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Configuring WAN Line Services
7-30
308648-14.00 Rev 00
Configuring a DS0A Connection
This section describes how to configure a T1 connection to a QMCT1 w/ DS0A
link module to carry SDLC traffic.
Gathering Required Information
You need the following information from the subscriber:
The data rate of the SDLC connection between the IBM host and the customer
premise equipment (CPE) (see Figure 7-1
).
Use this rate to set the Rate Adaption logical line parameter for both the router
connecting the host side and the router connecting the remote access side.
Valid options are 9.6 Kb/s or 19.2 Kb/s.
To establish a connection, the subscriber must match this rate to that of the
SDLC connection between the controller and CPE on the remote access side.
The line-encoding settings of both the host and CPE, and the controller and
CPE on the remote access side.
Use these settings to set the NRZI Enabled logical line parameter. Valid
options are Enable to configure NRZI (nonreturn to zero inverted) or Disable
to configure NRZ (nonreturn to zero).
The setting of the NRZI Enable parameter on a router connecting the host side
is unrelated to and can differ from that of a router connecting the remote
access side.
The NRZI type setting for:
-- The host side if the line-encoding settings of the host and CPE do not
match
-- The remote access side if the line-encoding settings of the controller and
CPE do not match
You need these settings to set the NRZI Type logical line parameter. Valid
options are Mark or Space.
Like the NRZ Enabled parameter, the NRZI Type on a router connecting a
host side is unrelated to and can differ from that connecting a remote access
side. The subscriber’s host and remote access settings can also be different.
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