Wednesday, July 20, 2011

Technology in Cordless Phones

A Cordless phone is a portable phone with a wireless handset that operates or communicates with the help of base station via radio waves connected to a fixed phone line. The range of the base station is usually limited and is attached to the telephone network on the subscriber premises in the same manner as corded phone is attached. The main difference between cordles phones and mobile phones is that the base station of the cordless phone is on the subscriber premises, where as, in the case of mobile phone , the base stations are maintained by commercial mobile network operator and the services are subscribed to the mobile users. Cordless telephone needs electricity for powering the base station and a cordless handset is powered by a rechargeable battery. This battery can be charged when the handset is in its cradle. Generally, cordless telephone has one base station, but additional 3 to 4 base stations can be attached for allowing a multiple voice paths that enables 3-way conference calling possible.

Cordless telephone gives freedom to walk around and talk. The main features of cordless telephone include call waiting, speaker phone, redial function, LCD, ringer volume control, conference calling, flash button, headset locator, intercom, digital answering and caller id. There are three types of cordless phones:

•Digital spread spectrum: Spread spectrum technology involves frequency hopping which switches rapidly from one frequency to the next instead of transmitting on one frequency. The spread spectrum technology combined with digital technology makes the communication spy-proof and noise-resistant. In day-to-day life, this technology is seen in cordless telephones and wireless local area networks (WLAN). The main features of this technology are long range power, good sound quality and better security. Due to high transmitter power of around 1 watt, this technology is 7 to 8 times better than the earlier versions. The signal sending using this technology uniformly spread over a wide range of frequencies for transmission and avoids interference and noise from other signals. It allows better spy-proof communication due to digital transmissions and constantly changing frequency channels in use.


•Digital: Most of the advanced digital cordless phone have a good range of about 300 meters outdoors and 50 meters indoor. The phones can be speed dialed by assigning all the commonly used telephone numbers to a button on the phone. The phonebook feature allows to store at least 10 to 255 different telephone numbers and different names can be assigned to them for easy retrieval. Advanced functions like SIM card reader and SMS messaging are found in the advanced cordless telephones. Some cordles phones are VoIP enabled and can work over the internet or with a phone line.


•Analog: Analog technology is a process in which an audio or video signal can be translated into electronic pulses. They are economical in price as compared to the other two, that is, digital spread spectrum and digital cordless phones. The sound quality is also better in analog cordless telephones. Analog phone lines support standard phones, fax machines and modems.

VoIP Phones

Technological breakthroughs and advanced telecom solutions have made business phone systems an effective communication tool for most of the companies and business enterprises. business phone system offers better performance and security because of its advanced features. With telecommunication devices getting smaller and economical and connectivity getting better, the significance of business phones has grown enormously in the past few years. These advanced phone systems have features like computer telephony integration applications, VoIP networking, voicemail with e-mail integration, intercom, private branch exchange system, web conferencing, IP telephony, customer databases, paging etc. Computer Telephony Integration has a number of common desktop and server based features like call information display, computer controlled automatic dailing in the form of preview dialing, power dialing and predictive dialing, data transfering, phone control system features like phone answering, phone hang up, phone conferencing, phone holding and call forwarding, automatic call routing, allowing users to login as call center agents for call handling, voice recording and advanced call reporting.

VoIP (voice over internet protocol) technology allows voice communication and multimedia sessions possible over internet protocol networks. IP phones, VoIP software and mobile integrated VoIP systems are three types of VoIP tools which are commonly used for communication purposes. VoIP software is a cost-effective tool that not only allows inexpensive calling, but also, makes video conferencing easy. VoIP software allows web cllaing, web conferencing and voice and video instant messaging. Mobile integrated VoIP systems can make calls and send SMS text messages with the help of WiFi or 3G internet services. VoIP phone system enables routing of phone calls directly to the telephone using high speed internet connection. VoIP is considered to be one of the best communication technologies for making long distance calls at low prices. VoIP voicemail feature allows listening to phone messages by email from anywhere in the world. The features and functions of VoIP Phones vary depending upon the price, manufacturer and usability. The standard features of these phones are:

•Call Holding: It allows putting the call on hold.

•Call return: It allows making the return call, whether or not the call was answered.

•Anonymous Call rejection: It enables rejecting the incoming calls from callers whom the user does not want speak with.

•Call Waiting: It informing the user of a new call coming when the user is busy with attending another call.

•Caller ID with name: It flashes the name and number of the caller making the call.

•Canceling call waiting: This feature allows in disabling call waiting for the next or current call.

•Redialing of last number: This feature enables to redial the last number called.

•Conferencing: It allows in making a three way call with two other callers. In this way, all the three can communicate with each-other.

•Call forwarding and call blocking: It allows to automatically redirecting the incoming calls to a different number (extension number).

•Distinctive caller ring tones: This feature allows to assign different ring tones to different callers.

•Click to call: It allows setting up the contact list for better management of inbound and outbound calls.

Better Communication

Invention of telephone is considered to be one of the greatest achievements of the modern age. The invention completely changed the way the people communicated with each other. Further, developments in the field of telecommunications led to more advanced and hi-tech communication devices and equipments. Now, telephones have become an indispensable part in the life of people, whether personal or professional. Business phone systems have become a major means of communication in most of the companies and organization. These systems play a vital role in the effective communication of businesses because of their high performance, security and more number of features than any other ordinary communication devices. Almost all the advanced phone systems have the basic features of call transferring and call holding. However, some additional features can be listed as:

•Auto attendant: This feature provides automatic answering of calls and can provide routing to the desired department, so that, the caller can be routed to the correct person as quickly as possible. Since, this feature is completely automatic, answering of incoming calls and routing the calls to the desired department can be done even if the operator has gone for lunch break or is outside the office premises.

•Conferencing: Conferencing facility allows communication with multiple people simultaneously at one time. A number of callers can be added to a single conference call by transferring the incoming calls to the specific extensions.

•Call Forwarding: Business telephone system with call forwarding feature allows forwarding of calls from one extension to another. This feature also enables the forwarding of a single call to multiple users within the office premises.

•On hold Music: Music on hold feature allows playing of music when the caller is on hold. This feature can also be customized and many companies and organizations put some informative and educational tips about their products and services for listening while the call is on hold.

•Voice Mail: This feature allows the callers to leave a message in the voice mail box that provides users with save and delete options. This feature is meant for tapping incoming calls, in case, the person has out or is unable to pick the call on time. Voice mail when used with DDI (direct dial in) numbers allows the calls to be directed straight to the extension without making the caller to wait for the operator or reception attending service.

•Battery Back Up: Battery back up allows the phone systems to operate even in power-cuts and failures for about an hour. The battery back-up depends upon the type of phone system, the more advanced and expensive phone system would have the better battery back-up power.

•Caller Identification: The telephone system with caller identification feature helps in tracking the calls from identified and un-identified phone numbers.

•Mobile Extension: This advanced feature helps the employees and staff of any company or organization to use their mobile phones as extension of these phone systems. The mobile phone can be used for transferring calls to other extension numbers and even dial to the other phone numbers, using the mobile with business phone line number.