Instruction manual

Page 1779 of 3156
Features and Services
Integrated Services Digital Network
Integrated Services Digital Network (ISDN) provides standard digital
interfaces between telephones, terminals, and telecommunication networks.
ISDN uses a common signaling protocol transmitted over a dedicated data
channel called the D-channel. The D-channel carries call setup and feature
activation information to the call destination. This allows users network-wide
access to features.
ISDN services are categorized into two types of interfaces: Primary Rate
Interface (PRI) and Basic Rate Interface (BRI).
Primary Rate Interface (PRI)
ISDN PRI provides 30B+D 23B+D channels, offering digital connectivity
between the Meridian 1 and supported interfaces.
For more information on ISDN PRI, please refer to the Meridian 1 Primary
Rate Interface NTPs.
Basic Rate Interface (BRI)
ISDN BRI is a digital connection that provides three digital channels. These
channels consist of two 64 kbps bearer channels (B-channels) and one
16 kbps signaling channel (D-channel). This 2B+D connection is known as a
Digital Subscriber Link (DSL). The DSL can be configured to provide line
access, trunk access, or packet data transmission.
For more information on ISDN BRI, please refer to the Meridian 1 Basic Rate
Interface NTPs.