Embrace interoperation, save money
You can live in a single vendor world, where your solution options and pricing are determined entirely by one vendor, or not. Interoperation is the key to the "or not" option.
TransNexus is a big believer in interoperation. While TransNexus maintains interoperability partnerships with strategic vendors such as Acme Packet, BroadSoft, Cisco and Metaswitch, the TransNexus solution is interoperable with any SIP-based VoIP system.
So why pay attention to interoperation? Interoperation has many positives - better savings, better solutions, and better business flexibility.
Net Cost Savings
In many cases, you already own the assets you need for your required business solutions. For example, you may already have a PBX with desk phones that work just fine and you don't want to replace them in order to get a new UC client for your (BYOD) PCs, tablets and smartphones. You can probably achieve a major savings by not replacing every system component with a single vendor's products.
It is unlikely that you will find that only one vendor offers all the components you need for your business solutions. Or, if one vendor has all the components, it is often the case that one or more of those components represent some compromise of functionality, development roadmap, price, or support. If your team needs to deliver solutions that are best for your enterprise, you will very likely find the need, at least in some cases, to have a multiple-vendor solution that will, by definition, require interoperation.
If you build your IT and Communications team to expect and value interoperation, you will also create flexibility for your firm. If you have a multi-vendor policy you will likely get better pricing options from both vendors. A multi-vendor strategic approach will give you options when one vendor or the other is not taking their roadmap in the directions you need.
An interoperation strategy keeps the door open to innovations in the industry that probably won't justify replacing your entire infrastructure, but will need to interoperate with your primary vendors' solutions.