2/ROFNB15713/6 Ericsson MD110 PBX Module

The Ericsson 2/ROFNB15713/6 is a DTU-CA (Digital Trunk Unit – Channel Associated) module designed to provide digital trunk interfaces for Ericsson telecommunications systems. This unit enables connectivity between the PBX or exchange system and external digital trunk lines, handling the signalling and transmission requirements for voice traffic.

The DTU-CA is typically deployed within Ericsson MD110 business communication systems or AXE exchange platforms, where it provides E1/T1 digital trunk connectivity with channel associated signalling (CAS). This allows integration with public switched telephone networks and private tie-line connections between sites.

This is a legacy Ericsson product from the MD110/BusinessPhone era of enterprise telephony. While these systems have been superseded by newer IP-based platforms, many installations remain in active service and require replacement boards for maintenance and expansion purposes.

Available from Tech Star as new or refurbished stock. Submit a price enquiry for availability and lead time.