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- basic characteristics and parameters;
- parameters of the display and keyboard;
- security features;
- functions and services supported by the operator;
- memory function;
- additional features;
- configuration items.
Basic characteristics and parameters
Weight (city, usually with standard battery). Here is a little trick. Several companies give a lot of the little battery (Slim), whose capacity is lower than the standard, but the time of talk / standby provides for a standard. Dimensions (mm) (with standard battery) / Volume (cc).. Duration of talk time without recharging (min.). The duration of standby battery life (hours). Here we want to draw attention to a battery (standard or large) are given these values. In a number of brochures can be found very attractive values, but the fine print will be noted that this data for a large battery. Type of battery as standard / Capacity (mAh). Most modern batteries are equipped with ST-type Li-Ion (Li-Ion). They are lighter and at the same volume and mass have a greater capacity than previously used lower-cost Nickel-Metal Hydride (Ni-MH). Besides batteries, such as Li-Ion does not have "memory" effect, ie does not require full discharge before recharging, which reduces the time required for charging, and simplifies the charger. The latest achievement in this area are battery type Lithium-Polymer (Li-Pol), having at the same dimensions as the Li-Ion high capacity and lower weight. Charge Time (min.). Typically in the range 2 - 3 hours. Operating temperature range. If you intend to work with ST at low temperatures, one should bear in mind that the battery capacity while decreasing, ie, reduced operating time.Display Options
Type. Current displays include the graphic type, ie can play both alphanumeric and graphical information, such as images that accompany a particular SMS-text messages. Some models, mostly to the 1999 release have alphanumeric displays, the possibilities are limited. If the display of the image type, its main consumer option should be considered - the resolution of which determines the number of points - pixels, forming a matrix. Naturally, the larger the display size and resolution of AxB (pixel), the clearer the information is reproduced. Today is dominated by monochrome displays. Color displays - until a rarity in CT. Following the model of Siemens S10, such exotics on the market did not appear. Some models provide dynamic change font sizes, depending on the amount of reproducible data. For many customers is essential illumination color. But today you can find PTs whose highlighting color changes according to the choice of its owner, or can be programmed for a certain color depending on the situation, for example, call a subscriber whose number is entered in the notebook into a specific group.Keyboard Options
Redial the last number dialed by pressing a single button. This function creates a certain comfort when typing. The number of speed dials (the latter: incoming / outgoing / from the notebook). If before this feature was only CT Business Class now speed dial in models of consumer class - element binding. Locking the keypad from the menu.Very useful function in different situations. Mute button. Allows for the rapid increase in confidential dialogue. Availability of technology speed dial (like T9). Typing, for example, SMS messages, this technology allows faster set. Introducing the first characters, the user sees on the screen the word that the program extracts from the dictionary stored in memory ST. This will be the most probable word corresponding to a given set of first symbols. While the system speed dial worked for the Latin languages. Cyrillic support in the recruitment of SMS. To enter the Cyrillic alphabet in a notebook, and in the SMS-text messages, the company is the manufacturer must modify the software ST. At present, this possibility is not all vehicles.Security features
PIN code - 4-8 digits - the identification number of the person intended to enter the network and activate your subscription. PIN2 code - provided by the operator and is used for special functions. PUK (PUK2) code - a personal unlock code, if the owner has forgotten the PIN (PIN2) code, or it incorrectly entered three times, with the help of the PUK code phone will be unlocked. Lock SIM card (access via PIN code) - if enabled, the PIN code must be entered each time the apparatus. Key lock - the ability to lock the keyboard hardware. Encoding of information - security techniques technologies GSM, designed to provide authentication, encryption, voice and data traffic. Basis kriptoarhitektury are four basic algorithms: A3, A8, A5.1/A5.2. The last two algorithms provide, respectively, "strong" and "weak" encryption. Blocking calls outgoing or incoming - eliminates work with your device a third person. Fixed set of numbers - the list of numbers given by the subscriber. Lock all the negotiations, except on the list (FDN). Useful feature, especially for dispersed subscribers. Availability of confidential numbers in memory (Closed user group - CUG) - access to these numbers is possible when you enter an additional password.Functions and services supported by the operator
Short Message Service (SMS). The service is supported by the majority of operators are usually free service. Maximum number of alphanumeric characters in one message - 160. The latest models allow you to exchange messages and longer - up to 640 characters, but this feature does not support all operators. You can find out the time and date of receipt of the communication, it is also possible to determine the number and the name of the person who sent the message. Voice messaging system (voice mail - Voice mail). The service allows you to not lose a challenge if you can not receive and automatically sends it into a personal bank voice mail. Depending on class of service, number of posts 10 - 20, the maximum length of posts 20 - 30 sec. Can automatically reply to a voice message, and forward the message. This service is available for active service, "Forward." Support for WAP. In ST there are a number of technical limitations that prevent the use of standard, well-developed Internet technology. To overcome them was a family of new standards, united by a common name - the technology WAP. WAP - Wireless Application Protocol access to information on the Internet, for devices with limited screen size, small memory and low speed network access. The key elements of technology are the WAP-browser (Internet browsing program), WAP-gateway server and WAP-content (www.wapforum.com). WAP protocol provides access from mobile phones to the WEB-pages, filed with the language of WML. The latest version of WAP - v.2.1. What opportunities will the subscriber, including cellular phones, supports WAP? First, the news service (international, national, regional). Further, the wireless office - look up subscriber business information on the server of the company, zaviziruet necessary documents, etc. Banking applications - the state accounts, pay bills, transfer money, all these operations a subscriber performs in the WAP-server of the bank. Supports SIM Application Tool Kit (STK) - Technology-based resource short message service (SMS), a component of standard GSM.Allows holders of mobile phones to make transactions in electronic commerce systems. Personal information stored on SIM-card user, is used in security systems and identification. Compared with the WAP STK is more reliable for banking services. Provides the greatest opportunity STK Class 3. Data transfer. In addition to accessing the Internet and e-mail directly from the CT, you can connect the laptop to the phone or PDA. Data exchange rate (Kbps). At present, the GSM provides exchange rate 9.6 or 14.4 Kbps. The latter value is not supported by all operators. For the majority of CT is regulated by the rate of 9.6 kbps. Sending and receiving faxes. In addition to direct data CT allows to work with fax messages. Usually used for this notebook or Pocket PC. Support for conference calls (1 +5), (MTPY). This service allows you to organize a teleconference mode - you can simultaneously connect with a group of up to 5 people, and to arrange a meeting. Two numbers on one phone (ALS). This service allows subscribers to enter into a contract with the operator, for the acquisition of two telephone numbers. One of them you can tell co-workers, other - relatives. Calls made to both numbers, and come to a PT. Determination of caller ID, called AON, (CLIP). This service is only available for digital networks. CLIR caller (CLIR). The service allows subscribers to block certain of its facilities waiting / call hold (pending and waiting for the call). This mode allows you during a conversation with the caller to call another subscriber or to answer an incoming call again, talking alternately to two subscribers. Call Forwarding. Possible types of call forwarding: all calls, all calls when the line is busy, all calls when no answer, all calls when the phone is switched off or out of radio coverage. Call Barring (Call Barring) is a package of services: a ban on all incoming and outgoing calls, a ban on outgoing international calls; ban on entering, a ban except for calls within the network. Coding of speech. Modern devices support a mode - a full-size speech coding (EFR - Enhanced Full Rate). Naturally, the quality of the reproduced speech is increased, but the trouble is that in Russia, not all operators support this mode.Memory Functions
