Take your enterprise to the cloud with elastic SIP trunking services that integrate everywhere
Easily navigate your digital transformation with Bandwidth’s worldwide coverage, flexible usage-based pricing, and intuitive software tools.
Bring an enterprise-grade SIP trunking provider to your organization with the reliable, software-driven voice calling you need:
SIP stands for Session Initiation Protocol and is a protocol (i.e. language) that communications applications use to talk to one another over an IP network.
SIP is used to create, manage, and terminate calls (or sessions) in an IP-based network, SIP is the instruction set that tells an application how to process a phone call.
SIP Trunking is a way to make voice calls over the internet. This communication method allows for Voice Over Internet Protocol (VoIP) calls to be made, for messages (SMS/MMS) to be sent, 999 emergency calls to be made, and other SIP-based real-time communications.
The primary benefit of SIP trunks over PRIs is cost savings as this method is far more scalable, and generally comes with less fixed overhead costs.
SIP makes converged networks possible because it is an application, not a service. In the same way that copper lines transmit signals rather than create them, SIP allows any endpoint to communicate with another, as long as the two endpoints agree to use SIP. That means that a single-location company can converge its networks, roles, and equipment into one system that meets all of its communication needs. Convergence offers concrete benefits, in that:
Speed, agility, and leanness are guiding principles for companies that need to stay competitive today. And in order to support those principles,
businesses need technology that supports them as well. Compare SIP to traditional phone services and the advantages are clear.
SIP delivers significant savings. Traditional analog circuits are costly because they have to be designed, configured, maintained, and upgraded. SIP trunking provides the same call quality as traditional line, but since it runs over the Internet, it doesn’t require the same level of design and configuration. Plus, the maintenance and upgrades to the network would be necessary whether SIP trunking was being run through them or not.
The infrastructure costs for SIP trunking are also lower because SIP eliminates the need for primary rate interfaces (PRIs), which require enterprises to buy lines in bundles of 23. PRI customers who need 10 lines have to buy a bundle of 23, leaving 13 unused. SIP, however, can be purchased in whatever number of units a business requires.
Long distance, local inbound, and termination services can be included, providing another opportunity to save costs. Plus, SIP trunking delivers cost savings as great as 60% over traditional methods.
A business should look to a SIP trunking provider when they decide that their needs are being met with a premise based PBX, but want the benefit of virtual circuits and more flexible pricing options.This system is often referred to as an IP-PBX (Internet Protocol private branch exchange). Coupled with SIP trunks, an IP-PBX serves up similar features to hosted solutions. SIP trunks typically save a business customer money over a hosted solution in that a SIP trunk can serve the needs of three to four employees, while a hosted seat is needed for each employee.
Today many companies use SIP trunking to power the calling within their UCaaS and CCaaS platforms, but generally SIP Trunks can work with any SIP-ready hosted PBX system. SIP Trunks can also be made to work with a traditional analog or key phone system with an IAD (Integrated Access Device).
With all the advantages that SIP trunking offers, why do any companies still use traditional services? Simple! Traditional telecom has been in existence for over 100 years. Over its lifetime, copper has, of course, been widely adopted, and it’s the telephone technology that most of us grew up using. The short answer is: it was the best option that businesses had until recently. SIP trunking is only about 10 years old. That means it was purpose-built to work in today’s business environment. Since the advent of SIP trunking as a business tool, nearly 70% of decision-makers have adopted SIP, and of those adopters, 96% report satisfaction with call quality. A protocol can only achieve widespread adoption when it’s based on consistent standards. The guidelines for how a SIP trunk should work and interoperate with a phone system are defined and guided by the SIP Forum, an organisation of telecom experts who work towards the continual improvement of SIP standards.
Network ownership does matter, particularly for larger organisations with higher call volumes. Large enterprises tend to see a greater call volume as they have more employees and customers that rely on underlying SIP services to do business. As the sheer volume of communications that are critical for doing business increase, so does the risk and potential cost assumed by the enterprise in the event of an outage. Therefore, it’s critical to pick a provider that is an actual carrier with ownership of the underlying network. This will allow the enterprise to maintain greater control and visibility over their services, and enables you to go directly to the source for resolution if there are any issues or disruptions to the service.
While most SIP providers are resellers that rely on several carriers, Bandwidth gives you direct-to-carrier access, meaning we cut out the middleman, giving you better support with deeper insights and faster results.
Industry leaders, such as Google and Microsoft, rely on Bandwidth because of our record of stability, innovation, reliability, and growth. Bandwidth is able to meet these challenges because we are a carrier-grade global network reaching 60+ countries, with billions of minutes traversing it every month.