Subscription Manager

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Subscription Manager is a process of handling and managing the client information according to the required authentication setup.

Convergence Subscription Manager is a product that tracks installed subscriptions on a local system to help manage subscription assignments. It communicates with the backend subscription service (the Customer Portal or an on-premise server such as Subscription Asset Manager) and works with content management tools

On-Premise Subscription Service

After Subscription Manager is installed on a local system, it can track product installation, attached subscriptions, and subscriptions that are still available to be consumed. It also tracks subscription expirations and automatically attaches new subscriptions based on the system hardware and the product being attached. Most systems require simple registration. The default configuration registers the system with the main account to the Customer Portal.

Features & Benefits

  1. Restrict certain subscriptions on CCSM to whitelisted lac/cellid
  2. The Subscriptions can auto-renew but only if subscriber is still within whitelisted lac/cellid
  3. An audited track of all subscriptions and attempts
  4. Role based user authentication and authorization
  5. Ability to manage tag locations to subscriptions
  6. Customization of sms texts and strings.
  7. Check current logs, renewal logs and policy logs

Along with all the latest features, CARE external interfaces provided:

  1. GUI – customer service agents  login via HTTP browser on desktop, tablet or phone; view details and change subscriber information on the fly such as packages, subscriptions and fraud counter reset
  2. SMS & IVR – Customers make changes to their subscriptions via SMS short code request for subscribe, unsubscribe, package balance and subscription balance and customers can dial into an IVR and request changes to their subscriptions.
  3. WEB – customers  use a self-care web portal to make changes to their subscriptions

Active Customers

Afghan Wireless

AWCC NLBS web interface is a custom developed middleware to restrict certain subscriptions on IN to whitelisted lac/cellid, and to enforce a policing mechanism, notification and renewal system.

CARE3 is a unified subscription manager custom developed for Afghan Wireless. Using new technologies such as REST, it provides multiple proxies to different Intelligent Network systems deployed with AWCC.

Unstructured Supplementary Service Data (USSD)

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Convergence USSD Gateway is a bidirectional signaling platform that can route messages between the network and service applications that run on them. Even the most basic mobile phone supports USSD messages. This means that subscribers do not need to download an app or login to a website to get interactive content like balance updates, marketing messages, and notifications like low balance alerts.


The advantage of USSD for message delivery and notification is that it is session-based and very efficient. Session-based communications are fast and simple for real-time applications like balance checking, voice chat and advertising. USSD supports process supplementary service (PSSR) and unstructured supplementary service notify (USSN) requests and messages, real-time services like balance checking and voice chat work even when roaming.

USSD has a huge advantage in usage when subscribers are roaming. All USSD messages are directed to the subscriberʼs home network and can be directed to a visiting network enabling a virtual home environment (VHE), which reduces operator costs and greatly improves user experience. Modern 4G/LTE networks support voice chat applications using SIP, USSD-based voice chat application scan work seamlessly and well across older GPRS, 2G and 3G networks, providing the widest possible compatibility footprint for services important to the subscriber.

The Convergence USSD Gateway is built on a fully Open Source server written in Java and strictly adheres to the standards and specifications defined by the International Telecommunications Union (ITU). With full support for virtual machine (VM) and network functions virtualization (NFV) architectures, the Convergence USSD Gateway is very easy to install and deploy in different environments, allowing you start providing interactive messaging and content delivery services with a minimum of support and training.

The Convergence USSD Gateway utilizes Convergence Telecom Core, a modern extensible middleware platform. It provides easy integration with any third party communication protocol or system using industry-standard telecom interfaces including SS7 MAP, TCAP, INAP, or ISUP. USSD Gateway also supports Internet-based communication interfaces and protocols including SIP and HTTP.

The Convergence USSD Gateway provides a scriptable Command Line Interface (CLI) tool allowing you to completely configure the Gateway at run-time and manage it using simple commands. In addition, a Graphical User Interface (GUI) tool is provided to allow you to configure, monitor and manage the Gateway through a convenient user-friendly interface.

USSD Architecture

Features & Benefits

  1. Multi tenant USSD Gateway enables operators to provide native real-time services and interactive content delivery applications to mobile subscribers with both network push and menu-based interaction across multiple branded services.
  2. Carrier-grade scalability and reliability with load balancing and clustering support for automated failover delivers an excellent user experience for mobile subscribers.
  3. Multilingual support for both UCS2 and GSM 7-bit format enables world-wide support for rich content and notifications
  4. SIGTRAN (M3UA), HTTP and SIP interface support provides industry-standard network integration into IMS and LTE networks.
  5. On premise and cloud deployment options provide outstanding flexibility for service provider and enterprise applications.
  6. Flexible Operations and Monitoring support using industry standard protocols including Java JMX and scriptable command line interfaces with full CDR, logging and auditing reporting capabilities.

Active Customers

Afghan Wireless

Convergence developed a USSD Gateway for Afghan Wireless short codes. Afghan Wireless customers can send and receive messages about their web and sms subscriptions.

Digital Bridge

Convergence  developed a centralized Gateway Digital Bridge for their commercial service. The system connects over IPSEC VPN from DBL datacenter in Karachi to four MNOs in Pakistan. USSD solution brings calls from all 4 MNO in Pakistan to Digital Bridge central data center in Karachi for onward processing to payment Gateways.


Posted Posted in Technology

Scalable & Reliable SMS Center

cSMSC is an Open Source SMSC built on latest and flexible middleware platform, rerouting SMS messages and regulating in an efficient manner. cSMSC can be modified to the needs of telecom service providers of different sizes all over the world.

