Callbox Mobile - Secure Communication Platform

Project Overview

SweetSoft developed Callbox Mobile, a secure communication application platform for L5 Networks, a Brazilian telecommunications company. The solution provides native Android and iOS applications enabling private calls, conference functionality, and video calling capabilities with advanced features including call analytics, recording, voicemail integration, and phone number masking to serve logistics, delivery, and technical support sectors.

Challenges

• Multi-Platform Development: Building native applications for both Android and iOS platforms simultaneously
• Secure Communications: Implementing private, secure calling infrastructure
• Call Analytics: Creating comprehensive tools to track call volumes and duration metrics
• Recording Functionality: Implementing reliable conversation recording with storage management
• Email Integration: Building automated voicemail delivery system with timestamps and audio attachments
• Number Masking: Developing technology to obscure user phone numbers through contract number substitution
• Contact Management: Creating robust blocked and allowed contact lists to prevent unwanted communications
• Business Applications: Designing features applicable across logistics, delivery, and technical support sectors
• HD Quality: Ensuring high-definition voice quality with multiple codec support
• Conferencing: Implementing stable multi-party conference calling functionality

Our Solution

We built comprehensive native mobile applications for Android and iOS with advanced communication features, analytics, and security capabilities tailored for business communication needs.

Key Features

Core Communication:

• Voice Calling: Private voice calls to individual contacts with HD quality
• Video Calling: Secure video calling capabilities
• Conference Calling: Three-member voice conferencing functionality
• Call Recording: Comprehensive conversation recording with storage management
• Call Waiting & Transfer: Professional call management features
• Missed Call Notifications: Automatic notifications for missed calls

Advanced Features:

• Call Analytics: Detailed tracking of call volumes, duration, and patterns
• Call History: Complete call history with analytics visualization through graphs and charts
• Voicemail System: Automated message delivery to user email with timestamps and audio attachments
• Number Masking: Phone number obscuring through contract number substitution
• Contact Management: Blocked and allowed contact lists preventing unwanted communications
• Automated Reporting: Email reports on call types, operators, costs, and missed calls

Industry Applications:

• Logistics: Secure driver-dispatcher communication with number privacy
• Delivery Services: Protected customer-courier calling without exposing personal numbers
• Technical Support: Call recording and analytics for quality assurance and training

Technical Highlights

• Swift for native iOS development ensuring optimal performance
• Java for native Android development
• PortSIP SDK integration for robust VoIP functionality
• Multiple codec support: G.729, G.711, G.722, G.726-32, GSM, iLBC
• HD calling quality with adaptive codec selection
• Secure encryption for voice and video communications
• Real-time analytics processing and visualization
• Cloud-based call recording storage
• Email integration for voicemail delivery
• Push notifications for missed calls and messages
• Efficient battery management for mobile platforms
• Network optimization for various connection qualities
• Database management for call history and contacts

Project Metrics

• Partnership Duration: 2014–2016
• Development Hours: 63,000+
• Platforms: Native Android & iOS
• Services Delivered: Mobile Development, VoIP Integration, Analytics Development, Security Implementation
• Codec Support: G.729, G.711, G.722, G.726-32, GSM, iLBC
• Target Industries: Logistics, delivery services, technical support

Results

• Comprehensive Platform: Successfully delivered full-featured mobile communication applications for Android and iOS
• HD Quality: High-definition calling with multiple codec support ensuring clear communications
• Advanced Analytics: Statistical analysis through graphs and charts providing business insights
• Number Privacy: Phone number masking protecting user privacy in business communications
• Automated Reporting: Email reports delivering insights on call types, operators, costs, and missed calls
• Business Versatility: Features supporting logistics, delivery, and technical support sectors
• Secure Recording: Reliable conversation recording for quality assurance and compliance
• Professional Features: Call transfer, waiting, and conferencing matching enterprise standards
• Email Integration: Seamless voicemail-to-email delivery with audio attachments

Client Impact

Callbox Mobile has transformed how L5 Networks serves communication-heavy businesses in Brazil. The application’s phone number masking feature has proven particularly valuable for logistics and delivery companies, enabling driver-customer communication while protecting personal phone numbers. The comprehensive call analytics and automated reporting have provided businesses with actionable insights into communication patterns, operator performance, and costs. The conversation recording functionality has enabled quality assurance and training programs for technical support teams, while the email-integrated voicemail system ensures no messages are missed. The HD quality calling with multiple codec support has delivered clear, reliable communications even in challenging network conditions. The 63,000+ hours invested in developing native Android and iOS applications have resulted in a robust, professional communication platform that has helped L5 Networks compete in the Brazilian telecommunications market by offering sophisticated features typically found only in enterprise solutions.