What is the Difference Between a Session Border Controller and a SIP Proxy?

session border controllerWe often find that our customers have a misconception of Session Border Controllers (SBC). Customers that request a SBC often times need a SIP Proxy rather than a true Session Border Controller.

In general, people think of SBCs as a proxy that can be used for routing, security, and
other types of network administration. Customers seeking some sort of routing
administration – Least Cost Routing, for example – will request an SBC, thinking that is
the solution to their need.

However, an SBC is actually a back-to-back user agent SIP application with a wide variety of other uses such as policy-based access control, transcoding, topology concealment, call accounting, QoS, and call quality statistics.

On the other hand, a SIP Proxy is an IP PBX component used for call functions such as routing. A SIP proxy will send SIP requests to the appropriate destination and return a response. SIP Proxies may also be used for registration, authorization, security, network control, and other call functions.

Download our SIP Proxy PDF to learn more. Or For a more detailed and technical explanation, visit Likewise.am.

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VoIP vs IP PBX

voipVoIP and IP PBX are terms that we use all the time, but despite similarities, they are not interchangeable. VoIP has evolved to be a very broad term covering a whole range of technologies, while IP PBX is more specific.

VoIP – Voice over Internet Protocol – describes any telephony system that uses Internet rather than PSTN. The term is used for many types of modern telephony that have replaced legacy systems.

IP PBX – Internet Protocol Private Branch Exchange – is a specific type of telephony system that switches calls between an internal data network and external networks.

IP PBX is a type of VoIP system.

To learn more, visit our products page or contact us today.

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What is a SIP Proxy?

sip proxyA SIP Proxy is, in the simplest terms, an intermediary between two SIP devices. Also called a SIP server, a SIP proxy routes calls on a SIP network and is responsible for tasks such as registration, authorization, and other call functions and features.

A key part of any IP PBX, the SIP Proxy makes calls possible for users. Not to be confused with a SBC, SIP Proxies are unique and probably all you need.

Bicom Systems offers a SIP Proxy product, learn more here.

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On-Premise vs. Cloud IP PBX Systems

Last month we learned what exactly “PBX System” means and some of the different deployment options. The two most common options – and hardest to choose between – are on-premise IP PBX and hosted or cloud IP PBX.

cloud ip pbxOn-premise solutions are owned and managed by the user. The physical IP PBX is stored on-site and all of the technology is set-up and maintained in-house.

Hosted or cloud solutions are rented out by a service provider for a monthly fee that covers service, maintenance, and upgrades. The user needs only IP Phones that connect to the cloud PBX system via Internet.

Both are good options depending on the size and type of your business.

Let’s look at the benefits of each system:

On-Premise IP PBX System

  • No monthly fee
  • More control over the solution
  • Long-term investment
  • No reliance on a service provider
  • Can integrate with other solutions
  • May have more features

Hosted or Cloud IP PBX System

  • Low or no up-front costs
  • No additional maintenance or upgrade costs
  • More flexible and scalable
  • No need for IT expertise or personnel
  • Less employee training needed
  • Advances in technology will come in automatic upgrades

Clearly both systems have benefits and drawbacks. In general, hosted deployments are better for SMBs, organizations limited by budget, or companies expecting to grow in the future. On-premise systems make sense for very large companies that are prepared to own and support their own PBX.

PBXware is an example of a hosted IP PBX solution. Learn more on our website.

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What is a PBX System?

PBX System (Private Branch Exchange System) is a telephony solution that connects internal users to one another and to an outside PSTN telephone line. PBXs are used within organizations or enterprises to simplify communications and lessen costs.

pbx

As with all technology, PBX systems have evolved with new trends. IP PBX uses Internet Protocol or VoIP technology to make PBX systems more feature-rich, scalable, and affordable.

PBX systems are available in two different delivery formats: on-premise or hosted/cloud. This gives us several combination options:

  • On-Premise PBX
  • Hosted PBX
  • On-Premise IP PBX
  • Hosted IP PBX
  • Hybrid PBX
  • Hybrid IP PBX

We will explore the differences between some of these PBX solutions in our next post: On-Premise vs Cloud IP PBX Systems.

In the meantime, visit our website to learn about a real IP PBX System or read some of our related posts: