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<a class="rwp-pr" href="http://rwire.com/318927">EtherSpeak Earns SIP Trunking Interoperability Certification with Zultys MX Series IP PBX Systems</a><script>!function(){var e="rwp-platform";if(!document.getElementById(e)){var t=document.createElement("script");t.id=e,t.src=("https:"===document.location.protocol?"https":"http")+"://publisher.releasewire.com/embed.js",t.async=!0,document.body.appendChild(t)}}();</script>

EtherSpeak Earns SIP Trunking Interoperability Certification with Zultys MX Series IP PBX Systems