Figure 1-7. Express 4100/4110 Rear Panel - ADTRAN Express 4100 User Manual

Chapter 1. Understanding ISDN and the Express 4100/4110
The Express 4100/4110 also supports a leased digital connection allowing
data to be transferred at up to 128 kbps over a 2-wire facility using the
same RJ-49C jack. This type of service is a permanent connection between
endpoints and is sometimes referred to as a leased connection, a dedi-
cated connection, a nailed-up connection, or a private circuit. Leased con-
nection or leased line is used in this manual to represent these types of
services.

Figure 1-7. Express 4100/4110 Rear Panel

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