The successful completion of a CS (circuit-switched) fallback voice call with a handset provider as third party has been announced by Huawei.

The demonstration was conducted at the company's test lab in Shanghai, the LTE and EPC Interoperability Testing lab.  The importance of the successful test lies in the fact that it demonstrates to operators that they can use LTE (Long Term Evolution) and EPC (Evolved Packet Core) for pure data service provision whilst still being able to exert leverage to their existing CS networks to deliver voice services.

Xu Weizhong, President of Huawei's Packet Core Product Line, said that the successful completion of the test was further proof if any were needed of Huawei's ongoing concerted efforts to deliver effective end-to-end solutions utilising LTE/EPC so that operators worldwide are able to optimise their 4G mobile networks.  The company, he said, was committed to working alongside partners and peers in order to cultivate a vibrant and innovative telecommunications sector.

As far as the deployment of LTE enhanced networks is concerned, the general consensus is that the preferred solution has already been satisfactorily defined by the 3GPP (3^rd Generation Partnership Project) standard, namely CS Fallback.  This, from the user's point of view, not only supports smooth handoffs but also minimises the delay involved in call establishment.  Existing networks can be made full use of from the operator's perspective, thereby protecting their investments.

CS Fallback services of both SingleCORE-based and SingleEPC types are provided by Huawei, as well as a raft of network services including UMTS wireless, CS core, LTE/EPC and handsets that are CS Fallback capable and have 3^rd party providers.