They do not require a real time connection
It is a device which used for taking and reasoning in between two persons is called cellular telephone networks
VoIP works on telephone or cellphone connected to the internet and computer. It uses internet networks and not telephone networks.
The telephone call has been transmitted over data networks/internet.
VoIP is Voice Over Internet Protocol a telephone system that uses internet networks instead of telephone networks.
Show the formation of a T1 frame and an E1 frame used in telephone networks
how we use Public switched telephone networks to carry all our digital contents
http://wiki.answers.com/Q/How_is_the_data_and_imformation_transimited_over_public_telephone_network,public switched telephone networks and intergrated service digital networks.
0121 serves the Birmingham, England area for telephone networks.
networks
A net messaging system is a platform that allows users to send short messages to each other . This is commonly known as chatting and is available on social networks.
Telecommunication over telephone networks.
Yes, there are landline telephones that operate using a SIM card, known as GSM landline phones. These devices connect to mobile networks rather than traditional landline services, allowing users to make and receive calls through a SIM card. They are particularly useful in areas where conventional landline infrastructure is lacking or unreliable. Users can often enjoy mobile features such as SMS messaging and mobile data connectivity as well.