Product manual

Maintenance, Fault signalling

Technical Product Manual - DCT1800-GAP

TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C

3.4 Individual user complaints

Individual user complaints are complaints received from only one user or, theoretically spoken, two

or more users who do not have any relation with each other, like being in different areas or using

analogue lines on different LTUs etc.

Individual complaints point to parts in the system that can only be accessed by that particular cordless

phone. These parts are the cordless phone itself, the charger, or if applicable, the analogue interface

to the PBX (LTU circuit, wiring, PBX extension line circuit). Unlike faults in for instance base stations

or system boards, which affect more than one user and mostly cause error reports, these type of faults

cannot be detected by the system, simply because of their nature. However, individual complaints are

generally easy to trace.

Before any part of the system is suspected, it should be made clear that no handling faults have

occurred. Typical handling faults are:

• Cordless phone out-of-range (no system) or battery empty or cordless phone not switched on

• ‘Hook flash’ set on (if applicable), causing difficulties in going on or off hook

• Audio and ringing volume too low

• ‘Ringing’ switched off

• Wrong system (network) selected while system (network) selection not in the automatic mode

3.5 Common user complaints

Common user complaints are similar complaints received from several users at the same time.

Somehow these complaints have a common source and fault finding is based on finding that common

aspect:

• Faults occurring in the same area: A base station may be suspected.

• Cordless phones on sequential PBX lines:Same LTU, same cabling?

• Blocking calls: Lack of resources in SPCs (SPUs, SPU-Ss

and/or SLUs) or too many users on one base

station (maximum 8 simultaneous calls).

3.6 LEDs

On all system boards and base stations LEDs can be found. Those LEDs may not and cannot be

taken as alarm signalling devices because they are usually out of sight. However, sometimes they

may give additional information to maintenance personnel.

All system boards have 4 identical LEDs on the top, except the DTU board which has two rows of 4

LEDs. The CPU board is equipped with two extra LEDs. Base stations have two LEDs on either side

of the connector.