{"product_id":"siemens-39acm28aen-digital-line-circuit-module-24-digital-ports-hipath-4000-openscape-4000","title":"Siemens 39ACM28AEN | Digital Line Circuit Module | 24 Digital Ports | HiPath 4000 \/ OpenScape 4000","description":"\u003ch3\u003eProduct Description:\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan\u003eSiemens 39ACM28AEN\u003c\/span\u003e (often known by its SLMO24 or SLMO family name) is a \u003cspan\u003ehigh-density Digital Line Circuit (DLC) module\u003c\/span\u003e specifically designed for \u003cspan\u003eHiPath 4000\u003c\/span\u003e and \u003cspan\u003eOpenScape 4000\u003c\/span\u003e communication servers. This module offers 24 digital channels, allowing seamless integration of Siemens \u003cspan\u003eOptiset\u003c\/span\u003e and \u003cspan\u003eOptipoint\u003c\/span\u003e digital telephones with the PABX (Private Automatic Branch Exchange) system.\u003c\/p\u003e\n\u003cp\u003eAt the heart of this module is its use of the \u003cspan\u003eUP0\/E\u003c\/span\u003e digital interface, which supports efficient communication between the system's internal pulse-code modulation (PCM) highway and the digital signaling used by Siemens' advanced telephones. The \u003cspan\u003e39ACM28AEN\u003c\/span\u003e serves as a reliable \"workhorse\" in enterprise telephony, enabling voice and data to travel over a single pair of copper wires, effectively simplifying infrastructure while maintaining performance.\u003c\/p\u003e\n\u003cp\u003eThe \u003cspan\u003eEN\u003c\/span\u003e suffix in the model indicates that this version is optimized for international or regional hardware revisions, supporting global telecommunications standards for consistent, reliable performance.\u003c\/p\u003e\n\u003ch4\u003eKey Features and Functions:\u003c\/h4\u003e\n\u003col class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eUP0\/E Digital Interface:\u003c\/span\u003e\u003cbr\u003eThe \u003cspan\u003eUP0\/E\u003c\/span\u003e interface employed by the \u003cspan\u003e39ACM28AEN\u003c\/span\u003e supports \u003cspan\u003e\"Master-Slave\" configurations\u003c\/span\u003e, enabling \u003cspan\u003etwo digital phones\u003c\/span\u003e to be connected to a single port using a \u003cspan\u003eT-Adapter\u003c\/span\u003e. This significantly enhances wiring efficiency, making the system ideal for large-scale deployments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePower over Line:\u003c\/span\u003e\u003cbr\u003eThis module supplies \u003cspan\u003eDC power\u003c\/span\u003e to connected digital devices, such as displays and internal processors of the phones, eliminating the need for local power adapters at each desk. As long as the central PABX system has a UPS, the phones will continue to function even during power failures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eIntegrated Diagnostics for Proactive Monitoring:\u003c\/span\u003e\u003cbr\u003eThe \u003cspan\u003e39ACM28AEN\u003c\/span\u003e module offers advanced \u003cspan\u003eline-monitoring capabilities\u003c\/span\u003e, allowing administrators to remotely detect:\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eShort Circuits\u003c\/span\u003e: Identifying wiring faults for faster troubleshooting.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eTerminal Status\u003c\/span\u003e: Verifying the operational status of connected phones.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eTransmission Quality\u003c\/span\u003e: Monitoring bit error rates on the digital loop for performance assurance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eHot-Swap Capability:\u003c\/span\u003e\u003cbr\u003eDesigned for high availability, the \u003cspan\u003e39ACM28AEN\u003c\/span\u003e can be \u003cspan\u003ehot-swapped\u003c\/span\u003e. The module can be inserted or removed without taking the system offline, ensuring minimal disruption. Once inserted, the system's central processor automatically uploads the correct firmware to the module, ensuring version compatibility.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch4\u003eTechnical Specifications:\u003c\/h4\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\" width=\"NaN\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003e\u003cspan\u003eFeature\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eSpecification Details\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel Number\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e39ACM28AEN\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSystem Compatibility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eSiemens HiPath 4000 \/ OpenScape 4000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eInterface Standard\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eUP0\/E (2-wire Digital)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eChannel Density\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e24 