KERR111016/2 Ericsson MD110 PBX Module

The Ericsson KERR111016/2 is a CTT11 Physical Key Terminal, a hardware interface unit designed for use with Ericsson MD110 and BusinessPhone PBX systems. This terminal provides physical key functionality for system administration, configuration access, and security management within the telecommunications infrastructure.

The CTT11 Physical Key Terminal serves as an authentication and access control device, typically used by system administrators and maintenance personnel to gain authorised access to protected PBX functions. It forms part of Ericsson’s security framework for their enterprise telephony platforms.

This is a legacy component from Ericsson’s MD110 PBX portfolio, which was subsequently incorporated into the Aastra and later Mitel product lines following acquisitions. While discontinued, these terminals remain essential for organisations maintaining existing MD110 installations that require ongoing administration and security key management.

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