IBM 3745 Problem Determination Manual page 289

8
Locate the LlC to be tested and plug in the IBM 5869 Portable Keypad Display
(PKD) as described in the 3745 Connection and Integration Guide.
Various messages can be displayed on the PKD before performing the LlC line
analysis procedure (LLAP). These are described under "LlC Messages (LieS)" on
page 9-41.
If the mode is CCITT (and you checked the configuration in step 3), and the
problem persists, suspect your common carrier or the other modem.
Figure 9-3. IBM 5869 Portable Keypad Display (PKD) plugged to
a
LlC5 or
a
LlC6.
Warning: This test is disruptive for the whole link (point-to-point or ml:lltipoint) even if only one station
of a multipoint link is failing.
Notes:
1. LLAP cannot be performed on a tributary
Lies
of a multipoint lirik, or on a secondary
Lies
of a
point-to-point link.
2. If you have just installed or reconfigured the
Lie,
check the configuration with the PKD before
performing automatic problem determination.
3. The mode option must be 'NATIVE' (which is
~ountry-dependent).
9-38
IBM 3745 Communication Controller: Problem Determination Guide
o