Yes you do need a different upline interface card. This information should be in Your Technical Reference Manual, Electronics enclosure chapter 6? Y2 Enclosure, card position X8 Downline and X9 upline:
Part No Description. 112045 Base Card 119924 SMPI/UIC (card part no. 112170) 129293 SMEMA (card part no. 112171) 129294 Fuji (card part no. 112716) 129295 Fuji download only (card part no.112716) 129298 TDK (card part no.113936/8) 119923 Dynapert (card part no. 112716) 133125 Sanyo (card part no. 112169) 129297 Siemens (card part no. 112718) 129296 Panasonic (card part no. 112716)
Since You have an GSX and we have an older GS, You might want to look up this information in Your own Technical Reference Manual, Electronics enclosure Y2 enclosure layout (chapter 6.65?). Concider also to give DEK a phone call, it could save You time and money. /Good luck.
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