By choosing OnSIP as your phone service provider, you've already made a great decision. OnSIP works with any SIP phone; it doesn't limit the end user to particular phones. We've reviewed many desk phones and soft phones so that our customers can make informed decisions. Having said that, there are some phones that perform better than others. At a time when IT specialists and small and medium businesses are looking to cut costs and improve efficiencies, we are excited to announce a new phone certification program to recommend the best investments to our customers and others. (Read our press release here.)
Interested manufacturers and developers can complete an application available at http://www.onsip.com/certification-program and participate for free. Once the complete application is submitted, we will perform thorough interoperability tests, and if the phone passes all the test cases, it will be labeled OnSIP certified. Phones that are submitted to the program will also get pushed up the queue for our phone review program.