Reference numbers and names (Phone book). Usually numbers are stored in the SIM-card. In modern CT provides additional memory directly into the unit. For example, in a model of Nokia 8850 in memory store 250 numbers and the same number on SIM-card. Memory organization in groups. In some models may be grouped numbers, for example, business partners and relatives. Find phone numbers in the phonebook the phone. Conveniently, if the search is possible both by name and by number. Remembering the past to a number (dialed / incoming / missed). The maximum length of a notebook name / number. This is important if the subscriber uses an additional code for network access another operator. Check free memory cells. Feature allows you to assess the availability of affordable recording numbers in a notebook. Ability to complete cleaning of the phone book. A useful feature for emergency situations, and for updating the phone book.Additional features
The presence of the recorder to record the current information / recording time (sec). Many models of business-class voice recorder has a function and make it possible to record a fragment of the talks or write your comment. Typically, the recording time of 50 - 100 sec. Several models allow you to set the recording quality. Naturally, the higher the quality, the smaller the interval of recording time. Opportunity to record a telephone conversation (work in voice recorder mode) / Record Time (sec). It is worth to note that not every model has a voice recorder function, allows you to save a fragment of telephone conversations. The ability to play recordings from the recorder during a conversation. Useful feature allows your companion to listen to the recording, made in advance. The possibility of transferring the recorded comments on the PC. This feature allows you to convert the recorded conversation in a form understandable to the PC, for example, sound file format (. Wav).When connecting to PT and PC, special software will provide the transmission of a file (call) in the PC memory. The built-in browser. Viewer web pages - the browser is part of the software (SW) ST. Usually this is the WAP-browser. However, there are browsers that lets you view both WAP-pages and standard HTML pages. For example, the model Benefon Q, browser MS Mobile Explorer, supports both protocols. The built-in mail client. For receiving / sending e-mail software is included in the appropriate program. Here, the manufacturer may specify the type of supported protocol - POP3 (most common), or IMAP4 - a perspective. Note that the e-mail reception is possible and based on short message service (SMS). The presence of shakes in a standard configuration. Vibrate or silent call allows in some situations, to disable call your ST. If you receive a ringing tone instead of the usual call to subscribers feel subtle vibrations ST. The presence of the organizer - usually daily, which is using the alarm function notifies you of the upcoming meeting. Ability to synchronize Address Book / Organizer with PC software (like MS Outlook) - This function is useful for those who actively use computer equipment to conduct business. A number of modern CT with organizer, for example, Benefon Q, do not allow to sync with standard software, so you have this procedure done manually. The presence of a calculator, alarm clock, games - these functions do not require comment. Indication of date and the current time - a calendar and clock undoubtedly useful. Indication of time received calls: received / missed. Ability to dial - this function is known to all holders of the modern digital phones. Can be programmed to redial the interval from one minute to tens of minutes. The same service can offer operators, but it involves additional cost. Set (activation) of the votes (the number of rooms). Speech recognition technology to automate the recruitment process. Pre-enough "to train" your phone by saying the name of the subscriber, such as Hamlet, which is written into memory. This is the name you assign a specific number. In what follows by saying a command like "set" and the name of Hamlet - the phone will automatically dial the given number. Possible number of rooms, depending on the type of CT - 5 to 20. Voice control menu (the number of teams). Similarly, a set of numbers, can be suppressed voice command, enter a specific Menu ST. If we remember that the menu system is a conventional device 4 - 5 tier, and each level of 4 - 6 points, saving time in the presence of voice control is quite significant. Creating a custom menu (User Profile). This possibility will simplify access to the functions menu, which you use most often. Function Help (HELP). Useful especially when dealing with CT for the first time, as can quickly tell the sequence of actions to perform the requested command. Audible alarm call duration. This feature allows a subscriber to program the timer, which during the conversation will be with a certain interval, for example, 30 seconds. beep. For the budget conscious users, this function is clearly worthless. Audible alarms for low battery. Standard function, usually accompanied by the appearance of the corresponding icon on the screen. Notifies the