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Effnet releases Effnet ROHC-LLA™ version 1.0
Zero byte compression - A 100% reduction of packet header overhead for VoIP
packets is implemented in the new product release: Effnet ROHC LLA 1.0.
The ROHC Link-Layer assisted profile (ROHC LLA), defined in IETF RFC 3242,
uses functionality of the lower layers to be able to compress headers of RTP
packets to as small as 0 bytes under normal operational conditions. This
profile is suitable to be used on air interfaces based on technologies such
as IS-95 or GSM. The ROHC LLA profile is included in the 3GPP2 standard
IS-835, where the LLA profile is used as service option 61 (SO61).
The ROHC LLA profile is now available as an add-on to the Effnet ROHC™
version 2.1 and later. The Effnet implementation of the LLA profile includes
full adaptation towards 3GPP2 and includes the functionality of the HRU
(Header Reduction Upper) Layer for use together with SO61. The Effnet
implementation contains all the functionality needed to perform HRU
operations in a PDSN or in a mobile terminal. The Effnet ROHC-LLA™
implementation is fully compatible with the other profiles offered by the
Effnet ROHC™ product, and contains all configuration options offered by
the RFC 3242 and SO61 specifications.
For testing, integration and evaluations by Effnet's customers, the LLA
profile can also optionally be delivered with an adaptation of Effnet
HC-Sim™ that makes it possible to simulate a synchronized link where the
LLA profile can be used.
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