A 1970 police call centre in Brierley Hill, England

A very large collections call centre in Lakeland, Florida.

A typical call centre worker's desk environment in Lakeland, Florida | Lakeland, Florida, United States.

A call centre or call center is a centralised office used for the purpose of receiving or transmitting a large volume of requests by telephone.

An inbound call centre is operated by a company to administer incoming product support or information inquiries from consumers.

In addition to a call centre, collective handling of letters, faxes, live chat, and e-mails at one location is known as a contact centre.

A call centre is often operated through an extensive open workspace for call centre agents, with work stations that include a computer for each agent, a telephone set / headset connected to a telecom switch, and one or more supervisor stations.

The concept of the Universal Queue standardizes the processing of communications across multiple technologies such as fax, phone, and email whilst the concept of a Virtual queue provides callers with an alternative to waiting on hold when no agents are available to handle inbound call demand. A typical call centre telephone.

Historically, call centres have been built on PBX equipment that is owned and hosted by the call centre operator.

With the advent of the Software as a service technology delivery model, the virtual call centre has emerged.

In a virtual call centre model, the call centres operator does not own, operate or host the equipment that the call centre runs on.

Instead, they subscribe to a service for a monthly or annual fee with a service provider that hosts the call centre telephony equipment in their own data centre.

By Theorem 10, D is a diagonalizable operator which we shall call the diagonalizable part of T.

In Hollywood movie Transformers when the Defense Purpose electronic communication fails ( mainly due to interference of the villain entities ) an officer tries to place a call back home through commercial network, but fails to get through the typical Indian call center, mainly due to the over-zealous salesmanship of the Indian operator who is more interested in advertising their new package than putting the call through.

Brando was an active ham radio operator, with the call signs KE6PZH and FO5GJ ( the latter from his island ).

A major selling point of dial telephone service was that it was " secret ", in that no operator was required to connect the call.

When a call is received, a jack lamp lights on the back panel and the operator responds by placing the rear cord into the corresponding jack and throwing the front key forward.

Before the advent of direct-dialed long distance calls, a subscriber would need to contact the long-distance operator in order to place a toll call.

When calling long distance, the calling party would give the name and city of the person desired, and the operator would advise the calling party to hang up and wait for the call to be completed.

The inward operator would obtain the number from the local information operator, and ring the call.

The calling party's long distance operator would time the call for billing purposes.

If the customer knew the number, and the point was direct-dialable, the operator would dial the call.

The operator might be able to use a different routing to complete the call.

If the operator could not get through by dialing the number, she could call the inward operator in the destination city, and ask her to try the number, or to test a line to see if it was busy or out of order.

The customer would, instead of simply dialing " 0 " for the operator, dial 0 + NPA + 7digits, after which an operator would answer and provide the desired service ( coin collection, getting acceptance on a collect call, etc.

Upon successful linking, the receiving station generally emits an audible alarm and shows a visual alert to the operator, thus indicating the incoming call.

I let up on the accelerator, only to gradually reach again the 60 m.p.h. which would, I hoped, overhaul Herry and the blonde, and as there were cars whose drivers apparently had something more important to catch than had I, Mrs. Major Roebuck settled down to practicing on Corporal Johnson the kittenish wiles she would need when making her duty call on Colonel and Mrs. Somebody in Sante Fe.

In his Message of December 2, 1862, he put his purpose and his policy in these words -- which I would call the Lincoln Law of Liberty-and-Union: `` In giving freedom to the slave, we assure freedom to the free ''.

The Commission seems to represent the viewpoint of what I would call the unconscious liberal, but not unconscious enough, to invoke the now taboo symbolism of socialism.

At the order of the Dowager Electress, the Hanoverian agents, supported by the Whig leaders, demanded that a writ of summons be issued which would call the Duke to England to sit in Parliament, thus further insuring the Succession by establishing a Hanoverian Prince in England before the Queen's death.

Now and then, the President would call for `` Little Jack, Master of the Hounds '', which was his nickname for a messenger who had worked in the White House since Teddy Roosevelt's administration, and discuss the welfare of some one of the animals.

At dinner, lunch, or breakfast, the President would call out, `` Supper ''!!

I would say, too, that the study of literature tends to give a person what I shall call depth.

Apropos of what some would call cynicism, I remember an anecdote the source of which I forget.

Just as I know I would make a bad soldier even though I cannot sincerely call myself a pacifist, so too I would not be either a hangman by profession or, if I could avoid it, even a member of a hanging jury.

He does not expect to get great riches or he would not have chosen to answer the call to preach.

I did have the decency to call up Thelma and tell her I'd met old friends and would be home late.

As daylight began to show through the frosty windows, Fogg would place a call to William A. Shaw at the U. S. Weather Station at Northfield, Vermont, for temperature and wind-velocity readings.

Still she would probably have sense enough not to call in the local sheriff to find her boy friend who, apparently, had run away.

She wondered whether Stanley would call.

Madden said that he would see him at two and made another call, this one to Mrs. Meeker's lawyers.

You would call these the motives of crime.

I would call them the patterns of life, perhaps even the designs of destiny.

Yet with all this knowledge I had nothing of substance to unravel our case, as you would call it, till yesterday.

A century ago, Newman saw that liberalism ( what we now might call secularism ) would gradually but definitely make its mark on English Protestantism, and that even high Anglicanism would someday no longer be a `` serviceable breakwater against doctrinal errors more fundamental than its own ''.

but the spirit he wished to call out would not, he knew, come in the person of the temple priest.

And there would be no chance of signaling them -- without the Nernst generator Jack could not send a call powerful enough to get through all the static, and by the time he could rebuild his fusion power the skiff would be gone.