What is a central office trunk?
Coined by the telephone industry, a trunk typically refers to a high-bandwidth, fiber-optic line between switching centers (central offices). Telephone trunks handle thousands of simultaneous voice and data signals, whereas telephone “lines” are the wires from the central office to the customer.
What are trunks in telecom?
A network trunk is a communications line or link designed to carry multiple signals simultaneously to provide network access between two points. Trunks typically connect switching centers in a communications system. The signals can convey any type of communications data.
What is a Co in a phone?
A business telephone system differs from an installation of several telephones with multiple central office (CO) lines in that the CO lines used are directly controllable in key telephone systems from multiple telephone stations, and that such a system often provides additional features related to call handling.
What is a central office in telecom?
In telephone communication in the United States, a central office (CO) is an office in a locality to which subscriber home and business lines are connected on what is called a local loop. The central office has switching equipment that can switch calls locally or to long-distance carrier phone offices.
What is CO and CPE?
In figure below, at the top, a telephone and a telephone switch is shown. The telephone is located in the Customer’s Premises (CP, CPE), while the telephone switch is located in the Central Ofﬁce (CO). In this scenario, the telephone could be referred to as Customer Premise Equipment (CPE).
How does a trunk call work?
In telecommunications, trunking is a technology for providing network access to multiple clients simultaneously by sharing a set of circuits, carriers, channels, or frequencies, instead of providing individual circuits or channels for each client.
What is the function of trunking?
Trunking, a term frequently used in IT and telecommunications, refers to a network configuration that efficiently conveys data between multiple entities without using one-to-one links.
Why is it called a trunk call?
In the UK and the Commonwealth countries, a trunk call was the term for long-distance calling which traverses one or more trunk lines and involving more than one telephone exchange. This is in contrast to making a local call which involves a single exchange and typically no trunk lines.
Do companies still use PBX?
While traditional PBX and IP PBX services still have their function in offices, companies have increasingly moved to VoIP systems, which transfer voice signals across the internet in data packets.
What is exchange in communication?
n. 1 the act or an instance of communicating; the imparting or exchange of information, ideas, or feelings. 2 something communicated, such as a message, letter, or telephone call.
What is Co and PSTN?
The telephone is located in the Customer’s Premises (CP, CPE), while the telephone switch is located in the Central Ofﬁce (CO). In this scenario, the telephone could be referred to as Customer Premise Equipment (CPE). Figure 1: Most basic representation of PSTN – (Public Switched Telephone Network). Loops.
How does a CPE work?
CPE can be provided by the telecommunications provider, such as a cable operator, telephone company or satellite provider. These companies either rent this equipment to the customer, provide it at no charge as part of the service, or allow a customer to purchase and provide their own equipment.
How do you book a trunk call?
Trunk Enquiry : Dial 1581 5/-(Five rupees). If the urgent call is cancelled voluntarily within 30 minutes of its booking time it is charged Rs. 5/-(Five rupees). If the lightning call is cancelled voluntarily within 15 minutes of its booking time it is charged Rs.
What do you mean by trunking?
What Does Trunking Mean? Trunking is a technique used in data communications transmission systems to provide many users with access to a network by sharing multiple lines or frequencies. As the name implies, the system is like a tree with one trunk and many branches.
What happened to switchboard operators?
As automated exchanges became commonplace, the telephone operator became unnecessary for most calls. The old telephone operator function might have almost entirely died out today, but with the modern call center so central to business, the job has evolved to its present day equivalent.
Where can the Central Office Exchange Server be used?
The central office exchange server can be used in local government, professional offices, banks and financial institutions, hotels, colleges, universities, and small businesses.
What is the difference between a telephone exchange and central office?
The term telephone exchange is often used synonymously with central office, a Bell System term. Often, a central office is defined as a building used to house the inside plant equipment of potentially several telephone exchanges, each serving a certain geographical area. Such an area has also been referred to as the exchange or exchange area.
What is a central office?
Often, a central office is defined as a building used to house the inside plant equipment of potentially several telephone exchanges, each serving a certain geographical area. Such an area has also been referred to as the exchange or exchange area.
How do direct inward dial trunks work?
Direct Inward Dial Trunks. When the PBX responds appropriately, the CO sends the digits 1020. The PBX detects the digits and routes the call to the telephone programmed as extension 1020, ringing the instrument. The number of digits sent may vary depending on the service and system that a customer uses.