IBM 3745 Service Functions page 30

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3745 Description
ON/OFF and the display of codes on the control panel. The PCC communicates
with the MOSS via the MMIO bus.
Programming Support
The control program that runs in the CCU may be:
• ACF/NCP*:
Advanced Communication Functions for Network Control Program
(ACF/NCP) (simply called the NCP in this manual) is an IBM licensed
program product.
The NCP provides major capabilities for SNA user application networks with
SOLC. However, the NCP is not limited to SOLC devices, and existing start-
stop and binary synchronous networks can be migrated to the 3745.
The NCP works with ACF/VTAM.
The NCP supports the communication network management concept when
operating with NetView* program, a network management product which
integrates: NCCF, NPOA, NOLM, VCNA, and NMPF.
• Partitioned Emulation Programming (PEP):
The PEP is the NCP and EP (Emulation Program) merged into one program
(EP is not available in stand-alone).
• Programming support for the host:
A number of IBM System Support Programs (SSPs) are available. These
SSPs are executed in the host and are used to generate the control pro-
grams and load them into the controller, dump the controller storage on the
host printer, and transfer disk files to the host.
Maintenance Philosophy
The maintenance of the 3745 is based on:
1. Error detection by hardware and software.
2. Error collection by the control program and the MOSS through BERs .
3. Error analysis, with the automatic BER analysis (autoBER), running in the
MOSS to generate a reference code.
4. Error notification to the customer through alarm and alert messages.
5. Maintenance must start with the refcodes contained in alarm(s) and alert(s),
and preferably with refcodes BXnnnyyy, if any.
6. Problem determination by the customer at the host and controller sites
allowing to call the appropriate service personnel (reference code,
hexadecimal code, or verbal/visual symptom).
7. Remote problem analysis by the service personnel in HCS, using the infor-
mation provided by the customer.
8. On-site FRU(s) replacement, repair, and verification.
Chapter 1. How to Use the MOSS Function Screens
1-21