DoubleHorn Combines Avaya-Compliant SIP Trunks with Avaya Platforms2017-03-022018-02-09https://doublehorn.com/wp-content/uploads/2018/04/logotagline2.pngDoublehornhttps://doublehorn.com/wp-content/uploads/2017/03/blog-avaya-aura-platform-the-original-pragmatic-hybrid-cloud-840x420-copy.jpg200px200px