This free Audio Client app enables concurrent PSTN connections provided by Verizon® and SIP audio connections to the CONTEX Summit® media processor, and provides users with options to use their iOS device to participate in high quality audio conferences on the CONTEX Summit. Regardless of how they join, all users are able to collaborate seamlessly in the fully integrated audio conference. Seamless download of the audio client, use of speakers and microphone to participate in the call – no wireline phone is necessary.