Instruction manual

Features
■ N200 Counter — counts the number of times the communications system
has transmitted a message on a D-channel because no link layer
acknowledgment is received from the network
■ N201 Counter — counts the maximum number of layer 3 octets the
system can send or receive in a single D-channel message
■ K Counter — counts the number of layer 3 unacknowledged messages
sent from the communications system to the network on a D-channel
■ T303 Timer — times the delay in network response when the
communications system sends a setup message to initiate an outgoing
call
■ T305 Timer — times the delay in network response when the
communications system sends a disconnect message to clear a call
■ T308 Timer — times the delay in network response when the
communications system sends a release message to clear a call
■ T309 Timer — times the duration of a D-channel data link failure (a loss of
signaling for the entire PRI connection)
■ T310 Timer — times the network delay following the receipt of a call
proceeding message on an outgoing call
■ T313 Timer — times the delay in network response when the
communications system sends a connect message that indicates the
completion of an incoming call
■ T316 Timer — times the delay in network response when the
communications system sends a restart message to clear a B-channel
Terminal Equipment Identifier (TEI)
This option assigns the link layer address of a piece of equipment connected to
each D-channel. Normally, only one is connected, and the network assumes
that its TEI is 0.
Call Processing
Figure 28 shows the order of call processing for both incoming and outgoing
calls; the section of the figure within the box applies specifically to call
processing on a system with PRI. Descriptions of incoming and outgoing call
processing follow the figure.
Primary Rate Interface (PRI)
359