I do believe the Wookieepedia article is referring to the TLK text instead of voiced audio. There was no dialogue and there was no audio but the text lines are still present in the dialog.tlk as DP has already said.
That being said, I got some more text lines from the TLK you may be interested in. There is no dialogue files or audio files but the text shown here are from the dialog.tlk (do note that I'm merely guessing who says what here).
If you use the StrRef search function and type in any of those numbers you will be able to find the text I quoted. As you can see, the latter half of Telos went through an entire rewrite early on where the original version had you return to Citadel Station after the Military Base, report Czerka's crimes on the surface to Grenn, go to the Ithorian place to get the location of the Polar region, get attacked by Czerka again, fight your way to the TSF Station to contact Opelle, and finally leave on yet another Shuttle to go to the Polar Region.
Do note that Opelle's character IS in the 202TEL module, she's just out of sight.
Using camera hacks, teleporting into the inaccessible areas, or using Holocron Toolset like I am, you can see a Republic Officer down below who we can assume is the NPC the player would've spoken to had Opelle been used in the game. Of course, this NPC might've been a placeholder for either Carth or Cede, or a placeholder until a proper cutscene area could be made (like how Tobin has his ship in 402DXN for that one cutscene) and since this content was cut really early this NPC was simply forgotten and left behind.