ZTE Corporation ZTEF188 Benutzerhandbuch

1. 

2G - Second Generation wireless communication system. 2G system supports low 

quality voice and low-rate packet-data service. 2G refers to GSM in European countries, and 
CDMA in America. 

2. 

3G - Third Generation wireless communication system. 3G is the next generation 

wireless communication system that offers real-time video streaming services and high-rate 
packet-data service. 3G is also known as UMTS (Universal Mobile Telephony System). 

3. 

Access point - Access point refers to a point through which users can connect to the 

network so that the users can use the network services. 

4. 

MMS (Multimedia Message Service) - A message service for the handset environment, 

that allows videos, pictures, audio files and text to be sent between phones and dependent on 
network provider support, to email addresses 

5. 

Roaming - Use of your phone when you are outside your home area, when traveling for 

example. 

6. 

USIM - Universal Subscriber Identity Module. Your USIM is provided by network 

operator. It carries the authentication and service grade data for the network operator as well 
as user-specific data such as Contacts and SMS. 

7. 

Video call - A communications service that enables users to communicate with video 

instead of normal voice. Video calling is only supported by 3G network providers 

8. 

Voice/Video mail - An answering service that automatically answers your calls when 

you are not available. Others can leave either voice or video messages for you with this 
service.