Towertalk

Clantalk is the channel which allows all those in the same guild to
communicate. Handtalk allows all the aiel societies to speak to
eachother. TowerTalk is for the Aes Sedai, Warders, Tower Guard
and Younglings to share information. The followers of the Dark
One can use DarkTalk to chat. Treetalk allows the Treebrothers and
Treesisters to share information.