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Your Location : Home > Voice over Packet > Stacks > H.323 Stack


H.323 Overview

H.323 is the ITU-T protocol for allowing multimedia communication over Packet based systems. It enables voice, video conferencing and data transmission. The H.323 Stack and other Voice over Packet (VoP) software solutions from Aricent provide a complete set of building blocks for quickly developing Next Generation solutions. The solutions meet the carrier class requirements of redundancy, scalability and reliability.

H.323 Network
H.323 Network

H.323 is central to the VoP solutions and may be integrated into products such as Softswitches, Call Agents, Gatekeepers, Central Office Switches, Gateways (Trunking, Residential and Access), Network Access Servers, Cable Modems, PBXs, IP Phones, Soft Phones and IADs to develop a convergent voice and data solution.


H.323 Network

Aricent’ H.323 Stack: Applications

The H.323 stack can be used for building products such as:

  • H.323 Gatekeeper
  • Multimedia Gateway
  • Enterprise Packet enabled PBX solution
  • Carrier grade Softswitches, Call Agents etc.
  • H.323 Multi-point Conference Unit
  • H.323 Test tools and analyzers
  • Softphones and IP Phones
  • Residential CPE devices

Interoperability

  • Backward compatible with H.323 Ver 1 and Ver 2
  • Conforms to IMTC VoIP Forum IA 1.0
  • Interoperates with
    • Microsoft’s NetMeeting
    • Vocaltec IP terminal application
    • Cisco’s AS5300 VoP Server
    • RadCom Bulk Call Generator
    • Other leading industry implementations

Aricent’ H.323 Stack: Components

  • H.225 Call Signaling
    • Conforms to version 3
    • Supports Registration, Admission and Status (RAS)
    • Based on Q.931
    • CLIP/CLIR support
    • Enables maintainance and re-use of connections
    • Provides alternate GK support
  • H.245 Control Protocol
    • Conforms to version 7
    • Provides H.245 Tunneling
    • Enables switching to a separate H.245 connection
    • Supports Fast-Start
    • Overlap Sending
  • H.235 Security Framework
    • Conforms to version 2
    • Supports Baseline Security Profile (BSP)
    • Provides Backend Server Support (BESS)
    • Enables RADIUS mode
    • Supports Default mode
  • H.450.x Supplementary Services
    • Call Transfer (H.450.2)
    • Call Diversion (H.450.3)
    • Call Hold ( ( ( ( (H.450.4)
    • Call Waiting ( ( ( ( (H.450.6)
    • Message Waiting (H.450.7)
    • Call Intrusion (H.450.11)
  • RTP/RTCP
    • Supports Annex A of H.225.0v3
    • Compliant with RFC 1889A
  • Annexures
    • Conforms to Annex E
    • Supports H.225.0 Annex G

 

Last updated : March 17, 2006

 

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