College】 【weak radio telephone system intercom system and the difference between Group】.

<br> <BR> the advantages of wireless communication with wireless stations (radio) the establishment of private radio transmission with less investment than the other way, opening, operation and maintenance fast and simple, more say they are as follows: 1. .Cheap cost of wired communications <BR> establishment must set up the cable, or digging trenches, it requires a lot of human and material resources; but with a dedicated radio station is no need to set up the wireless transmission cables or dig trenches, only in each .terminal connection set up the appropriate radio and antenna height on it. .In contrast with special radio transmission, saving manpower and resources, the investment is quite the savings. .And in some close range communication systems (for example: Building Communications, a small regional communications, etc.), the performance of wireless communication is more flexible, often radio signals can cover a small region-wide buildings and above ground, rather than .and then set up the wireless repeater. .If you need the wireless signal to reach the underground parts of buildings or small areas within the blind area, the re-erection of the wireless repeater to extend and expand the signal range. .2. .Construction period is short <BR> When should a few kilometers to tens of kilometers away from the remote site to communicate with each other when connected by cable means the cable must be set up long-distance or long cable trench excavation, the project cycle may be .take several months, but with the radio station set up private wireless network, just set up a suitable height of the antenna, project cycle, only a few days or a couple of weeks, compared to the way you can quickly set up wireless communication link from .Road, shorten project cycle. .3. .<BR> Wireline communications adaptability is too restrictive, in the face of some special applications, such as the encounter mountains, lakes, forests and other special geographical environment or moving objects such as wiring applications more difficult when ., will have a wired network cabling project constraints strong force, and establishment of private radio stations with the wireless network will not be these restrictions, so that with the establishment of private radio stations than in wireline communications wireless network communications are better and more extensive .adaptability, almost no geographical restrictions. .4. .Good scalability <BR> good in the user form a communication network, often because the system needs to add new devices. .If using a wired way, need to re-wiring, construction is too much trouble, but also may undermine the original lines of communication, but if communication with the wireless network, simply clone the contents of the original terminal equipment to new equipment, we can achieve .equipment expanded, compared with better scalability. .5. .<BR> Terminal equipment easier to use fixed wired communications terminal equipment are not mobile, and wireless terminal equipment (including: radio, vehicle sets, etc.) are portable and can carry anywhere communications, mass response. .<BR> <BR> PBX with the use of the value of the increasing volume of business, many sales of communication with customers is to adopt a more modern "phone sales model," but at the same time your company in the development of the existence of the following problems: ., many departments, telephone less, so your productivity and system greatly reduce the external shared so everyone has a perimeter with expansion, productivity doubled. .Second, personnel, business is busy, interconnected hard, inside features of a benefit unit of your choice, the internal relations of a variety of ways to save time and money. .Third, the paging phones or yelled running around outside is very easy to transfer, and can broadcast paging, to keep the office quiet. .Fourth, when you walk the other office, the phone allows customers to lose confidence in the empty ring can pickup any phone outside, inside and outside lines can be set to follow. .Fifth, when you use the outside line, the external information can no longer pass, both the loss and angry customers a phone number can receive outside calls, allowing you to make reasonable arrangements. .VI, important meetings, meeting with guests, or unnecessary delay in the work of the phone even bother to make things difficult for Secretary of the function and specify your ring and do not disturb settings, allowing you to polite, calm. .Seven, when you are not the company, so far many long-distance telephone customers to find, is likely to lose important information can be transferred outside, but also three-way calling, allowing you to access information at any time. .Eight, waiting for phone calls not only waste time and annoying for you to set the outside line and if necessary, to seize under the outside, you can set up your dedicated outside line nine, the staff of the private affairs hotline, private long distance, so you get angry and .feel bad for you to set off a long call, long distance limitations at all levels of the official designated to play long-distance telephone, and is equipped with charging devices. .General phone applications can be realized as the telephone card hand only..