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ViBE – Overview Voice & Data on one link with no effect on voice quality

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ViBE – Overview

Voice & Data on one link with no effect on voice quality

In reality VoIP suffers from one major problem; call quality quickly degrades over low bandwidth links. VoIP calls can also easily over-subscribe a link making it hard to manage your VoIP system. Getting a network with enough bandwidth to cater for all your VoIP calls and other data can be expensive – even more expensive than sticking with your conventional telephone system.

And so using a VoIP system has meant making some kind of compromise, either a compromise in call quality or a compromise on cost.

ViBE removes the bandwidth problems that have always been associated with VoIP, allowing calls to be carried over cost effective ADSL.

ViBE fi nally delivers VoIP without compromise.

How ViBE Works

For any VoIP call to be of a high quality its voice data needs to fl ow continually from point to point. Once the fl ow of voice data is interrupted the call becomes jittery and both participants are likely to fi nd it hard to understand what the other is saying.

ViBE effectively creates a connection over any link (ADSL, 3G, ISDN or satellite) that prioritises voice data packets meaning all the problems with VoIP calls, including jitter and latency, simply stop being a problem. Whatever the data overheads fl owing over a link, voice data always has priority, meaning ViBE calls are always at business class quality, without compromising other data activities.

At present three to four voice calls are comfortably carried over a standard ADSL link. Once the number of calls increases, and data is also sent over the link, then VoIP call quality starts to degrade.

Compressing the voice data would seem like the most obvious way of getting more VoIP calls across the available bandwidth, however such compression is detrimental to call quality. ViBE tackles the problem in a much more effective way. By analysing each voice data packet, stripping away the unnecessary data, ViBE can send an unprecedented number of VoIP calls over a data network.

In principle the idea of VoIP is great, reducing costs and integrating voice with your existing data infrastructure. VoIP allows you to get rid of PSTN lines and PBX systems meaning a big reduction in management and maintenance, which, most importantly cuts your costs. But while VoIP undoubtedly brings many benefi ts, users still have to make a number of compromises to reap these rewards.

Overview

vibe.powernet.co.uk

BY ANALYSING EACH VOICE DATA PACKET, STRIPPING AWAY ALL THE UNNECESSARY DATA, VIBE CAN SEND AN UNPRECEDENTED NUMBER OF VOIP CALLS OVER A DATA NETWORK.

voipexTELECOMS TECH

v x

Voipex Telecoms Ltd12 Midsummer Boulevard, Central Milton Keynes, Buckinghamshire MK9 1EAT: 01908 123456 F: 01908 123456 E: [email protected] W: www.voipex.co.uk

Jonathan NelsonManaging Director

TELECOMS TECH

www.voip-x.co.uk

60simultaneous calls over an average UK

broadband connection

ViBE – Benefi ts

By taking advantage of ViBE’s ability to use ADSL you can avoid IP infrastructure upgrades when making the move to VoIP. ViBE lets you maximise the use of your existing IP infrastructure, with no need for an expensive bandwidth upgrade to accommodate both the voice and data. Without ViBE a dedicated broadband line would be required for every three to four telephone lines you wish to replace.

With ViBE a single dedicated broadband line can be used to replace 60 telephone lines. If the requirement is smaller, the voice can share the same connection as your existing IP data.

Traditionally IP networks are only around 70 per cent effi cient. ViBE not only increases the call capacity of your network, but also increases the effi ciency of the network for existing data to a level in excess of 90 per cent. Ordinarily when using VoIP over a broadband network, even the presence of one or two calls can make data connections very unreliable and ‘choppy’. With ViBE, your data transfer scales perfectly as more calls are made, even when approaching the maximum load.

ViBE uses a customised QoS (Quality of Service), designed specifi cally for voice data. While existing QoS was designed to manage bandwidth as best as possible for multiple applications, it falls short of being able to cope with real-time requirements such as voice. ViBE addresses this issue by using custom methods to guarantee quality of service for real-time applications. Conventional QoS methods of sharing data and voice on the same IP connection results in a loss of call quality when full capacity

is approached. Problems such as pops, crackles, and even gaps in speech can become evident. ViBE guarantees a high quality of all calls regardless of bandwidth.

ViBE reduces the time your voice takes to get to its destination. This eliminates the risk of calls becoming disjointed when both parties speak at the same time - so often a problem when VoIP is used over low-speed networks.

With existing VoIP solutions, should a broadband networking relying on ISDN failover in the event of a problem, any existing calls would likely be dropped. When used in conjunction with our ISDN backup options, ViBE ensures all calls continue (bandwidth allowing), with just a slight pause (approximately one second) during switchover ensuring call continuity during resiliency failover.

