The S30810-Q2956-X200-8 SLAD8 is an 8 Circuit Digital Extension Card designed to fit the Siemens HiPath 3350 & 3550 Phone Systems. The SLAD8 offers 8 analog interfaces with CLIP function. All conventional telephones and accessories such as a Fax, can be connected. Features: 8 cct Clip Function Compatibility: Siemens HiPath 3350/3550 Version 5.0 Phone Systems