Dual mode mobile
Encyclopedia
Dual mode mobiles refer to mobile phones that are compatible with more than one form of data transmission or network.
which uses more than one technique for sending and receiving voice
and data
. This could be for wireless mobile phones or for wired phones.
There are three types of dual mode phones.
s for voice and data. These phones include combination of GSM and CDMAg
technology. They can be used as a GSM or CDMA phone according to your preference. These handsets are also called global phones. A good example of this kind of phones are Spice D1111 http://www.spice-mobile.com/model_fer_D1111.aspx and the Samsung
SCH-a790.Recently Lg released a handset named Fathom which is capable of dual mode but with a single sim slot.
These dual mode handsets are compatible with both GSM and CDMA networks and are essentially 2 phones in one device.
Such phones make sense in those countries that have both GSM & CDMA networks or international CDMA roamers who want to keep a single handset with 2 numbers on it.
All dual mode handsets require two identifying cards (one SIM and one RUIM) but not all dual SIM handsets are dual mode (for example dual SIM GSM phones).
(Wi-Fi
) radio or DECT
(Digital Enhanced Cordless Telecommunications) radio. These phones can be used as cellular phones when connected to a wide area cellular network. When within range of a suitable WiFi or DECT network, the phone can be used as a WiFi/DECT phone for all communications purposes. This method of operation can reduce cost (for both the network operator and the subscriber), improve indoor coverage and increase data access speeds.
technology. These phones can be used for making VoIP calls and also used for phones on the circuit switchnetwork. These phones require compatible routers and modem
to make VoIP calls.
Dual-Mode Phone
A dual-mode phone is a telephoneTelephone
The telephone , colloquially referred to as a phone, is a telecommunications device that transmits and receives sounds, usually the human voice. Telephones are a point-to-point communication system whose most basic function is to allow two people separated by large distances to talk to each other...
which uses more than one technique for sending and receiving voice
Human voice
The human voice consists of sound made by a human being using the vocal folds for talking, singing, laughing, crying, screaming, etc. Its frequency ranges from about 60 to 7000 Hz. The human voice is specifically that part of human sound production in which the vocal folds are the primary...
and data
Data (computing)
In computer science, data is information in a form suitable for use with a computer. Data is often distinguished from programs. A program is a sequence of instructions that detail a task for the computer to perform...
. This could be for wireless mobile phones or for wired phones.
There are three types of dual mode phones.
Network Compatibility
Mobile phones containing two types of cellular radioRadio
Radio is the transmission of signals through free space by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space...
s for voice and data. These phones include combination of GSM and CDMAg
technology. They can be used as a GSM or CDMA phone according to your preference. These handsets are also called global phones. A good example of this kind of phones are Spice D1111 http://www.spice-mobile.com/model_fer_D1111.aspx and the Samsung
Samsung
The Samsung Group is a South Korean multinational conglomerate corporation headquartered in Samsung Town, Seoul, South Korea...
SCH-a790.Recently Lg released a handset named Fathom which is capable of dual mode but with a single sim slot.
These dual mode handsets are compatible with both GSM and CDMA networks and are essentially 2 phones in one device.
Such phones make sense in those countries that have both GSM & CDMA networks or international CDMA roamers who want to keep a single handset with 2 numbers on it.
All dual mode handsets require two identifying cards (one SIM and one RUIM) but not all dual SIM handsets are dual mode (for example dual SIM GSM phones).
Cellular and Non-cellular Radios
Mobile phones containing both cellular and non-cellular radios used for voice and data communication. There are also 2 types of dual mode phones which use cellular radio which will contain GSM/CDMA/W-CDMA as well as other technology like IEEE 802.11IEEE 802.11
IEEE 802.11 is a set of standards for implementing wireless local area network computer communication in the 2.4, 3.6 and 5 GHz frequency bands. They are created and maintained by the IEEE LAN/MAN Standards Committee . The base version of the standard IEEE 802.11-2007 has had subsequent...
(Wi-Fi
Wi-Fi
Wi-Fi or Wifi, is a mechanism for wirelessly connecting electronic devices. A device enabled with Wi-Fi, such as a personal computer, video game console, smartphone, or digital audio player, can connect to the Internet via a wireless network access point. An access point has a range of about 20...
) radio or DECT
Digital Enhanced Cordless Telecommunications
Digital Enhanced Cordless Telecommunications , usually known by the acronym DECT, is a digital communication standard, which is primarily used for creating cordless phone systems...
(Digital Enhanced Cordless Telecommunications) radio. These phones can be used as cellular phones when connected to a wide area cellular network. When within range of a suitable WiFi or DECT network, the phone can be used as a WiFi/DECT phone for all communications purposes. This method of operation can reduce cost (for both the network operator and the subscriber), improve indoor coverage and increase data access speeds.
Wired Phones
Wired phones with VoIP and POTSPlain old telephone service
Plain old telephone service is the voice-grade telephone service that remains the basic form of residential and small business service connection to the telephone network in many parts of the world....
technology. These phones can be used for making VoIP calls and also used for phones on the circuit switchnetwork. These phones require compatible routers and modem
Modem
A modem is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. The goal is to produce a signal that can be transmitted easily and decoded to reproduce the original digital data...
to make VoIP calls.
See also
Dual mode mobiles could also refer to:- GSM & WiFiWIFIWIFI is a radio station broadcasting a brokered format. Licensed to Florence, New Jersey, USA, the station is currently operated by Florence Broadcasting Partners, LLC.This station was previously owned by Real Life Broadcasting...
phones using VoIP - Analog & Digital handsets
- Fixed & Mobile devices (FMC)
External links
- China Wireless (Market ResearchMarket researchMarket research is any organized effort to gather information about markets or customers. It is a very important component of business strategy...
) - Eurodualsim technologie