Tag Archives: communication solution

Introduction to Session Border Controllers

High definition video conferencing is a standard right now. If it will change, it will only change to an ever higher definition such as Ultra HD (involving 4K and 8K). Virtual workplaces, telecommuting and working from home becomes more and more easy and so organisations go expanding, sometimes forgetting about network requirements ending up with new capacity limits or reduced quality of their video communication solution.

A Session Border Controller can help with many problems there might be, but it is not a remedy for every issue ever to occur on your video conferencing network. I wrote this article to give you some more insight into what a Session Border Controller is, what it does and how it can help your corporate communication.

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What is a Session Border Controller?

A Session Border Controller is a network component designed to safely link networks with a different security requirement and setup. They are mostly utilised for VoIP and video conferencing networks to establish secure connection sessions. The Session Border Controller therefore allows control of signaling and transfer of media data in a secure way.

What can I do with a Session Border Controller?

Session management allows service providers to control the session routing, establish interoperability across environments with differentiating standards, enforce bandwidth policies or create an interface to a third party application. To keep it short and simple: A Session Border Controller optimizes solution performance and overall service quality, it allows a rapid service deployment or growth and it protects infrastructure from malicious attacks.

Who develops Session Border Controllers?

Based on Gartner’s Magic Quadrant for Session Border Controllers from October 2012, Acme Packet (recently acquired by Oracle) excels in execution as well as vision scope, making them the leader of the magic quadrant (see graphic). Other competitors are Huawei, Sonus, Genband, Metaswitch Networks, Dialogic, ZTE and Technicolor.

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Magic Quadrant for Session Border Controllers by Gartner Research

Acme Packet is very interesting due to their focus on unified communications networks and even offering solutions especially designed for video conference networks of manufacturers such as Alcatel-Lucent, Avaya / Radvision, Cisco (including former Codian / Tandberg technologies), LifeSize, Polycom and Vidyo. Supporting and enabling interworking these technologies the Acme Packet solution avoids potential for vendor lock-in, protecting the investment made in video conferencing infrastructure and endpoints.

What are the technical functions of a Session Border Controller?

The functional scope of a Session Border Controller can vary, depending on what the individual device is designed to do. However to reflect a maximum of capability information, we would like to list the following functions that can be found in Session Border Controllers:

Connectivity

  • IPv4 / IPv6 interworking
  • SIP manipulation
  • NAT traversal
  • VPN connectivity
  • H.323 / SIP interworking

Quality of Service (QoS)

  • Traffic policies
  • Call admission control
  • ToS / DSCP bit setting
  • Resource allocation
  • Rate limiting

Security

  • Defense against DoS attacks
  • Can prevent toll fraud
  • No topology hiding possible
  • Malformed packet protection
  • Signaling protection via TLS and IPSec
  • Media protection via SRTP

Media processing

  • DTMF delay and interworking
  • Media transcoding
  • Tones and announcements
  • Data and Fax interworking
  • Support for Voice and Video calls

Regulatory

  • Call prioritization (e.g. for VIP usage or emergencies)
  • Auditing functions for internal audit or for law enforcing organisation
  • Business Intelligence, reporting, management information, source for billing information

Summary

Even though not a mandatory part for VoIP or video conferencing networks, Session Border Controllers have a great potential to add value to the communication services of organisations. The relevance increases for service providers companies as the functions described above can significantly increase the quality and performance of a serviced network.

If you have questions, remarks or other types of feedback please drop us a line in the comment section below. Thank you!

VoIP is Perfect for Business Communication

In the past, the way to communicate was through snail mail and landline phone service. This was one of the major obstacles when conducting business. Mail is slow to arrive and phone lines are busy all the time. Suppliers and producers alike have to handle transactions over the phone and voice support alone is not enough to convey enough information. Today, there are VoIP service providers such as RingCentral that could make work easier and more efficient.

VoIP is now being dubbed as the future’s communication super technology and already today a part of  the Unified Communication Strategy of many enterprises. VoIP is the abbreviation of Voice over Internet Protocol. It makes your voice cross boundaries through the Internet. In any type of business, communication is the key to gain success. This of course entails the use of only the best modes of communication. So far, VoIP service is already gradually becoming a leader in this type of industry. It’s because it offers so many services and applications that landline and mobile phone services cannot.

voip-headset-logoVoIP is Easy to Use

If you know how to chat using the ones offered by email service providers, you would not have any problems learning how to use VoIP. Instructions are very easy to follow and even your employees will not have trouble toggling VoIP applications. You can use VoIP using your desktop computer, laptops, smartphone hybrids or have it directly connected to your analogue system. The best way to make use of this of course is from a computer-to-computer basis because calls will not take up any costs. 

VoIP is Very Flexible

Businesses are now making a switch to VoIP because it also offers an intra-office communication solution. Instead of each person or division having their own numbers, the employees are now required to have their very own VoIP account for easier inter-office communication. This is advantageous for the employees because they will not have to transfer desks to give necessary documents when they can just send these with the use of VoIP. It can also be used when sending and receiving messages to other people outside the office. This can also be used for outside communication. In fact, it is currently being used by businesses that have more than one office and can also be used to communicate with other business contacts such as investors, suppliers and clients.

 VoIP Offers More than Just Voice Support

VoIP is not just a service that mimics telephone conversations. It is far more progressive than that. If you have a webcam, you will be able to see the person you are speaking to, facilitating a video conference. You also have the capability to talk to multiple users if you wanted to and make it a multi-site-call. This can be an advantage if you are on vacation but need to be on call for business related activities. For example, you have a file you missed to endorse to a certain employee. VoIP can let you talk to this person and share that file at the same. What is more interesting is that text files are not the only types of documents you can share using VoIP. You can also send rich media files such as videos and audio. You can even attach a voice message using your email!

When you choose VoIP, you improve inter-personnel communication. Since people now are discovering the advantages of using the Internet when placing orders or building business contacts, you too can benefit by making yourself easily reachable with the use of VoIP and other Unified Communication technologies.