ipLDK-60 SERVICE MANUAL
DIGITAL KEY TELEPHONE SYSTEM
1
SECTION 1. General Description
This manual is intended to provide a full understanding of the architecture, operation, and circuits employed in LG-
NORTEL’s Digital Key Telephone system, ipLDK-60. It is intended for use as an aid in training installation and
maintenance personnel. Also, in conjunction with circuit schematics, this document is intended for use in support of
component level repair by authorized LG-NORTEL repair facilities. The ipLDK-60 is a fully digital switching system
which is intended for small or medium sized business office.
The ipLDK-60 system incorporates state-of-the-art digital technology for command processing and voice switching,
utilizing a Pulse Code Modulation/Time Division Multiplexing (PCM/TDM) distributed switching matrix. The system
supports “A” law voice encoding rule based on the requirements of local regulations.
The ipLDK-60 system achieves a high level flexibility by 1) employing three kinds of option boards, and 2) providing
expansion system.
The KSU of ipLDK-60 is a wall-mounted cabinet that houses the MBU (Main Board Unit) and several connectors for the
CO line/Digital KTU/SLT/Voice mail/LAN interface boards, and other useful boards.
Confidential and Proprietary;
This document contains confidential and proprietary information of LG-NORTEL.
It’s use is subject to the conditions that
it should be used only for the intended purposes as stated in this document that it should not be copied or reproduced in
any manner, in whole or in part, without the express written consent of LG-NORTEL.
