Examples of Switched Circuit Services
Requires understanding the data transmission patterns in your network. These patterns must be relatively stable (fixed monthly fee).
Integrated Services Digital Network (ISDN):
- 1. Basic Rate Interface (BRI) provides a communications circuit with two 64 Kbps (B) and
one 16 Kbps (D) digital transmission channels
- 2. Primary Rate Interface (PRI) in the U.S. 23 64 Kbps B channels plus one 64 Kbps D channel (= approx. T-1 circuit capacity). (In Europe 30 B channels + 1 D channel)
ISDN is a “global, local” service. It works well in limited areas such as parts of countries.