Digital Ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMax Distance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 meters (depending on cable gauge)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eData Rate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e128 kbps (2 x 64 kbps B-channels + D-channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProtection\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eIntegrated Overvoltage and Sneak Current Protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMounting\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eAP 3700 \/ IPDA Peripheral Shelf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePower Consumption\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 1.5W per active port (varies by terminal type)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSupported Terminals\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eSiemens Optiset E, Optipoint 500, OpenStage T (Digital)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eInstallation and Connection Details:\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMounting Location\u003c\/span\u003e: The \u003cspan\u003e39ACM28AEN\u003c\/span\u003e is installed in a peripheral shelf (AP 3700 \/ IPDA) within the HiPath 4000 or OpenScape 4000 system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFront-End Connection\u003c\/span\u003e: The module connects to the backplane using the \u003cspan\u003eSIVAPAC\u003c\/span\u003e connector.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMDF Wiring\u003c\/span\u003e: The module’s 24 ports are typically connected to a \u003cspan\u003eMain Distribution Frame (MDF)\u003c\/span\u003e using shielded \u003cspan\u003e25-pair or 50-pair cables\u003c\/span\u003e, often with \u003cspan\u003eChamp or RJ21 connectors\u003c\/span\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eTerminal Support\u003c\/span\u003e: Compatible with Siemens \u003cspan\u003eOptiset E\u003c\/span\u003e, \u003cspan\u003eOptipoint 500\u003c\/span\u003e, and \u003cspan\u003eOpenStage T (Digital)\u003c\/span\u003e series handsets, providing flexibility in device compatibility.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications:\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan\u003eSiemens 39ACM28AEN\u003c\/span\u003e is designed to support enterprises and large organizations that require a high-density, reliable, and scalable solution for integrating digital handsets into their communication infrastructure. It is widely used in:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCorporate Offices\u003c\/span\u003e: Providing robust and scalable digital telephony solutions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eHospitals\u003c\/span\u003e: Connecting numerous digital phones across large facilities.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eLarge Campus Environments\u003c\/span\u003e: Offering high-density telephone systems with minimal wiring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ):\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eQ: What is the 39ACM28AEN used for?\u003c\/span\u003e\u003cbr\u003eA: The \u003cspan\u003e39ACM28AEN\u003c\/span\u003e is a \u003cspan\u003eDigital Line Circuit Module\u003c\/span\u003e that enables integration of \u003cspan\u003eSiemens digital telephones\u003c\/span\u003e (Optiset, Optipoint, OpenStage) into the \u003cspan\u003eHiPath 4000\u003c\/span\u003e or \u003cspan\u003eOpenScape 4000\u003c\/span\u003e PABX systems. It allows for high-density digital channels over a single pair of copper wires.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eQ: Can the 39ACM28AEN be installed without shutting down the system?\u003c\/span\u003e\u003cbr\u003eA: Yes, the \u003cspan\u003e39ACM28AEN\u003c\/span\u003e is \u003cspan\u003ehot-swappable\u003c\/span\u003e, meaning it can be installed or removed without interrupting system operation, ensuring continuous service in critical environments.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eQ: Does the 39ACM28AEN support remote diagnostics?\u003c\/span\u003e\u003cbr\u003eA: Yes, it includes advanced \u003cspan\u003eline-monitoring features\u003c\/span\u003e such as detecting \u003cspan\u003eshort circuits\u003c\/span\u003e, checking \u003cspan\u003eterminal status\u003c\/span\u003e, and monitoring \u003cspan\u003etransmission quality\u003c\/span\u003e for proactive system maintenance.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":44091744321635,"sku":"39ACM28AEN","price":320.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/2775\/3315\/files\/39ACM28AEN.jpg?v=1774922170","url":"https:\/\/precisemodule.com\/products\/siemens-39acm28aen-digital-line-circuit-module-24-digital-ports-hipath-4000-openscape-4000","provider":"Precise Module Ltd.","version":"1.0","type":"link"}