The path to replacing MPLS with broadband

Sustaining High Voice Quality Over Broadband

The path to replacing MPLS with broadband

 

The path to replacing MPLS with broadband

Hosted enterprise communication offers a good solution for enterprises looking to move their communication to the cloud and by doing so, reduce their CAPEX investment as well as benefit from a cloud managed solution that is regularly updated for supporting new technologies and features.

These benefits typically come with a caveat, however, a requirement to connect through MPLS to the communications service provider in order to reduce network impairments issues that impact voice quality.

MPLS cost TeleGeography

Source: TeleGeography

 

MPLS comes with a high price tag. The chart above shows typical costs of MPLS in key countries in comparison to broadband. For example, in the US, monthly costs for 10 Mbps of MPLA would be approximately $1,250 while broadband would be slightly over $100.

This represents a significant difference that calls for realizing the cost reduction opportunity. However, the risk of not being able to ensure high voice quality keeps many communications service providers away from recommending this option to their enterprise customers.

Voice QoS is a combination of codecs and other algorithms

Voice quality is determined by network characteristics such as delay, packet loss and jitter combined with the tools used to mitigate network impairments once they happen.

Many of the communications services are using technologies (phones and network servers) that are built for LAN environments or dedicated networks, are not built for the open Internet.

IP-Phones and applications are using codecs such as G.711 or G.729. These codecs are not built for the open Internet both from the resilience and voice quality perspectives.

Voice algorithms such as Jitter buffer need to be tuned for the network and additional algorithms such as Forward Error Correction (FEQ) and packet loss concealment should be implemented.

The end result is that many deployments today are not built for working over broadband and therefore the common practice is to default to MPLS, thus increasing OPEX and delaying customer acquisition (as setting up MPLS may take a few months).

Perfecting voice over unmanaged networks

Yet communications service providers can allow their enterprise customers to benefit from lower cost broadband without replacing their network elements or customer’s phones.

To realize this, however, a few things are required:

  • Real-time monitoring of the voice running over the network
  • Transcoding to codecs built for unmanaged networks such as OPUS. OPUS has resiliency built into it by design and supports a wide bitrate range going up to ultra-wideband.
  • Implementation and tuning of algorithms such as adaptive jitter buffer, FEC and packet loss concealment
  • Smart routing and balancing of traffic between several broadband links if more than one link is available

AudioCodes’ VoIPerfect offers all these capabilities and allows communications service providers a route for easy adoption of this technology by deploying SW or HW elements at their access and customer premises while not replacing the existing deployed elements.

To learn more about the VoIPerfect and experience a real demo click here (http://online.audiocodes.com/voiperfect-for-ucaas-providers).

Managing Heterogeneous VoIP Networks

The Nightmare of Managing Heterogeneous VoIP Networks in Medium to Large Enterprises

There is an Answer

Managing Heterogeneous VoIP Networks

Managing heterogeneous VoIP networks in medium to large enterprises can be a nightmare. Due to the large number of vendors participating in providing the solution, there can be problems at every stage of the implementation and maintenance issues can arise in a variety of aspects including:

  • Network design and configuration
  • Device discovery
  • Distributed routing & policy enforcement
  • Distributed PSTN breakouts
  • Multiple VoIP network elements configuration: SBC and MGW
  • Multiple dial plans: SfB, IP-PBX, SBC and MGW
  • SIP interworking between IP-PBXs A large number of end user policies

Distributed networks present numerous challenges and when it comes to heterogeneous networks where the devices and applications are provided by different vendors, the situation is even worse. Unified Communication systems (e.g. Skype for Business) and the various components in the network such as IP-PBX, SBC and MGW, each have their own static routing, manipulation and dial plan tables. In actuality, we are talking about a distributed system whose elements don’t communicate with each other.  As for troubleshooting, there is no single throat-to-choke and each vendor puts the blame on the other.

AudioCodes’ new White Paper entitled, “Call Routing and Policy Management in Heterogeneous VoIP Networks” presents the challenges of heterogeneous VoIP networks and related applications currently existing in the market. The paper describes a new solution – the “Centralized Dynamic Routing and Policy Manager” – a holistic dynamic routing manager whose design is based on Software-defined Networking principles.

The Centralized Dynamic Routing and Policy Manager decouples the device layer from the network routing and policy layer, automatically creates complex VoIP networks, and simplifies routing rules, monitoring and management configuration. The Centralized Dynamic Routing and Policy Manager does not enforce modifying the network to a star formation and rather manages the network as is.

For more information, click here to download the “Call Routing and Policy Management in Heterogeneous VoIP Networks” White Paper.

Management System

Amazing Savings with a Managed IP Phone System

Management System

In a recent No Jitter blog entitled Managing IP Phones Goes Way Beyond Provisioning, I pointed out how much more powerful a managed IP Phone system is than simple provisioning and that this power and flexibility can bring considerable cost savings to an IT department. This wasn’t just marketing talk. In this blog, I want to tangibly demonstrate how this savings is achieved and what kind of numbers we are talking about.

To do this, I want to take a real-world example of a large enterprise that has deployed 20,000 IP phones amongst its employees. There are several levels to the cost savings, but it starts with the basic element of a managed IP phone solution saving countless help desk hours by providing IT the ability to remotely detect, correct and configure IP phones rather than the need to speak with the user and figure out the problem. If the average time per help desk call to figure out the problem without the managed system is conservatively 15 minutes, with the managed system, that time is cut down to just several minutes – we’ll go with 3. If the cost of a help desk worker is $50 an hour, then the savings would be reflected in the amount of help desk calls multiplied by the savings in time between 3 and 15 minutes.

Below, we look at a three-year model in which the amount of help desk calls will no doubt decrease over time as the system is used. Again, with a conservative estimate, if in the first year we can expect at least 20% of the 20,000 IP Phone users to have a single help desk call, going down to 10% in year two and 5% in year three, the savings can reach $70,000 over the three-year period. In reality, the amount of help desk calls could be as much as double ($140,000), the savings increasing accordingly.

IP Phone TCO

But that’s only part of the savings story. The IP Phone Manager allows for zero-touch customized configuration for multisite deployments. Such customization without a central management tool would require a pre-staging service from an integrator, estimated to be around $5-$10 per phone. Thus in the case of a 20,000 phone rollout, that could mean an additional $100-200K in savings.

And finally, AudioCodes IP Phones support SILK, the native Skype for Business vocoder. This vocoder delivers the best end-to-end voice quality experience available, further reducing the load on the help desk by eliminating call quality complaints which are possible in VoIP networks. But beyond the user experience and business productivity enhancement, the SILK vocoder consumes as much as 50% less bandwidth as compared to other IP Phones vocoders. This directly translates into the ability to save on remote branch MPLS access capacity and costs. In some cases, where dedicated bandwidth is allocated for voice traffic, this can lead to 50% less bandwidth consumption and MPLS costs.

In sum, the ability to manage IP phones with a system such as the AudioCodes IP Phone Manager, can lead to significant savings for a company.

AudioCodes IP Phone Manager Express is a freely downloadable Windows application that enables you to manage up to 500 AudioCodes IP phones efficiently from a single location.

The AudioCodes One Voice Operation Center IP Phone Manager, can support higher capacities.