SILK replaces the previously used SVOPC in Skype, which was a in-house solution to replace the iSAC and iLBC, which again were licensed from Global IP Solutions.
SILK取代了早前在Skype中使用的SVOPC（英语：SVOPC），其是一个取代iSAC和iLBC的内部解决方案，这也是再次从Global IP Solutions取得授权。