Developed and designed to provide basic SMS features and other value added services. With an intuitive, User-friendly web-based interface, our SMS gateway is capable of delivering messages securely, reliably and instantly. It handles SMS operations, such as routing, forwarding and storing incoming text messages on their way to desired endpoints exceptionally well.

cSMSC gives the client complete freedom the use and customize the code exactly tailored for your needs. cSMSC is a Java based SMSC which gives you the freedom to avoid costly vendor lock-in.


*Integrated architecture provides limitless scalability to meet volume demands in a small imprint

*Simultaneous support for legacy and IP technologies allows for all-in-one set-up

*Intelligent Route Caching reduces HLR load and expenses by up to 50%

* saving on operator costs associated with deployment, power, personnel, and management.

cSMSC Core Features

*Broadcasting campaigns and Group messaging between subscribers

*Store and Forward: Usual interior storing of SMS messages until delivery possible

*First Delivery Attempt:  Instant distribution of messages without relying on the SMSC’s in-built Store and Forward technology and ability. Considerably surges the effectiveness of message traffic within the network and cuts traffic load on the SMSC

*Flow Control: Flexible Routing, Message Prioritization, Retry, Filtering etc

*High Availability: Database clustering, SS7 Dual Plane Redundancy 1 + 1 Worker-Standby model on cSMSC Gateway

*Billing: Detailed CDRs produced in flexible format by exporting from SQL database

cSMSC Core Services

*Mo (Mobile originated) module that handles mobile originated SMS

*Mt (Mobile terminated) module that delivers SMS to mobile

*Rx SMPP module that listens for incoming SMS from ESME and routes to Mt module

*Tx SMPP module that listens for SMS from Mo module and delivers to ESME over SMPP



cSMSC is being used by operators in many countries, processing millions of SMS’s daily. With speeds up to 1000 SMS/sec and adaptable to the needs of telecom service providers, big and small in various locations around the globe and hence resulting in the reduction of CAPEX and OPEX costs.


Several cSMSC nodes can be organized in a group across different diverse data centers to expand output and ensure redundancy, high availability and fault tolerance.


cSMSC supports legacy E1/T1 links via Sangoma SS7 cards plus connectivity to MSC/HLR via SIGTRAN links (M3UA).


In-line with the current trend, cSMSC is Cloud-ready as more and more technologies are adopting Cloud-Computing. cSMSC can be installed on dedicated hardware, private cloud setup or public IaaS such as AWS.


cSMSC is based on modern JSLEE platform, providing provides immediate usability and integration with other communication protocols such as SIP, Diameter, HTTP, XCAP, XMPP, MGCP and many others in addition to the base SMPP protocol for connectivity to ESMEs.


cSMSC jSS7 Stack comes with an efficient Command Line Interface tool and Web Management Interface allowing easy configuration and management of cSMSC. A Web based campaign tool is also included for defining new campaigns and managing the existing ones. The jSS7 stack built in cMSSC provides advanced SCCP routing rules for mapping short codes to MSISDN. Users can send SMS to short-code instead of complete MSISDN.


Rapid tracing, diagnosing and CDR analysis compatible with Wireshark and Ethereal.

Our Satisfied Customers


Fully featured SMSC cluster including four SMSCs over SIGTRAN and two application servers.

40 million sms/day SMSC

Integration with DB for MAP, Kannel ESME, Web2py Bulk application with GUI, SMPP Load-balancer, CDR modules.

DLR (Delivery Reports), Flash SMS, Web GUI etc. The overall Text Rate is 2000 Texts per sec (500 tps per SMSC). Each SMSC is connected with two STPs over SIGTRAN (SS7 over IP)

Afghan Wireless

SMSC cluster (replacing Netfors Solution) included two SMSCs over SIGTRAN and two application servers, Web GUI control interface, clustered with failover MAP nodes and centralized database and persistence SMS handling.

Integrated with DB for MAP, Kannel ESME, Web2py Bulk application with GUI, SMPP Load-balancer, CDR modules .

Custom development on USSD, Application logic and GUI development platform.


Complete Setup of SMShub (ZainZong, ZongZain, ZainMobilink).

10 Million+ SMS capability.

Inbound IVR and Outbound dialer setup on Freeswitch, IVR, trombone callback, GUI, csv parser, Dialout channel management development.

24/7 online support for SMSHUB with dedicated engineers.

Local Loop Setups

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The local loop is the physical link or circuit that connects from the demarcation point of the customer premises to the edge of the common carrier or telecommunications service provider’s network. At the edge of the carrier access network in a traditional public telephone network, the local loop terminates in a circuit switch housed in an incumbent local exchange carrier or telephone exchange.

Convergence has assisted numerous operators in Pakistan in their Local Loop License commencements to offer voice services to their customers by interconnecting to license LDI operators. Convergence helped setting up of public telephone access service which includes, access to emergency service, directory inquiry service,  operator assistance service and local, long distance and international public voice telephone service.L

Local Loop Network

Features & Benefits

  1. Access to emergency service and Access to directory enquiry service
  2. Access to operator assistance service
  3. Access to long distance and international public voice telephone service
  4. Softswitch Deployment
    a. IP level firewall
    b. SIP Server
    c. Authentication / Access Control
    d. Routing
    e. CDR generation
    f. Deployment of CDR system, CDR logging in CSV and DB

5. Deployment of Billing / Rating system  

  1. CDR consumer
  2. Mediation engine
  3. Rating engine

6.  Interconnect with SIP/SS7 LDI operators

  1. SS7 signalling
  2. SIP interconnect
  3. Routing  

7. Legal Intercept

  1. LI Portal
  2. Tagging
  3. Live monitoring

8. Training and TIer-1 support enablement

  1. O&M training
  2. Support and escalation  

9. PTA License verification

  1. Interconnect verification
  2. PTA inspection and verification services