chan_skinny is an asterisk module handling the skinny protocol, to connect natively to the cisco 7900 Series phones. Some of them do not support other voice protocols.
chan_skinny is included in the asterisk distribution, whereas some other modules are available from other projects.
Configuring chan_skinny
The config file is not to complicated, but the problem with skinny phones is most of the time to “boot” them. They expect some DHCP options & some tftp files.
Exemples
cisco 79xx : This page provides links to many interesting documents
Cisco 7920 : Exemple config for a Cisco 7920 Wireless phone
Other modules
chan_sccp-b
Asterisk SCCP channels
July 26, 2017
Phone System 