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SIP as a standard?


November 12, 2015


July 9, 2021

lines and dot network, background image.

SIP is a standard? We would like to think so. However, the RFCs which define SIP allow for interpretation by manufacturers of PBX’s. Consequently, it is imperative for SIP Trunking providers to certify the interoperability of various call scenarios with individual models of PBX and gain approval from manufacturers. Although an expensive proposition at times, in the long run, it actually saves everyone involved time and money when issues arise. By setting a baseline configuration for successful completion of a variety of calling scenarios, Channel Partners are equipped with the blueprint to replicate solutions which meet their customers’ needs.

Why invest to ensure interoperability with multiple PBX vendors? Because when an issue does arise, the Channel Partner, PSTN provider and Manufacturer can systematically determine the root cause to effect changes to resolve the customer’s problem. This is why Bandwidth has allocated significant resources to ensure interoperability with many PBX vendors. In doing so, Channel Partners can confidently deliver solutions together with a vast array of PBX types powered by Bandwidth SIP Trunking. Our most recent certifications include ShoreTel and 3CX.

Check out the long list of UCaaS and Premise PBX’s which are certified with Bandwidth.