Siemens 4980042613-1906 MEM-4 Memory Card Plug-In Module PBX RevA2-FS1

Siemens 4980042613-1906 MEM-4 Memory Card Plug-In Module PBX RevA2-FS1

This is a Siemens MEM-4 memory plug-in card, part number 4980042613-1906, revision RevA2-FS1. It is a PCB-format memory expansion module designed for use in Siemens telephone switching and PBX systems. The board features a large array of DIP memory ICs along with two ceramic ASIC or processor packages, consistent with memory and control functions in Siemens telecom platform hardware.

Specifications & What's Included

• Manufacturer: Siemens
• Card type: MEM-4 Memory Plug-In Module
• Part number: 4980042613-1906
• Revision: RevA2-FS1 (visible on card label)
• Form factor: Plug-in card / PCB module with dual ejector latches
• Edge connector: gold-fingered card-edge connector for plug-in backplane installation
• Main ICs: large array of DIP memory chips (rows visible on component side); two ceramic ASIC/processor packages
• ESD warning: marked on label — handle with appropriate ESD precautions
• Included: card only

Applications

The MEM-4 is a memory expansion or memory subsystem card for Siemens telecommunications switching equipment, consistent with Siemens PBX and digital switching platforms such as the EWSD, Hicom, or related Siemens enterprise telephone system lines. In these systems, plug-in memory cards like the MEM-4 provided the RAM or storage resources needed by the system processor to handle call routing tables, subscriber data, and system programming. These cards plug directly into a backplane or card cage within the switching chassis, making them field-replaceable modules. They are typically sought as replacement or spare boards for maintaining legacy Siemens PBX and switching installations that remain in service.