18.4. Skype Integration

Skype integration now exists with Asterisk through a commercial module from Digium called Skype for Asterisk (SFA).^[192] The SFA module loads directly into Asterisk and allows communication with all users on the Skype network directly by using an account created on the Skype Manager. Previous methods were messy, requiring the use of a Windows-based computer running another instance of Skype controlled via an API (application programming interface) and directing media to a sound card and into Asterisk via chan_oss or chan_alsa. Now, two methods exist: SFA and Skype Connect (formerly known as Skype for SIP).

^[192] Skype for Asterisk currently retails for $66 per license, and includes a G.729 license. Each license permits one simultaneous call.

As an Asterisk module, Skype for Asterisk does have some features that Skype Connect does not, including text chat, presence updates, and the ability to call a Skype user directly rather an via SkypeIn number. Additionally, Skype for Asterisk utilizes Skype’s encryption for calls, which provides security benefits without the need to use SRTP (secure RTP) with SIP.