switel DC 44 Bedienungsanleitung Seite 134

Faults
Display is dark
The caller number display
(CLIP) does not function
134
- Troubleshooting -
Corrective measures
- Caused by exposure to direct sunlight.
Allow the handset to cool down.
- The caller number display function is an
optional service offered by telephone net
work providers. Contact your network pro
vider for further information.
- The caller has suppressed the transmis
sion of their phone number.