Toshiba Phone System

Cisco IP telephone technology?

http://www.starshipcorp.com/shop_dealer/images/Cisco%20IP%20Phone%20CP-7941G.jpeg My school has Cisco IP telephones in all offices. Like the one shown above. Whats the specialty of IP telephones as compared to the usual telephone at home? Does the IP telephone operate on the local intranet/ethernet? And the voice is sent as packets? Hence how can u guarantee about quality as packets might get lost/damaged due to network congestion? Also, if a certain institution has an IP phone system that means their internal calls are free of charge right? (As they already have an ethernet network)

Public Comments

1. Yes packets might get droped. But at least its cheap!