The Unify OpenScape Business X8 SLMU is a professional accessory for setting up extensions in corporate communication systems. This unit serves as an expansion module that enhances the functionality of existing OpenScape Business installations, providing additional capacity and flexibility for business telephone networks. The X8 SLMU model offers extended port connectivity to support multiple telephone lines and extensions in medium to large office environments. Built with industry-tested components, this accessory features a robust metal casing with dimensions of approximately 430 mm in width, 44 mm in height, and 210 mm in depth, weighing 1.8 kg. The unit operates within standard telecommunications temperature ranges of 0 °C to 40 °C and requires minimal power consumption for efficient 24/7 operation. Installation is straightforward with rack-mount compatibility and standard network interfaces. The X8 SLMU supports various telephony protocols and integrates seamlessly into Unify's OpenScape Business platform, enabling advanced call forwarding, voicemail systems, and unified communication features. This accessory is particularly valuable for businesses that need scalable communication solutions that can grow with organizational demands. The model maintains compatibility with existing Unify infrastructure while delivering the reliability and performance expected from enterprise-grade telecommunications equipment. For optimal performance and system integration, professional installation by qualified technicians is recommended.