Leaftel's VoIP System Assessments are based on years of experience gained working with every aspect of VoIP. Leaftel consultants have employed very large systems throughout the world, requiring the full range of telecom technologies and local customization. We specialize in the following areas:
- Networks, peering, and other VoIP technologies
- Designing and developing VoIP Networks with softswitches
- NAT handling, RTP relay, SIP-to-H323 conversion
- VoIP Security
- ENUM (for IP to IP calls)
- Client applications (such as dialers).
Leaftel works with open source communities such as reSIProcate SIP stack, SER, GnuGk. We have also developed many applications using their code.
Click here to read Leaftel Case Studies.
Breakout of VoIP Service Specializations
VoIP Client Side Services
Leaftel has developed VoIP clients that include:
- Signaling: SIP, SIMPLE, H323, Jabber
- Transport: RTP/RTCP, SRTP
- Based on open source or proprietary
- Voice processing development
- Building complete soft phones on PC and mobile platforms
- VoIP Security
VoIP Network (Backend) Services
- Billing
- Selection and configuration of network elements: VoIP Routers (LCR), Registrars, Soft Switch, SBC (Session Border Controllers)
- Assimilation & Development of Class 5 features
- Authentication
- Connection to Portal VoIP: GTalk, Skype, MSN, AOL
- NAT Traversal base on STUN, ICE, TURN
- FW traversal and tunneling
- Media Relaying
- Solving network peering and interconnectivity issues
- RTP relay
- ENUM (for IP to IP calls)
System Integration
- Team Leadership and Management
- Third Party Integrations
- Client/Server Systems
- Software Security
- Real Time Systems
- Databases
- Full Life Cycle Development
- Need Analysis & Problem Resolution
- Network programming
- TCP/IP
Technologies
COM, STL, TCP/IP, SIP, H323, ENUM, RTP, RTCP, SDP, STUN, ATL, STL, MFC, WTL, Radius, Design Patterns, multithreading
Programming Languages
C/C++, SQL, Java, VB, Assembler + MMX, C#, Win32/64, Linux, Assembler MMX to name a few
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