Hi, Thanks for your question.
Tallyman can send TSL version 3, 4or 5 to the Multiviewer for tally as well as for the UMD mnemonic. In the Layout editor set your UMD to tally by selecting the checkbox. Unfortunately the Ultriscape does not accept GVG native for UMD mnemonics.

You should also make sure that the UMD settings are appropriate for how you want to see the names. Under Ultriscape, configuration and tally settings you will find the UMD menu

Additional information is available in the userguide on page 149 here.
https://documentation.rossvideo.com/files/Manuals/Routers/Ultrix/Ultrix%20User%20Guide%20(2101DR-004).pdf
Hope this helps!
Mike P
#Ultrix