Transmat portal

A transmat portal was a variant of transmat that opened a portal to travel from one point to another. A Dalek transmat portal was connected to Hellcombe Hall, Hellcombe Factory, Erik Graul's factory and in the trench system on France. (COMIC: The Dalek Project)

In an alternate timeline created when Rassilon allied with the Cyberiad, the Eleventh Doctor and Alice Obiefune found the Cybermen assimilating the Silurians on prehistoric Earth. To halt the scheme, the Doctor hacked into a Silurian transmat portal that took him and Alice to the main conversion theater before he used the portal to teleport Alice back to his TARDIS when the situation grew too dangerous for his liking. (COMIC: Supremacy of the Cybermen)