Technical data
Service menu 
48 
Service menu 
The service menu offers you information on the currently installed program version, to resume the factory pre-set, to erase the 
electronic telephone book or to load the latest program version via the telephone network. In addition to that, you have the possi-
bility to copy the electronic telephone book from one Retell 340 to another Retell 340 via the audio interface. To do so, set one of 
the devices to “Receive electronic telephone book data” and set the other Retell 340 to “Send electronic telephone book data”. 
The function “factory pre-set” allows you to resume the basic settings. The call list and all recordings (also OGMs and individual 
ringing tones) are erased. The electronic telephone book entries are retained. You can erase the entire electronic telephone book 
via the function “erase electronic telephone book”. The function “Software download” serves to load the latest program version via 
the telephone network. Here, the former program is replaced by the latest version. A download process can take up to 15 minutes 
and it will be charged according to your local provider's telecommunication charges. You should only run the download in the case 
of technical problems – and after having contacted our technical support. 
Press the menu button.  The display shows the main menu. 
Use the arrow buttons (up/down) to search for the 
menu item “service menu”. 
Press the select button next to the menu item “service 
menu”. 
The display shows the service menu. The current program 
version is shown in the first display line (at the right side). 
Use the arrow buttons (up/down) to select the desired 
function 
The display shows all service menu functions. 
Press the select button next to the desired function and 
follow the instructions given in the display. 










