- NEC DSX 4 port CO line card - For use with the DSX 40 - Provides interface for 4 additional CO lines - Maximum one per system NEC1091001 Sold Individually Please note: If there is a color/size/type option, the option closest to the image will be shipped (Or you may receive a random color/size/type). BRAND : WMU PRODUCT_CODE : 714627135266 PRODUCT_CODE_TYPE : UPC
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