Ericsson DT570 User Manual page 53

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BusinessPhone - Portable Telephone DT570
Account number
You can place costs for external calls on a selected account
number (up to 15 digits).
Dial
#
Enter account number and press
Press
YES
Internal dial tone, make the external call.
Doorphone
The doorphone is used to monitor the admission to your
company, i.e you can open the doorlock from your phone.
Answering doorphone calls
Press
YES
You will be in speech connection with the calling party.
Opening of the doorlock
After you have answered the doorphone, you can open the door
making an inquiry to the door-opener's directory number
Press
YES
Dial the door-opener´s directory number
Please ask your system administrator for the number.
Other Useful Facilities
53