What is PRI? More scalability. More simplicity. More flexibility.

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2 Business are wasting an enormous amount of time and money with legacy primary rate interface (PRI) phone service. Bandwidth SIP Trunking is a better way to support your business by giving you more. More scalability. More simplicity. More flexibility. What is PRI? A Primary Rate Interface (PRI) is the legacy method of providing telephone service to larger businesses with a digital PBX. PRI operates within the Integrated Services Digital Network (ISDN) specification for transmitting voice and data between a network and a user. It s based on the T-carrier (T1) line consisting of 24 channels, 23 for voice and one for signaling. For the business user, this equates to 23 lines for phone service, hooked up directly to the telephone company s central office. 2

3 So what s SIP Trunking? Session initiation protocol (SIP) is an application layer protocol similarly used to transmit voice and data between a network and a user. SIP supports the standard call processing functions found in the public switched telephone network (PSTN) for IPbased networks, mimicking PSTN functions such as call ring, ring back, busy, and other signaling based functionality found in the PSTN. SIP Trunking, a service Bandwidth helped pioneer, establishes virtual voice circuits configured and delivered over an Internet connection. Used in conjunction with an IP PBX or traditional PBX with an IP gateway, businesses gain a much more robust replacement for traditional PRI or analog circuits. 3

4 1 The PRI scalability gap In much the same way that cable companies insist you purcase a package of multiple channels to receive the programming from the few channels you actually want, providers sell PRI services in packages of 23 channels for voice. Hire a new employee and now need an extra channel? You now have to upgrade to the next packaged bundle and pay for 23 more channels as opposed to the one extra channel you need. And it gets even more complicated if you have to plan for seasonal call volumes or remote workers. In the case of seasonal workers, with PRI you have to over-engineer your phone system based on your highest need, even if that need is just temporary. With Bandwidth SIP Trunking, you provision trunks only when needed and only for as long as you need them. Teleworkers? PRI leaves you with private extensions with POTs lines and multiple providers and bills. Want a better way? With Bandwidth SIP Trunking, you get a local number for your remote folks, without additional hassles. 4

5 2 Owning the network matters With Bandwidth SIP Trunking your voice traffic runs on our nationwide network, backed by our 49-state certified local exchange carrier (CLEC) status and round the clock customer support and monitoring. We own the network. Plus we integrate with virtually any PBX system. And even if you may not be ready to move to IP, we can suggest IP enabled gateways that will allow your traditional PBX to take advantage of the benefits of SIP trunking. This high degree of control means more flexibility for you. We minimize our third party dependencies to maximize our ability to give you a flexible and simple solution. 5

6 baked in And speaking about 3rd party dependencies, we absolutely can t forget about Bandwidth is one of only three tier 1 providers able to pass VoIP calls into the nation s infrastructure. Of those, we are the only one to also offer SIP Trunking. So yet again, we have a better way because with Bandwidth, you don t need an additional vendor to be compliant

7 A better way to bring voice into your business Stop wasting money and resources on PRI. Bandwidth SIP Trunking gives you a better way, with more scalability, simplicity and flexibility. Bandwidth gives you a single provider one that even covers your needs nationwide. As an originator of SIP Trunking and with thousands of customers deployed Bandwidth is anxious to help you optimize your voice services today! Contact us or visit our Resource Center for more information. For more information: sales@bandwidth.com 7