In some cases, the outbound call rates while roaming are somewhat higher than the inbound call rates. Using the Callback technology, MNOs may reduce their subscribers’ costs and, consequently, improve their loyalty. The proposed solution is designed for the automatic provision of the callback service to roaming subscribers. In order to provide the service, the platform intercepts the call and, without picking up, plays a notification, and then drops the call. After that, calls are made to both subscribers (the customer who ordered the service and the recipient); if they both pick up, a connection is established between them, and the call is billed. The platform uses the Intelligent Network protocols (IN CAMEL/INAP).

1. SC.RoamingAutoCallback
Auto callback platform
for subscribers in roaming
Krasnoyarsk, 2014

2. SC.RoamingAutoCallback
Introduction
In some cases, the outbound call rates while roaming
are somewhat higher than the inbound call rates
Using the Callback technology,
MNOs may reduce their subscribers’ costs
and, consequently, improve their loyalty

3. The proposed solution is designed
for the provision of the callback service
to roaming subscribers
SC.RoamingAutoCallback
What we offer
The platform uses the Intelligent Network
protocols (IN CAMEL/INAP)

4. SC.RoamingAutoCallback
Reception of callback requests
SMS/USSD
commands
Automatic callback
without need for request
or

5. SC.RoamingAutoCallback
Callflow
MSISDN
Sub B
1 2
The platform intercepts the call and,
without picking up, plays a notification,
and then drops the call
SC.RACB
Subscriber A call to Subscriber B

6. SC.RoamingAutoCallback
Callflow
MSISDN
Sub B
3
4
If they both pick up, a connection
is established between them,
and the call is billed
Calls are made to both subscribers
(the customer who ordered the service and the recipient)
Sub A Sub B
SC.RACB

7. SC.RoamingAutoCallback
Features
 Reception of service connection/disconnection requests
(SMS/USSD commands, HTTP provisioning)
 Management of IN subscriber triggers in HLR when
the service is connected or disconnected
 Multilingual support
 Work logging, monitoring, and statistics collection
 Multi-user platform management web interface
with different access levels (administrator, operator)

8. SC.RoamingAutoCallback
Features
 Flexible request processing:
o SMS notification of subscribers about the status of their requests
o Notification of subscribers about registering in the network
of a non-recommended MNO
o Management of acceptable groups of directions both for Subscriber A
and Subscriber B. The direction sign is recorded in the call details
o The logic for postpaid and prepaid subscribers may vary

9. SC.RoamingAutoCallback
Integration scheme
MSC/VLR
SC.RoamingAutoCallback
HLR USSDС/SMSC
Administrator’s
web interface Billing
MAP CAMELSIP SMPP
HTTP CAMEL HTTP CDR

10. SC.RoamingAutoCallback
Benefits & advantages
 The subscribers are offered an opportunity to save money while
roaming, which results in higher subscriber loyalty
 The convenience of the service promotes higher traffic and higher
ARPU by including subscribers who otherwise would not have
been able to make their calls
 SIP and CAMEL support
 The subscriber’s language can be determined, and information
messages can be made in their native language
 Integration with various billing systems

11. RoamingAutoCallback
Auto callback platform for subscribers in roaming
Gleb Maginskiy
glemag@svyazcom.ru
tel/fax: +7 (391) 227-74-03
www.svyazcom.ru