Keep in mind that basic services such as electricity, gas, water, sewage treatment, and telephones may be cut off for an extended period of time.
Before the end of the century, modern infrastructure such as electricity, telegraph and telephones began to appear.
Technology such as mobile telephones and the Internet have provided people with other choices for communications.
Increasing demand for services such as mobile telephones and many others has required changes in the philosophy of spectrum management.
Common examples are communication devices such as telephones or fax machines.
During the attack on September 11, 2001, common communications (such as telephones) did not work well, because so many people were using them.
Viruses can live on surfaces such as tables, desks and telephones for up to three hours.
Other amenities such as water supply, electricity, telephones and schools are also available.
Much of our awareness about various issues wouldn't be possible without technology such as telephones, television, newspapers and, especially now, the Web.
They also used samples of sounds such as dogs and telephones.