Overview
The VocalTec Essentra IN Platform enables providers to offer two or more lines simultaneously over a single mobile handset. The Smart-IN platform is deployed on existing mobile networks and does not require specific handsets or handset customization and is functional over a regular SIM (subscriber identity module) card. The multiline option allows either prepaid or postpaid billing structures, may be switched on or off, and enjoys either a single or a combined voicemail and additional services per line, according to the user’s preference.
Network & solution architecture
The Smart-IN Platform contains the Multiline Service Control Point (SCP) which enables internal and external communications. It contains the following network components:
- The Network Management System (NMS) – the NMS is used for fault management and graphical user interface (GUI) amongst others.
- The Host Signaling Unit (HSU) – The HSU is the core of the Multiline SCP and communicates with all the other components.
- The Smart Signaling Unit (SSU) – SSU is the signaling gateway between the Multiline SCP and the Signaling System 7 (SS7). SS7 or Common Channel Signaling System 7 (CCS7) is a set of telephony signaling protocols used to set up the vast majority of the world’s PSTN telephone calls. It is a highly centralized protocol, characterized by complex central network architecture. Two SSUs are connected by a signaling link to the SS7 network and by the Transmission Control Protocol or Internet Protocol (TCP/IP) to the HSU.
- Oracle Cluster – An Oracle Cluster is used in the Smart-IN Platform with full redundancy as a subscriber database platform.
The Smart-IN Platform contains the following solution architecture:
- Network Interface Functions (NIF) – The NIF provides and manages the interfaces between the SMART-IN Platform and the networks.
- Service Logic Execution Engine (SLEE) – The SLEE is the core component of the SMART-IN Platform. It executes procedures related to the external network triggers that manipulate and control calls and events.
- System Management Functions (SMF) – The SMF performs multiple activities related to the management of the Multiline SCP including configuration management, fault management and performance management.
- Operator Interface Functions (OIF) – The OIF manages the interface of the operator’s OSS/BSS platforms and provides system configuration, system performance monitoring, system fault monitoring, subscriber provisioning and subscriber charging.
- Subscribers Database Platform (SDP) – The SDP stores information about subscribers, which may either be operator or user-defined.
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