How do you know what telephone you have?

The type of handset you are using is clearly labelled either underneath or on top of the telephone base.

For example:

Analogue handsets: ATL, BT Converse, Interquartz

Digital handsets:

  • Siemens Optiset 'E' entry, basic, standard or advance
  • Siemens Optipoint 500 entry, basic, standard or advance
  • Entry phone handbook
  • Digital basic and standard phone

IP handsets: Siemens Openstage 20