SP: For those readers not yet familiar with Sevis Systems, please provide a high level overview of the company, its origins, current product offering and markets addressed.
Samaniego: Sevis Systems is a leading provider of mobile backhaul and enhanced signaling solutions to mobile and fixed line network operators. Several of the world’s largest operators rely on the Sevis products to increase operational efficiencies and enable new services. Sevis products are sold worldwide via a network of OEM and distribution partners.
Founded in 1999, Sevis is a privately held corporation based in Plano, Texas. Sevis offers excellent, innovative, carrier-grade solutions to satellite and telecom operators worldwide through our global network of distribution partners.
SP: Having successfully expanded from the network core towards 2G/3G backhaul optimization has likely given Sevis an in-depth understanding of both fixed and mobile transport environments. As a result of such expertise, what are the attributes that make Sevis´optimization products unique from a cost-efficiency standpoint?
Samaniego: Sevis Systems has a long and rich history of developing and marketing core telecom solutions, both hardware and software, to tier one telecom operators worldwide. Our core solutions are innovative and patented 99.999% uptime products which are rigorously tested and trusted for active deployment. Developing these types of products has given our engineers significant experience utilizing mature engineering disciplines and processes to field dependable, critical products. Likewise, Sevis’ backhaul optimization products are developed with the same mature disciplines and processes yielding highly dependable and feature rich platforms and applications for backhaul. This results in a lower total cost of ownership (TCO) for telecom operators.
Furthermore, Sevis’ core networking and protocol expertise has been of great benefit to developing innovative deep packet inspection (DPI) capabilities for the backhaul network. Our innovative Intelligent Optimization features are a direct result of this expertise. They yield a strong ROI for telecom operators.
SP: Those providing satellite links to backhaul wireless traffic typically do the exercise of calculating the return on the investment or payback period. What are the typical savings in satellite capacity that service providers can achieve by using Sevis optimizers and the associated payback period?
Samaniego: Sevis’ traditional optimization typically achieves a few percentage points additional savings relative to our competitors, but our intelligent optimization features can increase savings well beyond our competitors. For example, our Backhaul Congestion Control (BBC) feature can increase savings from 40% up to 70% in most cases.
Of course there are many factors that go into calculating return on investment (ROI), but generally speaking Sevis can achieve an ROI of 3 months or less for most telecom operators. Where applicable, our Intelligent Optimization features can improve on that.
SP: Please provide a high level overview of the Sevis platform at both hardware and software levels. Can you please list the set of features comprised in Sevis´ intelligent backhaul optimization product family?
Samaniego: Sevis has two families of hardware, the 6000 series platform and the 7000 series platforms. Both are carrier grade, providing for reliable operation meeting strict uptime requirements. For 2G TDM, the 6000 series hardware is purpose-built specifically for supporting mobile backhaul applications. With field replaceable power supplies, high accuracy clocking options (Stratum 2 internal, GPS option), and instant expansion capability (E1s activated via licensing), the Sevis 6000 series provides significant value to the network operator seeking to reduce bandwidth usage while maintaining high reliability. Higher bandwidth 2G and 3G IP applications are hosted on a 7000 series platform. This platform supports the unique bridging architecture that enables Sevis to implement a broad range of Intelligent Backhaul Optimization (IBO) features.
IBO feature overview based on network type:
Sevis 2G TDM Optimization
• For TDM based services, voice channels are optimized by removing all inefficiencies such as silence and inactive channels.
• Signaling, OA&M and data channels are compressed.
• Overall savings can be up to 50% depending on traffic conditions.
Backhaul Congestion Control
• The patent-pending Backhaul Congestion Control (BCC) feature intelligently monitors network conditions to offer higher optimization and can limit voice codecs to AMR-HR or HR for bandwidth reduction, saving up to 50% per call.
• The technology forces the use of more efficient AMR-HR codec, which reduces the data rate of a typical voice call while preserving and in some cases improving voice quality.
Sevis 2G IP Optimization
• For 2G IP based services, aggregation of UDP traffic is applied using multiple queues, each with independently configured user defined priority and temporal depth (latency).
• Additionally, enhanced compression techniques are used for increased savings.
• Savings of 35% – 50%, depending on traffic, are typical.
