Posts tagged ‘IMS’

Vendor Spotlight – Virtualized IMS for Faster IP Service Deployments

Guest Post written by Interop Technologies

Operators worldwide have either recently exhausted their LTE network CAPEX or are squarely at the center of it. VoLTE announcements are only accelerating the momentum while providing proof that the tide of advanced IP service adoption is changing. The thing all operators have in common, however, is that they face market pressures for VoWiFiVoLTERCS, and other advanced IP services—many of which have IMS requirements for basic functionality or optimal performance. Thus, when additional changes to the network core are needed to facilitate IP service launch, the cost and complexity of the endeavour through traditional deployment methods can be too lengthy for most operators to meet current demand. For these reasons, virtualisation must be explored.

A virtualised IMS core allows for the quick deployment of cloud-based advanced IP voice and messaging services. WiFi calling is the most crucial service requiring immediate deployment to solve operational issues like in-building coverage and consumer demand. Additionally, the seamless layering of future services that grow with and meet demand is an advantageous way for operators to stay competitive in their market. 


Learn more about Interop Technologies and their CorePlusX℠ offering in person at next week’s LTE Asia conference, @ Booth #37.

Driving VoLTE innovation in Middle East and North Africa – Interview with Aslam Hasan, VoLTE/HD Consulting Program Manager, AT&T Mobility

Aslam Hasan, VoLTE/HD Consulting Program Manager, AT&T Mobility

Aslam Hasan, VoLTE/HD Consulting Program Manager, AT&T Mobility

What is the current status of VoLTE deployments globally and how do operators see this long awaited service impacting the market? To find out I spoke to LTE MENA speaker and VoLTE/HD Consulting Program Manager for AT&T Mobility, Aslam Hasan.

“VoLTE deployments are now picking up around the globe” he said “and South East Asia is leading the way. Countries like Korea and Japan have had VoLTE deployed for almost a year; whereas in North America all the major carriers introduced the service in summer last year. Carriers in Latin and South America are still yet to announce the introduction of the service. However, with the launch of iPhone 6 and more VoLTE devices we will be expecting more deployments this year and beyond in almost all regions.”

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Why do you need a Diameter Routing Agent in a VoLTE deployment? (Part II)

This is Part II of Peter Nas’ Blog Entry: Other DRA added-value in VoLTE

There’s additional value to the fundamental session binding functionality of a DRA. A DRA can enable optimal call management ensuring higher quality-of-service VoLTE calls. For instance, think of all the different vendors’ equipment that is needed to exchange Diameter Gx and Rx signaling. One example is when the LTE PGW has a different Gx implementation than the PCRF. In turn that PCRF can have a different Diameter Rx implementation than the IMS’s P-CSCF node. Typically inside an operator’s network, there will be various vendors for LTE, PCRF and IMS core network elements. And this is the norm in roaming use cases where the visited LTE network is out of control (meaning a different vendor) than the home IMS network, where the P-CSCF (and other elements) will be involved.

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SKT in good voice as it shows operators the way to go

SKtAt the second day of yesterday’s LTE Voice conference, which took place in London, the presentation by Changsoon Choi of SK Telecom attracted a positive responses from the audience, and really brought home how ahead of the game the South Koreans are in LTE and with particular relevance to the conference, in terms of VoLTE.

Choi started with a simple list of SKT’s achievements in LTE so far. As of 2012 it had 99 per cent population coverage based on a dual layer 850MHz and 1800MHz multi-band network and currently has 89 cities running dual-carrier LTE Advanced, all of which means it’s no surprise is enjoys 48 per cent market share for LTE in the country.

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Interview: Head of IP management, Deutsche Telekom: “I hope the conference will reinforce my belief that VoLTE is happening.”

Michele Zarri, head of international standardisation and IP management, Deutsche Telekom, UK

Michele Zarri, head of international standardisation and IP management, Deutsche Telekom, UK

Michele Zarri, head of international standardisation and IP management, Deutsche Telekom, UK is speaking on Day One of inaugural LTE Voice Summit, taking place on October 1st-2nd at the Hilton Paddington, London. Ahead of the show we speak we get an update on Deutsche Telekom’s progress on VoLTE.

When we spoke in May you said that consumers will use VoLTE as they prefer telco quality voice services? With OTT voice set to grow massively over the next 12 months will consumers really care about VoLTE?

I respectfully disagree with the notion that OTT voice is set for a major growth. Though LTE will greatly improve bandwidth and latency, current HSPA and WLAN access is perfectly capable of supporting OTT voice. As smartphone penetration for which many OTT voice clients exist is already significant, there therefore seems to be not much reason why customers should suddenly change their habits. OTT will grow because the general trend of voice traffic is growing, but I still see OTT voice as a different product than VoLTE and catering for different use cases.

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VoLTE – Why it’s Imperative for LTE

Kaushal Sarasia, Assistant Manager, Marketing for Aricent.

Kaushal Sarasia, Wireless marketing for Aricent.

This post is by Kaushal Sarasia, Assistant Manager, Marketing for Aricent.

While LTE has established itself as the technology of choice to cater to the ever increasing demand for bandwidth one of the key challenges it faces is voice.

Given that LTE is an all IP network, the challenge is to provide seamless continuity for voice and video calls while using packets. The complexity means that operators are choosing to provide voice services via circuit switching by falling back to their legacy networks. This method of Circuit Switch Fall Back (CSFB) however, is rapidly falling out of favour as operators now want to leverage the full benefit of LTE by providing high definition voice/video services over LTE.

VoLTE not only helps operators reduce cost by eliminating the need to maintain legacy networks but also enhances the customer experience by providing distinct advantages such as high definition voice quality, simultaneous voice and data usability for rich service experience and seamless connectivity. The highly portable and scalable core network of LTE is being extensively leveraged by governments and other agencies for deployments in niche areas such as public safety for disaster management; here VoLTE becomes absolutely crucial for enabling vital voice communication during life critical operations. Moreover, VoLTE can help define a single wireless core network for both data and voice thus allowing multimedia communication involving voice, video and data at the same time. This can be leveraged to provide exceptional customer experience and to share critical information during disaster management.

Implementation of VoLTE is a complex undertaking that requires leveraging the IMS network and implementing specific QoS to enable seamless carrying of data and high definition audio/video quality. Its introduction impacts network elements across the spectrum including User Equipment (UE) (IMS Client), RAN (eNodeB), Core (EPC) and IMS Servers. The standards for VoLTE are still evolving and coupled with the complexity of implementing it means that it provides a huge opportunity for equipment manufacturers to introduce differentiation in their VoLTE solution.

An optimal VoLTE solution delivers an enhanced customer experience by providing many distinct benefits such as seamless HD voice/video quality, while enabling operators to reduce infrastructure cost and complexity. It also enables LTE equipment manufacturers to target this highly lucrative market by offering highly differentiated products, thus providing multiple benefits to every stakeholder in the LTE space. VoLTE has thus become an imperative for the success of LTE.

Aricent will be exhibiting at the upcoming LTE Asia conference, taking place on the 18th-19th September 2013 at the Suntec, Singapore. Click here to download a brochure for the event.

The inaugural LTE Voice Summit, dedicated to telecoms voice issues, is taking place on October 1st-2nd at the Hilton Paddington, London. Click here NOW to download a flyer.

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