discharge at the most inopportune moment. Depending on the model and manufacturer, time to turn off is 5 - 20 minutes. Expenditure control. There may be a number of options: Counter duration of the last call and total call counter, check the value of a call and check the remaining credit (Translation of conversation for money). To recalculate the money necessary first program cost per minute of conversation in accordance with the chosen tariff plan. Adjusting the speaker volume / tone. Could be done directly with the key (button), and from the menu. Number of ringtones / number of additional signals. ... Ability to create your own ringtones. Can be programmed as a favorite tune, or enter a melody previously recorded on a computer or found on the Internet. Handsfree (Speakerphone).This feature allows you without leaving your desk to chat with a friend, or listen to a conversation in a quiet room, put the phone on the table. Ability to automatically answer the call (avtopodnyatie). This feature allows you to start a conversation without clicking on the "Reply" button. Automatic activation is useful when a call is received by the subscriber, sitting behind the wheel of a car. The built-in MP3 player. Convenient for fans of sound. Allows you to pre-load a few tunes and if you want to listen to them.Configuration items
Type of SIM card (Subscriber Identity Module). SIM card - the constructive, which is integrated circuit. In memory chips included data that define an individual code ownership ST. In the absence of SIM cards, the phone does not work. In addition, the SIM-card can be used to organize the notebook user. In today's SIM cards (such as Plug-in, miniature, embedded in the body) can store up to 250 entries (phone numbers). In vehicles, produced before, use the SIM card type Standart, performs a similar function, but has great size and inserted into the body. The built-in fax modem. The built-in so-called GSM-modem allows the use of CT for the transmit / receive data and faxes. This device differs from conventional fax modems, as it works wirelessly in the network GSM. GSM-modem allows you to work both directly with the data and combine CT with a laptop or handheld computer, to organize a mobile office for receiving / sending E-mail, faxes, and receive data from the Internet. Ability to connect to a PC through the card PC card / RS-232C. For this purpose, ST connector shall be provided, attached to a special cable with an appropriate output, such as a laptop. Typically, such a cable is not supplied with CT, but is included in the accessory kit, produced by the manufacturer. Until now, the unification of connectors and cables, by analogy with laptops in the industry CT did not happen and the search for the desired cable or order take some inconveniences. Therefore, if you intend to organize a mobile office, should I buy the cable at once. Infrared interface IrDA. Used for wireless communications ST and PC, usually a laptop or Pocket PC. Transceiver infrared provide high speed data exchange (up to 4 Mbps). However, the range of this interface is limited (up to 1 m). In addition, the IR receivers are sensitive to the direction of signal arrival - departure no more than 30?. Recall infrared radiation conditions require "line of sight." Software. It can either be included or optional. For example, the bundle model Ericsson R320s is a CD. It finds the subscriber: infrared drivers for Win95/98, a software package Ericsson Data Communication Suite for Win95/98, SMS and phone book phone software tasks the phone directly from the PC. In addition, this CD is an electronic version of the manual format. Pdf. Ibid - Demonstration and training program, illustrating the operation of the proposed software. Ability to connect the headphones / external microphone. Possibility to connect the car kit HandsFree. This feature is required if you have a habit of not disable CT while driving. Antenna type: fixed / telescopic / exchangeable. The most widespread fixed antenna. It comes in two types: interior and exterior. Reception quality in both cases does not depend on the type of antenna. For example, recent models from Nokia has an internal antenna. Telescoping antenna, used in some models, allows in some cases to optimize the output stage, improving the transmission in the area uncertain of the apparatus. Removable antenna involves the ability to connect additional antenna, whose parameters improve the functioning of ST in the area of uncertain reception. In some devices, for example, Benefon "DRAGON" Included are two antennas, the subscriber may set depending on the quality of coverage, in which it is located. Ability to connect an external antenna.If you want to use CT in uncertain reception area, to increase the stability of it is expedient to choose the model that has extra high slot. You can connect an external antenna. The authors, translation:Alexander Korsunsky