About PTT (Push-To-Talk)

About PTT (Push-To-Talk)

PTT (Push-To-Talk) is half-duplex so communication must be moved one way at any given moment as opposed to phone calls which are full-duplex and the two parties can hear one another. It is a 2-way communication service which works like a “walkie-talkie”.

A two-way communication service which works like a “walkie-talkie”.

PTT requires the individual speaking press and hold a specific button while talking and to release it when they are done as so the listener can reply by using the same method.

A

A-GPS (Assisted GPS) • A2DP (Advanced Audio Distribution Profile) • AAC (Advanced Audio Coding) • Airplane Mode • Alarm Clock • AMOLED (Active-matrix organic light-emitting diode) • Analog Technology • Android Operating System • Antenna • Aperture • APN (Access Point Name) • Apple iOS •

B

Band • Bandwidth • Battery Charging • Biometrics • Bit • BlackBerry OS • Bluetooth • Bps (Bits per Second) • Brand • Broadband • Browser • Byte

C

Camera • Capacitive Touchscreen • Car Kit • Carrier • CDMA (Code-Division Multiple Access) • Cell • Chipset • CIF (Common Intermediate Format) • Connected GPS • Corning Gorilla Glass • CPU (Central Processing Unit)

D

DC-HSDPA (Dual Carrier or Dual Cell High-Speed Downlink Packet Access) • Dual-band • Dual-Mode • Dual-SIM • Dynamic Memory

E

EDGE (Enhanced Data for Global Evolution) • EDR (Enhanced Data Rate) • EGPRS • EGSM (Extended GSM)

F

Firmware • Flash Memory • Flight mode • FM Radio • Frequency • FTP (File Transfer Protocol)

G

Galileo (Global Navigation Satellite System) • GB (Gigabyte) • Gbps (Gigabits per second) • Geo-tag • GLONASS (Global Navigation Satellite System) • GPRS • GPS (Global Positioning System • GPU (Graphics Processing Unit)

H

H.263 • H.264 • H.265 • Handwriting recognition • Hot Spot • HSCSD (High-Speed Circuit Switched Data) • HSDPA (High-Speed Downlink Packet Access) • HSDPA+ (High-Speed Downlink Packet Access Plus) • HSP (Headset Profile) • HTML (Hypertext Markup Language) • Hz (Hertz)

I

iDEN (Integrated Digital Enhanced Network) • Image Signal Processor (ISP) • IMEI (International Mobile Equipment Identity)

J

Java

K

KB (Kilobyte) • Kbps (Kilobits per second) • Key Guard

L

LCD (Liquid Crystal Display) • LED (Light-Emitting Diode) • Li-Ion (Lithium Ion) • Li-Polymer (Lithium Polymer) • Loudspeaker

M

Macro • Magnetometer • mAh • MB (Megabyte) • Mbps (Megabit per second) • Megapixel • Memory card slot • Memory effect • Messaging • MHz (Megahertz) • Micro USB • microSD • microSDHC • MIDI (Musical Instrument Digital Interface) • MIDP (Mobile Information Device Profile) • MMS (Multimedia Messaging Service) • Mobile games • Mobile High-Definition Link (MHL) • Mobile IM (Instant Messaging) • Modem • Monochrome • MP3 (MPEG Layer 3) • MPEG (Motion Picture Experts Group) • MPEG-4 video • Multitouch input method • Music playback time (battery life) • Music Player

N

NAND Memory • Network capacity • Network coverage • NOR Memory • Numeric keypad

O

OEM (Original Equipment Manufacturer) • OLED (Organic Light-Emitting Diode) • Optical Zoom • OS (Operating System) • OTA (Over-The-Air) • OTG

P

PCS (Personal Communications Service) • PDA (Personal Digital Assistant) • Pixel • Pixel density (Pixels Per Inch) • Price • PTT (Push-To-Talk) • Push

Q

Quad-band • QVGA (Quarter Video Graphics Array) • QWERTY keyboard layout

R

RAM (Random-Access Memory) • RBDS (Radio Broadcast Data System) • RDS (Radio Data System) • Resistive touchscreen • Resolution • Ringtone • Roaming • ROM (Read-Only Memory) • RS-MMC (Reduced-Size Multi Media Card)

S

Screen protection • SD (Secure Digital) • Secondary camera • Sensors • SIM • SIM lock • Single-Band • Smart Watch • Smartphone • SMS (Short Messaging Service) • Speed Dial • Stand-by time (battery life) • Stereo Speakers • Streaming Video • Stylus

T

Talk time (battery life) • Tethering • Text messaging (texting) • Touchscreen • Tri-band

U

UI (User Interface) • UMTS • UPnP (Universal Plug and Play) • USB (Universal Serial Bus) • USB On-The-Go • USIM

V

VGA (Video Graphics Array) • Video call • Voice dialing • Voice mail • VPN (Virtual Private Network)

W

WAP (Wireless Application protocol) • WCDMA(Wideband Code Division Multiple Access • Wearable Technology • Wi-Fi • Windows Mobile • Windows Phone OS • WLAN • WMV (Windows Media Video)

#

2G • 3G • 4G • 5G