Tok'ra subspace network

From The Stargate Omnipedia

Subspacenetworktokra.jpg

Immense communications network constructed by the Tok'ra, existing entirely in subspace. The network can be accessed via Tok'ra subspace receivers.

KEY EPISODE

Reckoning, Part 1 - Jacob Carter / Selmak accesses the Tok'ra subspace network via a subspace receiver.