Operation Manual
Table Of Contents
- Welcome
- Table of Contents
- Important
- Description
- Incoming Calls
- Outgoing Calls
- During Calls
- Call Forwarding
- Information
- Internal Messages
- Mailbox System
- Hot Keys
- Group Facilities
- Other Useful Facilities
- Security
- Least Cost Routing
- Phone Book
- Settings
- Audible Adjustments
- Tones and Signals
- Useful Hints
- Installation
- Troubleshooting
- Glossary
- Index
- Voice Guide
Installation
BusinessPhone – Cordless DT400/DT410/DT420/DT43092
SIM Card
All your personal settings in the handset are programmed and
stored in the Subscriber Identity Module (SIM) card.
The SIM card provides you with personal mobility as you can easily
move it to another Cordless telephone, enabling you to receive
calls, make calls and keep all your personal settings such as phone
book, identity and alert signal.
Changing the SIM Card
Note: Change the SIM Card only in an environment without
static electricity.
Remove the battery
See section “Removing the battery” on page 88. The SIM card is
placed under the battery unit in a hatch in the middle.
Move the steel plate forward to open the hatch
You see the labels “OPEN” and “LOCK” on the steel plate.
Push the steel plate carefully in one of the directions.
Lift the hatch and remove the SIM card
Now you can place it in another Cordless.
Press the hatch and move the steel plate forward to lock
Fit the battery
See section “Fitting the battery” on page 89.
SIM Card
Hatch with
steel plate