Packet Data Configuration - Nortel Meridian 1 Administration And Maintenance

Page 182 of 492

Packet Data Configuration

553-3011-311 Standard 7.0
Chapter 5 — ISDN BRI line and packet data implementation
Refer to Figure 24 for a diagram of packet handling flow.
D-channel packet data transmission
D-channel packet data from each DSL is multiplexed by the line card (SILC
or UILC) into two sets of four D-channels and placed onto two 64 kbps
connections for transmission to the MISP. The MISP separates the packet
data from signaling and transmits the packet data over its dedicated
connection to the PRI. A PRI B
B-channel that handles the D-channel packet data between the PRI and the
DPN-100 external packet handler.
If the system is to uniquely identify the transmitted and received D-channel
packet data for each terminal on a DSL, it must use an internal identification
number. This identification number is called Logical Terminal Identifier
(LTID) as defined in LD 27, which must be used together with the Logical
Terminal Endpoint Identifier (LTEI) number during ISDN BRI configuration
to uniquely define a logical terminal on a DSL. The LTEI is configured in
Overlay 27.
To configure a terminal for D-channel packet data service, a specific LTID is
assigned to an unused static LTEI and this information is sent to the MISP.
The LTEI number is entered at the terminal and the LTID and the PRI
B D-channel information is entered at the DPN-100 packet handler. The LTEI
is entered at the terminal (as previously configured in Overlay 27).
D-channel packet data service is determined separately for each MISP during
ISDN BRI service configuration. When this data transmission method is
selected during system configuration, you are prompted to enter the PRI loop
and channel number to specify the dedicated connection to the packet
handler. The Option 11 CPU sets up the B
informs the MISP on which connection the B
May 1999
-channel is a dedicated 64 kbps clear
D
-channel to the packet handler and
D
-channel is located.
D