UCM
USSD Call Me
UCM service allows subscribers to send USSD request to called parties as SMS or USSD notification by indicating "Please call me" which encourages called party to initiate a call.
UCB
USSD Callback
UCB service allows prepaid subscribers to initiate calls during roaming in networks without CAMEL II support or agreement with HPMN.
ECP
Emergency Call Positioning
Service retrieves the location information of subscriber who calls '112 Emergency Service' regardless of HPMN or VPMN or other operators' subscriber with SIM or without SIM.
ECR
Emergency Call Routing
Service provides the functionality of handling routing of the emergency calls to predefined numbers based on location information and behavior of subscriber.
ACR
Anonymous Call Rejection
ACR service enables the subscriber to reject incoming calls with restricted address presentation (CLIR Supplementary Service) or unknown CLI.
EIR
Equipment Identity Register
EIR enables network operators to control and filter IMEIs (International Mobile Equipment Identity) in their network, to avoid mobile handset smuggling and to decrease stolen handsets in the market.
Service allows subscribers to top-up their credit and inquire the current credit balance information over SMS, IVR and USSD channel. In addition, VPN group members are allowed to retrieve registered information service for group members and forward their calls to another member of their group.
Subscribers with zero balance are offered extra credits (negative balance) of variable amount according to their segment or history. Negative balance fee can be applied during the following credit top-up of the subscriber.
Mobile Office service allows forwarding of calls made towards a corporate number, to other mobile and fixed numbers of the company in accordance with configuration based authorization.
LER
Local Event Rater
LER provides recurring charging capabilities to manage subscription based services such as Mobile TV and RBT. Subscription based Value Added Services require a reliable charging module to capture subscription fee periodically.
PCRF
Policy and Charging Rules Function
PCRF is responsible for identifying and executing the policy rules for the service that a subscriber may intend using. The policy rules can be formulated based on static information, such as the subscription profile or dynamic information like consumption history.
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