Back relevant sentences to open the configuration window.

3.Edit the sentence in the Language x Content line, click highlighted SAVE when it's done.

4.Click the button to update parameters to application servers.

Sub-parameter | SMS/USSD Sentence
Call Me Back Prompt (USSD) | Please enter the destination number with Country Code and National Destination Code:
Call Me Back Notification | asked for your call
Call Me Back Limited | Your call me back requests reached the max allowed times.
Call Me Back Advertisement | Please return the call. Welcome to use the call me back service.

| Customize Call Me Back Attributes in COS

1.Click to open the Service Control >COS tab.

2.Click the hyperlinked index number to open an existing COS table, or click New to create a new COS table.

3.In the Service Control table, configure the relevant parameters given in the following table.

4.Click the button to update parameters to application servers.

Sub-parameter | Description (Click highlight SAVE after change) | Optional Values
Call Me Back Threshold | Subscriber is not allowed to apply call me back service when his remaining balance is more than this value. Unit is minimum currency unit. •0 = No limitation | 0 - 255
Call Me Back Max Times | The maximum allowable times of call me back service per month. •0 = No limitation

| Configure SMPP Parameters

Refer to Enabling Interactive SMS to configure SMPP parameters.

| Configure SMSC Parameters

1.Go to EMS >Configuration >NSS >SMSC.

2.Make sure the System ID at the upper right corner displays SMSC_pub, click the button.

1.Click to open the SMPP tab.

2.Click the hyperlinked index number of New to open an Option window.

3.Configure the necessary parameters given in the following table to bind the balance transfer service number with the configured SMPP connection.

4.Click the button to update parameters to application servers.

Sub-parameter | Description (Click highlight SAVE after change) | Recommended Value
Link Alias | It is the same Link Alias as that in the previous SMPP configuration. Use the PPS inquiry number by default. | PPS Inquiry Number
Session Type | Specify how the local SMPP entity shall bind to the remote SMPP entity. Select bindTRX as a transceiver. | bindTRX
Service Number | Enter the PPS balance transfer service number which configured in PPS >SRF Parameters >SRF Number >Credit Transfer Service Number. | Call Me Back Service Number
DCS | Data Coding Scheme. Reserved as smpp7def8. | smpp7def8
Platform ID | The served MSC platform. Reserved as Ignore. | Ignore
Time to Live | Define the maximum duration of a pending message which should be kept in sending array till reaches the called subscriber. Messages can't send out in the validity period will be deleted. Unit is second. Reserved as 18 hours. | 64800
Manipulation Flag | Enable or disable CLI Manipulation in XAPP setting. Reserved as Disable. | Disable
TON | Indicate Type of Number for destination. Reserved as Unknown. | Unknown
NPI | Indicate Numbering Plan Indicator for destination. Reserved as Unknown. | Unknown

| Function Presentation (by short message)

1.Subscriber A edits the called subscriber number B and sends it to Call Me Back service number. <Number B> Please note the <Number B> is the whole number with CC and NDC. 2.A notification short message is sent to subscriber B (the sender's number is <Number A>): <Number A> asks for your call at <Time>. Please return the call.

| Function Presentation (by USSD)

1.Subscriber A dials the Call Me Back USSD service code to initiate Call Me Back dialog.

For example:

•Set 124 as Call Me Back USSD service code, dial *124# to initiate a USSD dialog.

2.If the subscriber A's call me back requests reached the maximum allowed times, system responds:

Your call me back requests reached the max allowed times.

3.The system replies USSD response:

Please enter the destination number with Country Code and National Destination Code:

4.Subscriber A responds by entering appropriate content:

<Number B>

5.A notification short message is sent to subscriber B (the sender's number is <Number A>):

<Number A> asks for your call at <Time>. Please return the call.

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