video;
No, although it is clear that the wardens have access to technology that they do not make available to their inmates. The Borg have encountered species with similar transdimensional capabilities, but without direct access to the technology itself, I cannot determine the direct cause. I do, however, speculate that the dome itself is encased in some sort of temporal field which protects its inhabitants from the affects of space-time, which could very well be interfering with transmissions.