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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What is a Session Border Controller?

session border controllerA Session Border Controller (SBC) is a device or software that initiates, conducts, and terminates VoIP phone calls.

SBCs can provide routing, security, interoperability, and more.

However, Sessions Border Controllers are not the only option and we find that most of our partners actually need a SIP Proxy. Read more about the difference between an SBC and a SIP Proxy here.

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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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