Sevis 3G IP Optimization
• For IP based services, such as Iub and S1 interfaces packet aggregation of UDP traffic is applied using multiple queues, each with independently configured user defined priority and temporal depth (latency).
• Additionally, enhanced compression techniques are used for increased savings.
• Further savings in 3G applications can be achieved by enabling the enhanced 3G header compression which operates directly on the Frame Protocol header to reduce data across the WAN.
• Savings of 10% – 30%, depending on traffic, are typical.
Sevis 3G TCP Acceleration
• Reduces satellite bandwidth needs by 20% or more
• Enhances mobile users experience and network performance
• Minimizes effects of latency
• Improves network response and increases reliability
• Supports asymmetric links
Sevis 3G Data Offload and Overflow
Sevis’ IP Optimization solution processes IP traffic using a multi-stage optimization algorithm designed specifically for mobile networks. This algorithm leverages mobile and network transport domain expertise. The stages are defined as:
• Network Domain: Process incoming traffic and apply mobile traffic aware intelligent optimization techniques to ensure the network is using the most efficient voice codecs, reserving the proper number of resources for packet service, and prioritizing access domain mobile traffic. These capabilities are licensed features.
• Application aware: Integration with third party vendors to provide solutions such as remote switching. These capabilities are licensed features.
• Transport: IP traffic is processed at OSI layers three through six. A proprietary mobile network tailored enhanced compression algorithm is applied. This mobile network aware version of header compression treats the forward and backward IP paths independently, supporting multiple IP route QoS network architectures. Packet aggregation of UDP traffic is applied using multiple queues, each with independently configured user defined priority and temporal depth (latency). Packet variation is preserved across WAN interfaces and precisely recreated at the far end node. Finally, independent QoS tags may be applied to outgoing traffic.
• Media: A lossless compression algorithm is applied to all outgoing WAN traffic. The IP optimizer operates in bridged mode eliminating network reconfiguration or changes to network routing. Sevis’ IP optimization platform runs side-by-side with Sevis’ 6000 Series Abis optimization solution. KPIs and network statistics area fully integrated between the systems ensuring a single view into both 2G and 3G networks. Similar CLIs along with an SNMP interface ensure ease of use.
• The Sevis Iuh solution which is based on the Intelligent Backhaul Optimization (IBO) 7000 series platform implements a central side only 3G optimization capability. Release 1 of this solution provides Iuh decoding / encoding with TCP acceleration on the outbound link. Future releases will include a book end solution that offers standard optimization plus provide two way TCP acceleration, caching, congestion control, 3G Data Offload, and 3G Data Overflow.
SP: What are the challenges typically faced when targeting large telecom operators and MNO´s whose primary backhaul technology is terrestrial backhaul?
Samaniego: Sevis’ technology is ideally suited for backhaul over satellite, but as we offer 3G and 4G features our products are providing added value for terrestrial links as well. Data and video services are saturating terrestrial links which then makes Sevis’ suite of Intelligent Optimization features well suited to provide those telecom operators and MNO’s a compelling ROI.
In many cases, terrestrial backhaul is in need of optimization features for quality of service (QoS). TCP Acceleration, caching, dual-route overflow and offload applications are useful for telecom operators and MNO’s to offer their subscribers a better experience and more resilient networks.
SP: With the entire industry now transitioning to High Throughput Satellites (HTS) with inherently lower transport costs, how do you think this shift will affect the business of cellular backhaul and optimization in particular? What new needs could emerge as a result of HTS requiring use of intelligent optimization technology?
Samaniego: As HTS becomes more ubiquitous and bandwidth costs naturally decrease, backhaul over satellite will become preferred over some terrestrial backhaul options, such as microwave. Sevis’ Intelligent Optimization technology is a critical component to compensating for and solving the inherent satellite delay issue. Sevis’ Intelligent Optimization features solve that problem in a number of ways, to include intelligent routing capabilities to selectively route latency-tolerant data over satellite backhaul while the latency-sensitive voice traffic remains over terrestrial backhaul. Additionally, Sevis’ intelligent routing capabilities can be used to route busy-hour and/or peak traffic to a satellite overflow network, thereby providing telecom operators with more resilient service networks. These are just some of the technologies that will need to be implement in order for HTS to be utilized to its full potential. Sevis’ Intelligent Optimization suite of applications are specifically designed to enable telecom operators to gain the most out of this technology.
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