How ViBE Works

ViBE analyses traffic at byte level ensuring optimal delivery of data traffic regardless of data packet type or size.

With traditional QoS mechanisms that work at the packet level, larger packets can still interfere with latency-sensitive traffic such as IP-voice, telnet sessions and citrix – whereas with ViBE, the data is analysed and delivered as it is received without queueing. In addition, ViBE also prioritises and optimises IP-voice traffic – voice data packet overheads are reduced to a minimum, allowing up to 5 times the call density to be transported without any compression of the VoIP data or degradation in call quality.

Data Packets Take Priority Without ViBE

Voice Packets Take Priority With ViBE

  • Voice is no longer treated as simply another type of data which happens to have a high priority. Instead, it is treated as a data stream with very specific requirements not only in terms of priority, but also in terms of spacing between packets.
  • Voice and data can readily coexist on a single link. Data transfer rates are not compromised by the fact that voice is present. Classes of data can be given their own share of available bandwidth in a much more granular way than traditional QoS.

How does ViBE increase IP-voice call capacity by up to 500%?

By stripping out unused information within VoIP data packets, ViBE can transport around five times the payload of IP-Voice calls within the same data capacity. (For G.729a encoded IP-voice)

When VoIP traffic is transported over the network, invisible overheads are introduced. The overhead varies depending on the encoding of the VoIP traffic and the type of network it is travelling over – for example this may be Ethernet, ADSL, Satellite or 3G. The table below gives a data use comparison of transporting VoIP across ADSL and Ethernet versus using ViBE.

IP-Voice call bandwidth requirement Based on a G.729a encoded call sampled at 20ms

  ADSL (PPPoA) Ethernet ViBE
1 Call 44 Kb/s 32 kb/s 29.2 kb/s
10x Simultaneous Calls 440 kb/s 320 kb/s 110 kb/s
50x Simultaneous Calls 2200 kb/s 1600 kb/s 427 kb/s

How does ViBE increase quality, resiliency and speed?

ViBE uses a number of methods to enhance the performance of data connections, be they for internet or WAN data. These include:

Rain ModeRAIN Mode - Increases the quality and resiliency of internet and WAN connections.
RAIN mode (i.e. a Redundant Array of Inexpensive Networks) utilises 2 or more data circuits to send duplicate data to the ViBE head end device. Utilising RAIN mode reduces packet loss as the packet will often pass on the duplicate circuit if dropped. RAIN mode also completely eliminates failover delay time as the secondary data circuit is always active with the mirrored data payload in transport.

Bandwidth StackingBandwidth Stacking - Increases the speed and resiliency of internet and WAN connections.
Bandwidth stacking delivers bonding beyond belief and combines multiple data links into one large data pipe. ViBE’s bandwidth stacking differs from traditional link bonding as it doesn’t become less efficient as more circuits are added and it doesn’t suffer from out-of-order packets – the Achilles heel of link bonding. Additionally, bandwidth stacking is often more cost effective than purchasing a larger-capacity data circuit.
ViBE is also able to efficiently bond links of differing type and speed, which allows greater resiliency to be designed into the solution by using different data service types or even a selection of service providers.

Stacked Rain ModeStacked RAIN Mode - Increases the quality, resiliency and speed of internet and WAN connections.
Stacked RAIN mode combines our Bandwidth Stacking and RAIN mode features. It utilises 4 or more data circuits to send duplicate data to the ViBE head end device and to increase the speed of the data connection.

Active Passive ModeActive/Passive Mode - Increases the resiliency of internet and WAN connections.
Active/Passive mode is suitable for low-speed data circuit backup solutions, such as ISDN2 or 3G servicess. ViBE automatically tests the passive (redundant) link for availability and can switch to the redundant link immediately. Active/Passive mode can be combined with any of the above modes to add a final level of failover.

What hardware or software is required for ViBE?

For businesses, a ViBE router can be deployed behind DSL modems or connect directly to Ethernet services. The ViBE router can be configured as the main gateway router or it can sit within an existing infrastructure to provide ViBE-enabled services.

Businesses can connect to ViBE-enabled service providers, who would have a ViBE head-end installed within their infrastructure.

Additionally, for businesses wishing to use ViBE across a multi-site WAN, this can be delivered either via a ViBE-enabled service provider or by deploying a ViBE head-end within the corporate infrastructure.

There are a number of other options available for deploying ViBE, including VMware and ViBE embedded in third party devices.

How does ViBE make my network easier to manage?

ViBE provides real-time monitoring of the underlying link quality and its effect on voice. Packet loss, latency and jitter are also monitored. ViBE’s monitoring is not affected by link loading and any faults with the link can be easily identified. ViBE supports SNMP giving administrators detailed information including calls in progress and general system health.

Deploying ViBE

WebexViBE Case Studies
One to One