ViBE Benefi ts:

• Cut costs by using your existing IP infrastructure

- 60 Calls plus data over a standard ADSL line

• Active - Active link bonding

• Real Time Monitoring

• Call continuity during resiliency fail over

• Cut costs by moving to VoIP and removing the need for:

- PSTN/ISDN Lines - PBX Systems

• Get all the other benefi ts of VoIP

- Flexibility – Location Independence- Integration with desktop (Outlook,

Salesforce – click to call)

Benefi ts

vibe.powernet.co.uk

ViBE’s main benefi t is its ability to use standard ADSL (broadband) connections to carry a high volume of VoIP calls simultaneously - and all at business class quality. The number of calls ViBE can carry at once is dependent on the bandwidth available. But 60 coexistent calls plus other data - like email and web browsing - is possible based on the UK’s average upload speed of 768Kbits per second as at February 2011.

VIBE REDUCES THE TIME WHICH YOUR VOICE TAKES TO GET TO ITS DESTINATION. THIS ELIMINATES THE RISK OF CALLS BECOMING DISJOINTED WHEN BOTH PARTIES SPEAK AT THE SAME TIME.

voipexTELECOMS TECH

v x

Voipex Telecoms Ltd12 Midsummer Boulevard, Central Milton Keynes, Buckinghamshire MK9 1EAT: 01908 123456 F: 01908 123456 E: [email protected] W: www.voipex.co.uk

Jonathan NelsonManaging Director

TELECOMS TECH

www.voip-x.co.uk

ViBE – Technical Information

QoSBetter than

performance

Point to Point Installation Service Provider / Enterprise Installation

Reduced bandwidth requirements - G.729 calls require 42kbps of bandwidth when transmitted over a broadband link due to overheads, whereas the actual voice data only needs 8kbps. ViBE removes many of these overheads and maximises the bandwidth usage.

VPN support - ViBE can be confi gured to create one or more virtual private networks between several sites, ensuring that your voice and data remain secure.

Resiliency control - ViBE can intelligently control resiliency options on the IP network in order to ensure continuity of calls. ViBE will detect a network failure in less than one second and take remedial action.

Multiple IP link bonding - multiple links can be bonded effi ciently, so for example, two standard 512Kb / 256Kb broadband lines could be used to manage 50 simultaneous calls while still carrying other data.

Reduced call jitter - average call jitter across the WAN is reduced to the order of 1ms whether or not data is present on the same link. This compares with more than 100ms of jitter typically found on a standard broadband connection.

Reduced call latency – end-to-end latency is reduced, especially in the presence of high data loads. With standard broadband, end-to-end latency can easily rise above 100ms,

causing conversations to become disjointed. ViBE completely eliminates this problem.

Link quality monitoring - optional reporting generates statistics such as the number of simultaneous calls over time, link latency, uptime, and packet loss, as well as call jitter.

ViBE Installation

Typically ViBE can be deployed in two ways, as a point–to-point confi guration or in a service provider / enterprise confi guration that can handle multiple customer locations.

ViBE Hardware

ViBE enabled devices are available in a variety of confi gurations with capacities from 30 to 3000 simultaneous calls. All ViBE hardware supports:

• Full router functionality such as policy routing, BGP, stateful fi rewall, etc.

• Hardware failover using VRRP

• Can be paired to avoid hardware Single Point of Failure

• Link bonding and failover, call access control, statistics generation, etc.

• Can use N+1 in the core of an enterprise/service provider

• ViBE can also be deployed to third-party devices including: Netgear DG834GT, DGN2000, DGN3500 and Vmware ESXi server

ViBE Features

• Seamlessly convert G.711 to another format and back again

• Overheads per call nominally reduced to less than one byte per packet. G.729 @ 10mS uses 8.23kbit/s of available bandwidth regardless of WAN type (compare to 84.8kbit/s on ADSL)

• Implemented at both ends of link - voice and data controlled in both directions

• Data packets are sliced with zero overhead and don’t need to wait

• Understands about hidden overheads - 100% of link bandwidth can be used

• Works well even on slow links making it possible to use 128k link for voice and data

• Interactive traffi c not choppy

ViBE has built in SNMP and is capable of monitoring:

• Underlying link quality

• Packet loss, latency and jitter

• Faults with the link can be distinguished from customer created ones

• Calls in progress

• General system health

Technical Information

vibe.powernet.co.uk

ADSL / MPLSInternet

voipexTELECOMS TECH

v x

Voipex Telecoms Ltd12 Midsummer Boulevard, Central Milton Keynes, Buckinghamshire MK9 1EAT: 01908 123456 F: 01908 123456 E: [email protected] W: www.voipex.co.uk

Jonathan NelsonManaging Director

TELECOMS TECH

www.voip-x.co.uk