Cisco CloudCenter: Get the Hybrid IT Advantage


Definition - What does G.729 mean?

G.729 is an ITU Telecommunication Standarization Sector standard used for speech compression and decompression. The technology is used in digital transmission systems and for coding analog into digital signals. G.729 is widely used in voice over Internet Protocol applications because of its low bandwidth requirements.

G.729 includes patents by several companies and is licensed by Sipro Lab Telecom. In certain countries, the use of G.729 requires a license or royalty fee.

Techopedia explains G.729

The extensions of the G.729 standard include G.729a and G.729 b.

G.72a is a compatible extension of G.729 that requires less computational power at the expense of slightly lower speech quality. It was initially developed by a consortium of organizations, including France Telecom, Mitsubishi Electric Corporation, Nippon Telegraph and Telephone Corporation (NTT) and Université de Sherbrooke. Its key features include a fixed bit rate and fixed frame size.

G.729b provides silence compression that enables voice activity detection modules, which detect voice activity in signals. It also includes a discontinuous transmission module that decides when to update background noise parameters for lack of speech and use three-byte silence insertion descriptor frames to initiate noise generation. If transmission stops and the link goes quiet due to no speech, the receiving side may assume the transmission has been cut. Analog hiss is simulated digitally by inserting comfort noise during silence to assure the receiver that links are active and operational.

G.729 is also extended to provide support for wideband speech and audio coding.

Share this:

Connect with us

Email Newsletter

Join thousands of others with our weekly newsletter

The 4th Era of IT Infrastructure: Superconverged Systems
The 4th Era of IT Infrastructure: Superconverged Systems:
Learn the benefits and limitations of the 3 generations of IT infrastructure – siloed, converged and hyperconverged – and discover how the 4th...
Approaches and Benefits of Network Virtualization
Approaches and Benefits of Network Virtualization:
Businesses today aspire to achieve a software-defined datacenter (SDDC) to enhance business agility and reduce operational complexity. However, the...
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.