mobile telephone;  cellular telephone
 telephone call;  telephone (device)
 to telephone;  to make a phone call
 telephone made from two cans and a piece of string
 to hang up;  to end a telephone conversation
 public telephone;  pay phone
 answering machine;  answer phone
 telephone book;  telephone directory
 telephone booth;  telephone box
 to telephone;  to call in;  to ring in;  to contact by phone
 during a telephone call;  busy line
 long telephone conversation;  being on the phone for a long time
 landline telephone;  fixed-line telephone
 video telephone;  video call;  video chat;  skyping
 silent phone call (form of harassment)
 phone duty;  being on call
 black rotary-dial telephone
 telephone threat (e.g. of a bomb)
 telephone bill;  telephone rate
 telephone table;  telephone stand
 cordless telephone;  wireless telephone
 long-distance call;  trunk call
 public telephone (orig. red);  payphone
 telephone fee;  telephone service charge
 direct (telephone) line;  direct dialing
 landline telephone;  fixed-line telephone
 emergency telephone;  emergency call
 phone conference;  conference call
 telephone number at which person without a phone can be reached
 telephone switching station;  telephone exchange;  central office
 urgent phone call;  emergency phone call
 having a bad connection (phone call);  unable to hear (the other person's voice);  having a faint voice
 extension phone (and its main line)
 nuisance phone call;  spam phone call
 Internet telephony;  Internet telephone
 flooding a company, organization etc. with phone complaints (usu. loosely organized on anonymous online message boards)
 subscribed telephone;  subscription telephone
 party line (telephone line shared by multiple subscribers)
 telephony;  telephone communication
 phone interview;  telephone interview
 mobile phone;  wireless phone
 (telephone) call forwarding;  call diversion
 phone in request (e.g. calling a radio station to request a song)
 telephone subscriber;  telephone customer
 free phone consultation;  free phone consultation service
 telephone counselling service
 cellular phone;  mobile phone
 care telephone (e.g. for the aged, disabled, etc.)
 train telephone;  railway radiotelephone
 blue telephone;  (blue) public telephone
 public telephone;  payphone;  pay phone