Ericsson ROJ20720/1 GSM / AXE10 Telecom System Card / Module

The Ericsson ROJ20720/1 is a TS4B board used within Ericsson’s GSM/AXE-10 switching equipment, documented in Ericsson equipment inventories as a GSM module. TS-prefixed boards in Ericsson’s AXE-10 hardware generation are typically Time Switch cards, handling time-slot switching of digital traffic within the exchange as part of the group switch subsystem. The TS4B fits into a standard Ericsson magazine and communicates with the rest of the exchange over the internal backplane, working alongside other AXE-10/GSM system cards to route and switch calls through the network. AXE-10 and associated GSM exchange hardware from this generation remain in service in a number of legacy mobile and fixed networks, and operators continue to maintain them with tested used parts as new stock is no longer produced. Tech-Star supplies the ROJ20720/1 as a tested pull from decommissioned Ericsson equipment, suitable for engineers who need a working replacement card, a hot spare, or stock to support an ongoing maintenance contract. Get in touch to confirm the exact revision and configuration required for your exchange before ordering.